Pump priming assemblies
AssigneeGenerac Power Systems, Inc.
InventorsMir Khan, Alexander Kobryn, Whitney Montondo, Nic Saeger
Life of this patent
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Abstract
An assembly for indicating and communicating a priming charge to a fluid pump to establish self-sustained operation of the fluid pump is disclosed. The priming assembly includes an enlarged inlet associated with a fluid priming chamber and an outlet that is in fluid communication with the working fluid passage associated with the pump. The priming assembly includes one or more of a cap or valve assembly associated with isolating the pump chamber from atmosphere and preferably includes indicia associated with use and/or operation of the priming assembly.
Claims14
A priming assembly for use with a portable pump assembly including a pump received within a pump housing, the pump configured to pump fluid received at an input of the pump housing to an output of the pump housing, the priming assembly comprising:
- a body having a first end operatively connectable to the output of the pump housing of the portable pump and a second end that is offset from the first end;
- a chamber defined by the body and extending between the first end and the second end of the body, the chamber defining a cross-sectional area associated with the first end of the body that is less than a cross-sectional area of the chamber associated with the second end of the body;
- and
- a discharge tube having an input communicating with the chamber and an outlet isolated from the housing;
- wherein the pump pumps fluid from the output of pump housing, through the chamber of the body and in the inlet of the discharge tube and out of the outlet of the discharge tube.
A power driven pump assembly comprising:
- a pump housing having a working fluid inlet and a working fluid outlet;
- an impeller disposed in the pump housing and configured to communicate a working fluid along a working fluid path from the working fluid inlet toward the working fluid outlet during operation of the impeller;
- a priming chamber having a priming passage inlet fluidically connected to the working fluid outlet and being configured to be in fluid communication with the working fluid path, the priming passage inlet having a larger cross section area than a priming passage outlet;
- and
- a discharge structure having an input fluidically communicating with the priming chamber and an outlet isolated from the pump housing, the working fluid allowed to flow through the discharge structure between the input and the outlet thereof.
A method of forming a power driven pump assembly, the method comprising:
- providing a pump defined by a pump housing that defines a pump chamber and that substantially encloses an impeller configured to communicate a working fluid from a working fluid inlet to a working fluid outlet during operation of the impeller;
- forming a priming charge passage that is configured to communicate a fluid priming charge to the pump chamber for priming the pump and that is defined by a priming charge inlet that has a larger cross section area than an outlet of the priming charge passage;
- and
- once the pump is primed, pumping the working fluid from the working fluid outlet, through the priming charge passage and out of a discharge outlet fluidically communicating with the priming charge passage and isolated from the pump chamber.
Dependencies are inferred from the claim text.