Fluid filter system with auto drain
AssigneeAxi International Corporation
InventorsAbel Perez De Alderete, Alexander F Goodfellow
Life of this patent
Estimating the term…
Abstract
A fluid filter system with auto-drain capabilities. The fluid filter system includes at least one filter, a vent check valve, a filter outlet check valve, an openable valve, a drain pump and a drain pump check valve. The filter includes a filter head having an inlet, an outlet and a drain outlet, a removable filter element, and a suction tube in fluid communication with the drain outlet and extending into the removable filter element. The vent check valve has an inlet exposed to atmosphere and an outlet in fluid communication with an interior volume of the filter. The filter outlet check valve has an outlet and an inlet in fluid communication with the outlet of at least one filter head.
Claims12
A fluid filter system, comprising:
- at least one filter having a filter head with an inlet, an outlet and a drain outlet, a spin-on removable filter element, and a suction tube in fluid communication with the drain outlet and extending into an Interior volume of the spin-on removable filter element, the filter head being located above the spin-on removable filter element;
- a vent check valve having an inlet exposed to atmosphere and an outlet in fluid communication with an interior volume of the filter;
- a filter outlet check valve having an inlet in fluid communication with the outlet of the at least one filter head, and an outlet;
- an openable valve in fluid communication with the drain outlet of the filter;
- a drain pump having an intake in fluid communication with the valve, and an output;
- and
- a drain pump check valve having an inlet in fluid communication with the output of the drain pump and an outlet in fluid communication with the outlet of the filter outlet check valve.
A fluid filter system, comprising:
- at least one filter having a filter head with an inlet, an outlet and a drain outlet, a removable filter element, and a suction tube in fluid communication with the drain outlet and extending into the removable filter element;
- a vent check valve having an inlet exposed to atmosphere and an outlet in fluid communication with an interior volume of the filter;
- a filter outlet check valve having an inlet in fluid communication with the outlet of at least one filter head, and an outlet;
- an openable valve in fluid communication with the drain outlet of the filter;
- a drain pump having an intake in fluid communication with the valve, and an output;
- and
- a drain pump check valve having an inlet in fluid communication with the output of the drain pump and an outlet in fluid communication with the outlet of the filter outlet check valve;
- wherein the at least one filter comprises a first filter and a second filter coupled in parallel, each filter having a filter head with an inlet, an outlet and a drain outlet, a removable filter element, and a suction tube in fluid communication with the drain outlet and extending into the removable filter element.
Dependencies are inferred from the claim text.