Abstract: A suction device has a collection container, a drive unit with a suction motor, upstream of which a filter unit is connected, and a pre-separator, which is connected upstream of the filter unit. The suction motor and the filter unit are at least partially arranged on that side of the pre-separator that faces away from the collection container and are situated next to each other. Irrespective of the position of the filter unit and the suction motor, the suction device can also be designed such that at least one deflector is arranged in the falling path of the dust/dirt particles that fall from the filter unit during the cleaning process.

Abstract: A vacuum device is used when working with a tool in masonry to vacuum dust that is produced. The device has at least one negative pressure chamber, at least one working space and a connection for a suction unit, of which the working space is delimited by a wall. In order to be able to reliably vacuum out the dust produced when working with different tools at any time using the vacuum device while having a simple design, the wall delimiting the working space has at least one wall section which can be adjusted into a position that opens the working space.

Abstract: A device for receiving a suction hose that connects a nozzle of a vacuuming device to a central unit of the vacuuming device. The device is has at least one holding device that can be arranged on the central unit of the vacuuming device, wherein the suction hose is able to be fitted in the at least one holding device such that the hose can be accommodated in a secure and stable manner. This advantageously makes it possible for the user of the vacuuming device to be able to adapt the length of the suction hose as required to the task currently to be performed. Here, the unused part of the suction hose is stored in a particularly secure and stable manner in the device or in cavities of the device that can be formed between the at least one holding device and a rear part. In a second aspect, the invention relates to a vacuuming device having a central unit that is connected to a suction hose having a nozzle.

Abstract: An automatic filter cleaning system, e.g., for cleaning a filter in a vacuum cleaner. The cleaning system has an electrical motor that drives/rotates, directly/indirectly, a piston which directly/indirectly opens a filter cleaning valve. The filter cleaning valve may open for a filter cleaning back flow air stream that thus cleans the filter. The piston is spring loaded and a piston guide ensures that the energy accumulated in the spring and piston is released during the rotation of the piston, thereby shortly opening the filter cleaning valve.

Abstract: An automatic filter cleaning system e.g for cleaning a filter in a vacuum cleaner. The cleaning system has an electrical motor that drives/rotates, directly/indirectly, a piston which directly/indirectly opens a filter cleaning valve. The filter cleaning valve may open for a filter cleaning back flow air stream that thus cleans the filter. The piston is spring loaded and a piston guide ensures that the energy accumulated in the spring and piston is released during the rotation of the piston, thereby shortly opening the filter cleaning valve.