Suction device having a cleaning valve

A suction device with a suction device housing (11), in which a suction turbine (14) for generating a suction flow (SM) is arranged, wherein the suction device housing (11) has a suction inlet (12) for admitting the suction flow (SM) and a dust collection chamber (15) for collecting dust contained in the suction flow (SM) during a suction operation of the suction device (10), wherein a filter element (25) for retaining dust in the dust collection chamber (15) is arranged between the dust collection chamber (15) and the suction turbine (14), wherein a cleaning valve (40, 140) is arranged between the filter element (25) and the suction turbine (14), wherein the cleaning valve (40, 140) has a suction flow valve (43A) with a suction flow valve body (43), which suction flow valve closes a suction flow channel (17) in a cleaning position (AR) and opens it in a suction operation position (SB), which suction flow channel extends between the suction turbine (14) and the filter element (25) and through which the suction flow (SM) is able to flow, and wherein and the cleaning valve (40, 140) has an external-air valve (63A, 73A) with an external-air valve body (63, 73), which closes an external-air channel (18) in the suction operation position (SB) and opens it in the cleaning position (AR), which external-air channel extends between the filter element (25) and an external-air inlet (19) provided for the inflow of external-air, so that an external-air flow (FLS) flowing in through the external-air inlet (19) can flow through the filter element (25) in a flow direction counter to the suction flow (SM) in order to clean the filter element, wherein the suction flow valve body (43) has at least one external-air passage channel (55), through which at least a part of the external-air flow (FLS) or the entire external-air flow (FLS) can flow in the cleaning position (AR).