公开(公告)号：US20210212540A1

公开(公告)日：2021-07-15

申请号：US16762423

申请日：2018-11-19

Applicant: Hilti Aktiengesellschaft

Inventor： Xaver HANSLMEIER ,  Svenja MÜLLER

IPC: A47L9/20 ,  A47L9/19 ,  B01D46/00 ,  A47L9/28 ,  B01D46/46 ,  B01D46/44

Abstract: A method for operating a vacuum cleaning appliance, having a filter element, a filter element cleaning device, a control device, a turbine, a first pressure sensor and a second pressure sensor. The method includes operating the vacuum cleaning appliance to suck in the air stream through the filter element; determining a first pressure reference value; measuring the pressure difference between the first and second pressure values; dedusting the filter element with the aid of the filter element cleaning device if the value of the pressure difference between the first and second pressure values reaches a first threshold value; determining a second pressure reference value after the end of the dedusting of the filter element; determining a difference value between the second and first pressure reference values; and dedusting the filter element if the difference value between the second and first pressure reference values reaches a second threshold value, or switching off the vacuum cleaning appliance if the difference value between the second and first pressure reference values reaches a third threshold value. A vacuum cleaning appliance for carrying out the method.

公开(公告)号：US20240389806A1

公开(公告)日：2024-11-28

申请号：US18790073

申请日：2024-07-31

Applicant: Hilti Aktiengesellschaft

Inventor： Xaver HANSLMEIER ,  Svenja MÜLLER ,  Mihael GENC ,  Wolfgang RICHTER ,  Stefan HESS

IPC: A47L7/00 ,  A47L9/12 ,  A47L9/24

Abstract: A wet and dry vacuum cleaner having a vacuum cleaner head, having a dirt container and having an inlet fitting which is designed for the connection of a suction hose, wherein the inlet fitting is connected in terms of flow to an inlet connector, which is situated in the wet and dry vacuum cleaner, of the wet and dry vacuum cleaner such that dirt particles that are drawn in can pass via the inlet connector into the dirt container, wherein the inlet connector is designed as a diffuser with horizontal outflow. Furthermore, the inlet connector of the wet and dry vacuum cleaner may have a Y shape in the sense that the inlet connector comprises one inflow opening for the suction flow and two outlet openings.

公开(公告)号：US20220183523A1

公开(公告)日：2022-06-16

申请号：US17442851

申请日：2020-04-09

Applicant: Hilti Aktiengesellschaft

Inventor： Xaver HANSLMEIER ,  Svenja MÜLLER ,  Rainer STAHL ,  Dominik WENNING

IPC: A47L9/19 ,  A47L9/28 ,  A47L9/20

Abstract: A method for controlling a clearing process in a vacuum cleaning device, wherein the vacuum cleaning device comprises at least one filter, which is cleared regularly. The method proposed allows, in particular, differential-pressure-dependent filter clearing in accordance with requirements, during which filter aging and/or filter wear can also be taken into account. In a second aspect, the invention relates to a vacuum cleaning device by means of which the proposed control method can be carried out. For this purpose, the vacuum cleaning device can comprise, in particular, a filter clearing unit.

公开(公告)号：US20210113042A1

公开(公告)日：2021-04-22

申请号：US16970393

申请日：2019-03-21

Applicant: Hilti Aktiengesellschaft

Inventor： Xaver HANSLMEIER ,  Svenja MÜLLER ,  Mihael GENC ,  Wolfgang RICHTER ,  Stefan HESS

IPC: A47L9/24 ,  A47L7/00

Abstract: A wet and dry vacuum cleaner having a vacuum cleaner head, having a dirt container and having an inlet fitting which is designed for the connection of a suction hose, wherein the inlet fitting is connected in terms of flow to an inlet connector, which is situated in the wet and dry vacuum cleaner, of the wet and dry vacuum cleaner such that dirt particles that are drawn in can pass via the inlet connector into the dirt container, wherein the inlet connector is designed as a diffuser with horizontal outflow. Furthermore, the inlet connector of the wet and dry vacuum cleaner may have a Y shape in the sense that the inlet connector comprises one inflow opening for the suction flow and two outlet openings.

公开(公告)号：US20230157498A1

公开(公告)日：2023-05-25

申请号：US17919192

申请日：2021-04-29

Applicant: Hilti Aktiengesellschaft

Inventor： Xaver HANSLMEIER ,  Anna Mahr ,  Svenja MÜLLER

IPC: A47L9/14

CPC classification number: A47L9/1418

Abstract: A disposal bag for a vacuuming device, wherein the disposal bag has a pressure equalization matrix. The pressure equalization matrix has openings that are designed to effect pressure equalization between a first region and a second region of a collecting tank of the vacuuming device. The vacuuming device can preferably be a construction site vacuum cleaner, wherein the collecting tank of the vacuuming device is designed to receive the disposal bag and the dust sucked in by the vacuuming device is collected and contained in the disposal bag. A method for producing a disposal bag, and to the use thereof in a vacuuming device is also provided.

公开(公告)号：US20220175203A1

公开(公告)日：2022-06-09

申请号：US17441546

申请日：2020-03-25

Applicant: Hilti Aktiengesellschaft

Inventor： Lionel BARBIER ,  Svenja MÜLLER ,  Sonya WÖRZ ,  Georg HOLZMEIER ,  Anna MAHR

IPC: A47L7/00

Abstract: An arrangement of components in a portable wet vacuum cleaner, wherein the wet vacuum cleaner includes a container for collecting a liquid-dirt mixture. The component arrangement is characterized, in particular, by a sloping sealing plane as the upper termination of a collecting container of the wet vacuum cleaner, wherein the sloping sealing plane includes a filter unit. In a second aspect, the invention furthermore relates to a wet vacuum cleaner having a component arrangement of this kind.

公开(公告)号：US20210106193A1

公开(公告)日：2021-04-15

申请号：US16970386

申请日：2019-03-21

Applicant: Hilti Aktiengesellschaft

Inventor： Xaver HANSLMEIER ,  Svenja MÜLLER

IPC: A47L7/00 ,  A47L9/24 ,  A47L9/12

Abstract: A wet and dry vacuum cleaner having a vacuum cleaner head, having a dirt container and having an inlet fitting which is designed for the connection of a suction hose, wherein the inlet fitting is connected in terms of flow to an inlet connector, which is situated in the wet and dry vacuum cleaner, of the wet and dry vacuum cleaner such that dirt particles that are drawn in can pass via the inlet connector into the dirt container, wherein the inlet connector is designed as a diffuser with horizontal outflow.