Condensate trap for vapor extraction system
First Claim
1. A condensate trap for use in a vapor extraction system (VES) comprising:
- a vapor tight vessel, said vessel having an inlet and outlet means in fluid communication with a vapor extraction system including a vacuum pump for providing a negative pressure within said VES,a means for combining vapor molecules into droplets located within said vessel, said droplets forming a pool of liquid in a bottom portion of said vessel, anda check valve in fluid flow communication with said bottom portion of said vessel on one side and atmospheric air pressure on the other side, said valve positioned such that when said pool of liquid reaches a predetermined height in said vessel, as determined by said negative pressure therein along with atmospheric pressure, whereby said check valve will be forced open by said pool of liquid thereby draining said pool until such time as said negative pressure within the system along with atmospheric pressure closes said check valve.
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Accused Products
Abstract
A condensate trap for use in a Vapor Extraction System (VES), which uses negative pressure to extract contaminated vapors from soil, is disclosed. The trap includes a vapor tight vessel, part of which acts as a condensate reservoir. One or more mist eliminators, such as an impingement type condensate collector, are contained within the vessel. The vessel includes a vapor inlet and a vapor outlet as well as a condensate outlet. The condensate outlet is controlled by a swing check valve. The valve remains closed until there is sufficient condensate in the reservoir to push it open. After a predetermined amount of condensate drains out, the check valve closes.
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Citations
14 Claims
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1. A condensate trap for use in a vapor extraction system (VES) comprising:
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a vapor tight vessel, said vessel having an inlet and outlet means in fluid communication with a vapor extraction system including a vacuum pump for providing a negative pressure within said VES, a means for combining vapor molecules into droplets located within said vessel, said droplets forming a pool of liquid in a bottom portion of said vessel, and a check valve in fluid flow communication with said bottom portion of said vessel on one side and atmospheric air pressure on the other side, said valve positioned such that when said pool of liquid reaches a predetermined height in said vessel, as determined by said negative pressure therein along with atmospheric pressure, whereby said check valve will be forced open by said pool of liquid thereby draining said pool until such time as said negative pressure within the system along with atmospheric pressure closes said check valve. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A condensate trap, for removing and collecting moisture, in a vacuum extraction system, comprising:
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a vapor tight vessel, said vessel having a condensate reservoir, an air/vapor inlet and outlet to a vacuum extraction system including a vacuum means for placing said vessel under a negative pressure, each in fluid communication with said vessel, a check valve, said check valve being in fluid communication with said reservoir, whereby said check valve opens when said condensate reaches a predetermined level in said condensate reservoir, and closes when a predetermined amount of condensate has drained therefrom. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification