The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 1994
Filed:
Feb. 11, 1993
Lewis W Fleischmann, Randallstown, MD (US);
Other;
Abstract
An automatic prime and flush siphon condensate pump system (100) is provided for displacing condensate water accumulated from an air conditioning evaporator to a drain, such as the drain of a basin (50). Initially, the pump assembly (2) displaces the condensate from the reservoir (1) responsive to the closure of a switch (34) when the condensate level exceeds a predetermined height within reservoir (1). The pump outlet (128) is coupled to the inlet of a pilot operated check valve assembly (3) which is opened responsive to the pressure in the valve chamber (28) exceeding the bias force of the compression spring (33) and a fluid pressure in a reference chamber (29). The pumped condensate exits the pilot operated check valve assembly (3) and is fluidly coupled to the ball-type check valve housing (126) for delivery of the condensate to the passage (18) for fluid coupling with the drain conduit (52). Subsequently, when the level of condensate within the reservoir (1) drops sufficiently such that switch (34 ) opens, condensate is then free to flow through the U-shaped siphon housing (122). The siphon flow is regulated by a flow regulating valve assembly (4), having a valve actuator (10) coupled to the float (5). The siphon flow from the flow regulating valve assembly (4) passes through the passage (130), the passage (13), past the ball check (14), through the check valve chamber (16), and finally through the passage (18) to the drain conduit (52).