Vapor recovery system for mobile fuelers
OwnerBob J. Hillinventor
Life of this patent
Estimating the term…
Abstract
A system for recovering fuel vapor during delivery of fuel by a mobile fueler includes a storage tank covered with a layer of insulation, a supply pump connected to the storage tank for delivering fuel therefrom, and a fuel dispensing assembly, preferably a coaxial hose and nozzle, including a supply outlet for delivering fuel to a vehicle being fueled, and a vapor recovery inlet proximate the supply outlet. A diverter valve diverts a portion of the fuel in the supply line, and a vacuum jet pump is connected to the storage tank and, by a vapor line, to the vapor recovery inlet, which is driven by the diverted fuel to create a vacuum in the vapor line to draw vapor into the vapor recovery inlet, through the vapor line, and into the storage tank.
Claims19
A vapor recovery system for a mobile fueler during a fuel operation, comprising:
- a. a vacuum jet pump comprising:
- i. a vapor recovery inlet and a liquid fuel inlet, a surge cavity, a ullage pressure channel, a mixing channel, a housing collar, an upper central cylindrical conduit, an aerator, a converging jet orifice, and a lower cylindrical conduit,
- ii. a diaphragm assembly having a collar securing a control rod in the center of a diaphragm gasket and a spring,
- iii. an upper housing cap having an ullage pressure port and being operable to secure said diaphragm assembly against said housing body to provide a fluid-tight seal, the diaphragm gasket defining an upper diaphragm cavity and a lower diaphragm cavity,
- iv. a vapor channel connecting said surge chamber to said lower diaphragm cavity;
- and
- b. a mobile fueler having a storage tank in communication with a supply pump that is operable to deliver fuel through a supply line to a fuel dispensing assembly having a vapor recovery inlet.
A vapor recovery system for a mobile fueler during a fuel operation, comprising:
- a. a vacuum jet pump including
- i. a housing body, having a vapor recovery inlet and a liquid fuel inlet, a surge cavity, an ullage pressure channel, a mixing channel, a housing collar, an upper central cylindrical conduit, and a lower cylindrical conduit;
- ii. a diaphragm assembly having a collar securing a control rod in the center of a diaphragm gasket and a spring;
- iii. an upper housing cap having an ullage pressure port and being operable to secure said diaphragm assembly against said housing body to provide a fluid-tight seal, the diaphragm assembly gasket defining an upper diaphragm cavity and a lower diaphragm cavity;
- and
- iv. an aerator having a central shaft conduit having a central shaft and a converging nozzle conduit operable to be sealed by said control rod, wherein said aerator and converging nozzle are secured in said lower cylindrical housing conduit.
A vapor recovery system for a mobile fueler during a fuel operation, comprising:
- a. a vacuum jet pump including
- i. a vapor recovery inlet and a liquid fuel inlet, a surge cavity, an ullage pressure channel, a mixing channel, a housing collar, an upper central cylindrical conduit, and a lower cylindrical conduit;
- ii. a diaphragm assembly having a collar securing a control rod in the center of a diaphragm gasket and a spring;
- and
- iii. an aerator having a central shaft conduit having a central shaft and a converging nozzle conduit operable to be sealed by said control rod, wherein said aerator and converging nozzle secured in said lower cylindrical housing conduit,
- wherein said aerator is operable to uniform a flow of liquid before interacting with the converging nozzle conduit.
Dependencies are inferred from the claim text.