Patent US4998412A successfully refreshed from Google Patents.
US4998412A
Expired / Lapsed
US
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Blockage alert and purge system
Assignee: Individual
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Filing: 1990-01-22
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Granted: 1991-03-12
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Expires: 2010-01-22
Abstract
Abstract A sediment alert and purging unit for a condensate drain pan and removal return line of a refrigeration system includes an element for monitoring the level of condensate within the condensate drain pan and removal line of a refrigeration system. The unit further includes a switch element in electrical communication with the monitoring element for disabling at least a compressor and air handler of the refrigeration system responsive to an unacceptable level of condensate within the drain pan and removal line. The inventive unit yet further includes an annunciation element in electrical communication with the switch element to alert a user when a disabling of the compressor and air handler has occurred. The unit also includes a purge port within the condensate removal line and a first condensate line closure valve disposed upstream of the purge port. Further provided is a second condensate line closure valve disposed downstream of the purge port. Through the location of closure valves both upstream and downstream of the purge port, a clogged condensate line may be purged, either upstream or downstream of the purge port by effecting the closure of that closure valve located at that side of the purge valve opposite to where the condensate blockage is believed to exist.
Inventors
- 👤 Joel Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:06
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/22; F25; F25D; F25D21/00; F25D21/14; F25D2321/00; F25D2321/14; F25D2321/146
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
167 words
A sediment and alert purging unit for a condensate removal line of a refrigeration system, the alert purging unit comprising: (a) means for monitoring the level of condensate within the condensate removal pan or line refrigeration system; (b) switch means in electrical communication with said monitoring means, for disabling at least a compressor or air handler of said refrigeration system responsive to an unacceptable level of condensate in said removal line; (c) annunciation means in electrical communication with said switch means, to alert a user when a disabling of said compressor has occurred; (d) a purge port disposed within said condensate removal line downstream of said monitoring means; (e) a first condensate line closure valve disposed upstream of said purge port; and (f) a second condensate line closure valve diposed downstream of said purge port, whereby pressurized fluid may be introduced within said purge port while a selectable one of said closure valves is closed to permit the purging of the condensate line of any blockage therein.
Claim 2
Dependent Claim
167 words
A sediment and alert purging unit for a condensate removal line of a refrigeration system, the alert purging unit comprising: (a) means for monitoring the level of condensate within the condensate removal pan or line refrigeration system; (b) switch means in electrical communication with said monitoring means, for disabling at least a compressor or air handler of said refrigeration system responsive to an unacceptable level of condensate in said removal line; (c) annunciation means in electrical communication with said switch means, to alert a user when a disabling of said compressor has occurred; (d) a purge port disposed within said condensate removal line downstream of said monitoring means; (e) a first condensate line closure valve disposed upstream of said purge port; and (f) a second condensate line closure valve diposed downstream of said purge port, whereby pressurized fluid may be introduced within said purge port while a selectable one of said closure valves is closed to permit the purging of the condensate line of any blockage therein.
Claim 3
Dependent Claim
18 words
The system as recited in claim 1 in which said purge port further comprises a pressure relief means.
Claim 4
Dependent Claim
24 words
The system as recited in claim 1 further comprising a fluid pump disposed within the condensate removal line upstream of said first closure valve.
Claim 5
Dependent Claim
17 words
The system as recited in claim 1 in which said refrigeration system comprises an air conditioning system.
Claim 6
Dependent Claim
177 words
The sediment alert and purging unit for a condensate removal line of a refrigeration system, the alert and purging unit comprising; (a) means for monitoring the level of condensate within the condensate removal pan or line of a refrigeration system; (b) switch means in electrical communication with said monitoring means, for disabling at least compressor of said refrigeration system responsive to an unacceptable level of condensate within said removal line; (c) annunciation means in electrical communication with said switch means to alert the user of the system when a disabling of the compressor or air handler has occurred; (d) a condensate line closure valve within said condensate line downstream of said monitoring means; (e) a first purge port within said condensate line and upstream of said closure valve; and (f) a second purge port disposed within said condensate line and downstream of said closure valve, whereby blockages within said condensate line may be cleared through the introduction of pressurized fluid in a selectable one of said purge ports dependent upon the location of the condensate line blockage.
Claim 7
Dependent Claim
177 words
The sediment alert and purging unit for a condensate removal line of a refrigeration system, the alert and purging unit comprising; (a) means for monitoring the level of condensate within the condensate removal pan or line of a refrigeration system; (b) switch means in electrical communication with said monitoring means, for disabling at least compressor of said refrigeration system responsive to an unacceptable level of condensate within said removal line; (c) annunciation means in electrical communication with said switch means to alert the user of the system when a disabling of the compressor or air handler has occurred; (d) a condensate line closure valve within said condensate line downstream of said monitoring means; (e) a first purge port within said condensate line and upstream of said closure valve; and (f) a second purge port disposed within said condensate line and downstream of said closure valve, whereby blockages within said condensate line may be cleared through the introduction of pressurized fluid in a selectable one of said purge ports dependent upon the location of the condensate line blockage.
Claim 8
Dependent Claim
25 words
The system as recited in claim 5 in which said closure valve is in electrical communication with said monitoring means and is actuated responsive thereto.
Claim 9
Dependent Claim
21 words
The system as recited in claim 5 in which at least one of said purge ports further comprise pressure relief means.
Claim 10
Dependent Claim
17 words
The system as recited in claim 5 in which said refrigeration system comprises an air conditioning system.
Claim 11
Dependent Claim
18 words
The system as recited in claim 5 further comprising a fluid pump disposed upstream of said purge port.
Claim 12
Dependent Claim
33 words
The system as recited in claim 6, further comprising: pump means having an input in fluid communication with said first purge port and having an output in fluid communication of said second port.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-11 | 1994-09-10 | 1995-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-11 | 1998-09-10 | 1999-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-11 | 2002-09-10 | 2003-03-12 | $7700.00 | Window Closed / Lapsed |