Device for spraying an enclosure triggered by inclination of a rotatable lid

Device for automatically spraying an enclosure closable by a rotatable lid,

• wherein the device is attachable to the lid and wherein the device comprises
• a spraying mechanism suitable for repeatedly spraying individual doses of a cleaning liquid into the interior volume of the enclosure;
• an electronic control system which includes a tilt sensor;
• wherein the control system is configured to detect the orientation of the device and wherein the control system is programmed to perform the following steps, when the device is attached to the lid of an enclosure:
• a) detecting whether the orientation is such that the tilt angle TA remains at a constant value A1 between a first pair of setpoint angles SA1 and SA2 for at least a preset period of time T1;
• b) in case the condition of step a is detected:
• starting actuation of the spraying mechanism so as to prime said mechanism, or
• starting actuation of the spraying mechanism so as to spray an individual dose of cleaning liquid into the interior volume of the enclosure, or
• starting actuation of the spraying mechanism so as to combine said priming and said spraying;
• wherein the actuation of the spraying mechanism is interrupted if the tilt angle TA changes to a value outside a first maximum deviation range MDR1;
• c) after the device has been primed or actuated, detecting whether the orientation changes such that the tilt angle TA changes to a second constant value A2 between a second pair of setpoint angles SA3 and SA4 and thereupon remains constant for a preset period of time T2;
• d) in case the condition of step c is detected progressing to step e;
• e) detecting whether the orientation is such that the tilt angle TA remains at a constant angle A3 between a third pair of angles SA5 and SA6 for at least a preset period of time T3, wherein SA5 equals the value of the angle A1 minus a lower tolerance angle LTA and SA6 equals the value of the angle A1 plus an upper tolerance angle UTA;
• f) in case the condition of step e is detected, starting actuation of the spraying mechanism so as to spray an individual dose of cleaning liquid into the interior volume of the enclosure wherein the actuation of the spraying mechanism is interrupted if the tilt angle TA changes to a value outside a second maximum deviation range MDR2;
• g) optionally repeating steps c to f;
• wherein the tilt angle TA is the angle between a local reference direction fixed in the local reference frame of the device and an external reference direction fixed in the reference frame of the enclosure, such that upon attaching the spraying device to the lid, both the local and the external reference direction lie in the plane of rotation of the lid