US 11,305,609 B2Granted

Fresh air filter regeneration for an HVAC system in a work vehicle

AssigneeCNH Industrial America LLC

InventorsDoriano Ferri, Joaquim Guitart Corominas

Life of this patent

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Abstract

An HVAC system for use with an operator cab of a work vehicle is characterized by an air duct arrangement in communication with a first fan outlet and second fan outlet. At least one air flow diverter is positioned within the air duct arrangement for selectively diverting air flowing through the air duct arrangement. During a “fresh air filter regeneration” mode the at least one air flow diverter closes the air duct arrangement, the first fan is activated, and the second fan is deactivated, whereby discharge air from the first fan flows through the second fan in a reverse direction and flows through the fresh air filter.

Claims13

Dependent claims

A heating ventilating and air conditioning (HVAC) system for an operator cab of a work vehicle, the HVAC system including:

a first fan having an inlet and an outlet, the first fan inlet being in communication with an interior of the operator cab;
a second fan having an inlet and an outlet, the second fan inlet being in communication with an exterior ambient environment;
a fresh air filter positioned in communication with the inlet of the second fan;
an air duct arrangement in communication with the first fan outlet and the second fan outlet;
and
at least one air flow diverter positioned within the air duct arrangement for selectively, diverting air flowing through the air duct arrangement;
and
wherein in a “fresh air filter regeneration” mode the at least one air flow diverter closes the air duct arrangement, the first fan is activated, and the second fan is deactivated, whereby air discharged by the first fan is diverted to the second fan for flow through the second fan in a direction from the second fan outlet to the second fan inlet before flowing through the fresh air filter.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/612,731Filed 10 May 2018
Priority: IT 10201700005139611 May 2017
Published: US 2020/0164723 A128 May 2020
Granted: 19 Apr 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

B60H 1/00378
Air-conditioning arrangements specially adapted for particular vehicles: for tractor or load vehicle cabins
B01D 46/44
Auxiliary equipment or operation thereof: controlling filtration
B01D 46/71
By acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter: with pressurised gas, e.g. pulsed air
B60H 1/00735
Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices: control systems or circuits…

Family

US 2020/0164723 A1Pre-grant publication · published 28 May 2020
US 11,305,609 B2This patent

From the US filing history. Foreign family members aren’t listed.

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