Pressurized diaphragm pump and directional flow controller therefor
OwnerBenton H. Grantinventor
Life of this patent
Estimating the term…
Abstract
A diaphragm pump is provided comprising a pump chamber, a diaphragm, an enclosure, a diaphragm reciprocator, and an enclosure pressure regulator. A valve which may be used with the diaphragm pump is also provided. The valve comprises a chamber, a chamber pressure regulator, and a timer motor for rotating a rotor to control fluid communication between the chamber and a fluid outlet.
Claims20
A fluid pump comprising:
- a pump chamber open to at least one side;
- at least one diaphragms sealing the open side of said pump chamber and, with ambient pressure on inner and outer sides of said diaphragm, defining a pump chamber resting volume,
- an enclosure for receiving and containing at least said diaphragm, said enclosure defining an enclosed volume and including a fluid outlet;
- means for reciprocating said diaphragm to alternately enlarge and diminish a pump chamber operating volume to pump fluid, the pump chamber operating volume defined with ambient pressures within said enclosure on the outer side of said diaphragm and with an average pressure on the inner side of said diaphragm due to reciprocation of said diaphragm and a back pressure;
- and
- means for regulating a pressure within said enclosure at a sufficiently high level above ambient pressure to reduce the pump chamber operating volume.
A fluid pump comprising:
- a pump chamber including at least one elastomeric diaphragm;
- an enclosure for receiving said sealingly containing at least a portion of said pump chamber and said diaphragm, said enclosure defining an enclosed volume and including a fluid conduit;
- and
- means for reciprocating said diaphragm to pump fluid between said pump chamber and said enclosed volume to regulate a pressure within said enclosure at a level other than ambient pressure.
In a fluid pump of the type having a pump chamber including at least one elastomeric diaphragm, an arm member with first and second ends, the arm member secured to the elastomeric diaphragm, means for pivotally supporting the first end of the arm member, means for reciprocating the second end of the arm member to reciprocate the elastomeric diaphragm and pump fluid, and an enclosure for receiving and containing the pump chamber, the arm member, the supporting and reciprocating means, the improvement comprising:
- said enclosure being at least substantially sealed around said pump chamber, and including at lest one fluid outlet;
- and
- said pump chamber adapted to discharge pressurized fluid into said substantially sealed enclosure upon reciprocation of said arm member to regulate pressure within said enclosure at a sufficiently high level to reduce ballooning of the elastomeric diaphragm, whereby an overall size of said enclosure may be reduced.
Dependencies are inferred from the claim text.