Patent ID: 11904659
Assignee: DOMETIC SWEDEN AB
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 7:
8. A method for ventilating a mobile accommodation vehicle, comprising:
a first free flow opening capable of enabling free air flow between an inside and an outside of said mobile accommodation vehicle, a second free flow opening also capable of enabling free air flow between the inside and the outside of said mobile accommodation vehicle, said second free flow opening located in or at a floor of said mobile accommodation vehicle and spaced vertically apart from said first free flow opening, such that said first free flow opening is arranged higher than said second free flow opening in said mobile accommodation vehicle,
wherein said first free flow opening or said second free flow opening comprises a heat recovery ventilator, said heat recovery ventilator having a first fan providing an inbound air flow and a second fan providing an outbound air flow, and wherein said heat recovery ventilator comprises a heat exchanger which exchanges heat between the inbound air flow and the outbound air flow moving therethrough, wherein said heat recovery ventilator allows said free air flow there through into and out of said mobile accommodation vehicle including when said heat recovery ventilator is not operating,
the second free flow opening or a third free flow opening which allows air flow if passage through said heat recovery ventilator is blocked or at least reduced when said heat recovery ventilator is not in operation, said third free flow opening spaced vertically apart from said first free flow opening or said second free flow opening;
wherein said heat recovery ventilator is controlled to reduce the free air flow through at least one of said first free flow opening, said second free flow opening, or said third free flow opening, and
wherein said method comprises the steps of:
directly or indirectly obtaining measurements regarding the air flow in and/or out of said first free flow opening, said second free flow opening, said third free flow opening and/or said heat recovery ventilator, and
controlling said outbound air flow out through said heat recovery ventilator and/or said inbound air flow in through said heat recovery ventilator based on said measurements.