Abstract: A cartridge for an aerosol-generating system is provided, including a liquid storage portion including a housing containing a liquid aerosol-forming substrate, the housing having an open end; and a heater assembly including: an electrical heating element configured to heat the substrate to form an aerosol, the heating element including a planar filament arrangement having one or more electrically conductive filaments, an electrically insulating substrate having a planar attachment face, the filament arrangement disposed on the planar attachment face, and clamping elements mechanically fixing the filament arrangement to the electrically insulating substrate and applying a pulling force onto the filament arrangement, at least a portion of the heater assembly being fluid-permeable, and the heater assembly being arranged over the open end of the housing.

Abstract: A fluid permeable heater assembly for an aerosol-generating system includes a cap and a substantially flat electrically conductive and fluid permeable heating element. The cap includes a hollow body with a first cap opening and a second cap opening. The first cap opening is opposite to the second cap opening. The heating element is configured to vaporise aerosol-forming substrate. The heating element is mounted on the cap, such that the heating element extends across the first cap opening. A cartridge for an aerosol-generating system includes the heater assembly, a liquid storage portion, a mouth piece, and a retainer.

Abstract: A cartridge for an aerosol-generating system is provided, the cartridge including: a liquid storage portion including a housing to contain a liquid aerosol-forming substrate; and a heater assembly including an electrically insulating element having an opening, an electrical heating element supported by the insulating element and to heat the substrate to form an aerosol, first and second electrically conductive contact portions disposed at opposite sides of the opening and to contact with a battery to supply power to the heater assembly, and a capillary material including a ceramic or a ceramic-based material and having first and second faces, the first face being in physical contact with the heating element and the second face being opposite the first face, the capillary material to convey the substrate to the heating element by capillary action, the heater assembly being fixed to the housing of the liquid storage portion.

Abstract: A cartridge for an aerosol-generating system is provided, the cartridge including: a liquid storage portion including a housing to contain a liquid aerosol-forming substrate; and a heater assembly including an electrically insulating element having an opening, an electrical heating element supported by the insulating element and to heat the substrate to form an aerosol, first and second electrically conductive contact portions disposed at opposite sides of the opening and to contact with a battery to supply power to the heater assembly, and a capillary material including a ceramic or a ceramic-based material and having first and second faces, the first face being in physical contact with the heating element and the second face being opposite the first face, the capillary material to convey the substrate to the heating element by capillary action, the heater assembly being fixed to the housing of the liquid storage portion.

Abstract: A multistage centrifugal pump for conveying a fluid includes a pump housing with an inlet to receive the fluid and an outlet to discharge the fluid, a first stage impeller and a last stage impeller to convey the fluid from the inlet to the outlet, a shaft to rotate the first stage impeller and the last stage impeller about an axial direction, a suction chamber arranged upstream of the first stage impeller and in fluid communication with the inlet, a recirculation path for the fluid including a return opening and extending from the return opening to the suction chamber, the return opening located at or in the flow path downstream of the first stage impeller and upstream of the last stage impeller, and a flow control rod disposed in the recirculation path, the flow control rod to adjust a recirculation flow through the recirculation path into the suction chamber.

Abstract: A cartridge for an aerosol-generating system is provided, including a liquid storage portion including a housing containing a liquid aerosol-forming substrate, the housing having an open end; and a heater assembly including: an electrical heating element configured to heat the substrate to form an aerosol, the heating element including a planar filament arrangement having one or more electrically conductive filaments, an electrically insulating substrate having a planar attachment face, the filament arrangement disposed on the planar attachment face, and connectors arranged at opposite ends of the heating element and forming two separate electrical contacts configured to apply power to the filament arrangement, at least a portion of the heater assembly is fluid-permeable, and the heater assembly is arranged over the open end of the housing.

Abstract: A cartridge for an aerosol-generating system is provided, including a liquid storage portion including a housing containing a liquid aerosol-forming substrate, the housing having an open end; and a heater assembly including: an electrical heating element configured to heat the substrate to form an aerosol, the heating element including a planar filament arrangement having one or more electrically conductive filaments, an electrically insulating substrate having a planar attachment face, the filament arrangement disposed on the planar attachment face, and clamping elements mechanically fixing the filament arrangement to the electrically insulating substrate and applying a pulling force onto the filament arrangement, at least a portion of the heater assembly being fluid-permeable, and the heater assembly being arranged over the open end of the housing.

Abstract: A multistage centrifugal pump for conveying a fluid includes a pump housing with an inlet to receive the fluid and an outlet to discharge the fluid, a first stage impeller and a last stage impeller to convey the fluid from the inlet to the outlet, a shaft to rotate the first stage impeller and the last stage impeller about an axial direction, a suction chamber arranged upstream of the first stage impeller and in fluid communication with the inlet, a recirculation path for the fluid including a return opening and extending from the return opening to the suction chamber, the return opening located at or in the flow path downstream of the first stage impeller and upstream of the last stage impeller, and a flow control rod disposed in the recirculation path, the flow control rod to adjust a recirculation flow through the recirculation path into the suction chamber.

Abstract: A cartridge for an aerosol-generating system is provided, the cartridge including: a liquid storage portion including a housing with a first opening, to contain a liquid aerosol-forming substrate; and a heater assembly including an electrically insulating support having a second opening, an electrical heating element supported by the insulating support and to heat the substrate to form an aerosol, and first and second electrically conductive contact portions disposed at opposite sides of the second opening and to connect to electrical connectors of a battery to supply power to the heater assembly, and a capillary material having first and second faces, the first face being in physical contact with the heating element and the second face being opposite the first face, the capillary material to convey the substrate to the heating element by capillary action, the heater assembly being connected to the housing of the liquid storage portion.

Abstract: A method for manufacturing a fluid permeable heater assembly includes providing a heating element, and over-molding a cap on edge areas of one side of the heating element. The cap includes a hollow body having a first cap opening and a second cap opening. The first cap opening is opposite to the second cap opening, and the heating element is mounted on the cap such that the heating element extends across the first cap opening.

Abstract: A cartridge for an aerosol-generating system is provided, the cartridge including: a liquid storage portion including a housing with a first opening, to contain a liquid aerosol-forming substrate; and a heater assembly including an electrically insulating support having a second opening, an electrical heating element supported by the insulating support and to heat the substrate to form an aerosol, and first and second electrically conductive contact portions disposed at opposite sides of the second opening and to connect to electrical connectors of a battery to supply power to the heater assembly, and a capillary material having first and second faces, the first face being in physical contact with the heating element and the second face being opposite the first face, the capillary material to convey the substrate to the heating element by capillary action, the heater assembly being connected to the housing of the liquid storage portion.

Abstract: A cartridge for an aerosol-generating system is provided, the cartridge including: a liquid storage portion including a housing with a first opening, to contain a liquid aerosol-forming substrate; and a heater assembly including an electrically insulating support having a second opening, an electrical heating element supported by the insulating support and to heat the substrate to form an aerosol, and first and second electrically conductive contact portions disposed at opposite sides of the second opening and to connect to electrical connectors of a battery to supply power to the heater assembly, and a capillary material having first and second faces, the first face being in physical contact with the heating element and the second face being opposite the first face, the capillary material to convey the substrate to the heating element by capillary action, the heater assembly being connected to the housing of the liquid storage portion.

Abstract: A cartridge for an aerosol-generating system is provided, including a liquid storage portion including a housing containing a liquid aerosol-forming substrate, the housing having an open end; and a heater assembly including: an electrical heating element configured to heat the substrate to form an aerosol, the heating element including a planar filament arrangement having one or more electrically conductive filaments, an electrically insulating substrate having a planar attachment face, the filament arrangement disposed on the planar attachment face, and connectors arranged at opposite ends of the heating element and forming two separate electrical contacts configured to apply power to the filament arrangement, at least a portion of the heater assembly is fluid-permeable, and the heater assembly is arranged over the open end of the housing.

Abstract: A fluid permeable heater assembly for an aerosol-generating system includes a cap and a substantially flat electrically conductive and fluid permeable heating element. The cap includes a hollow body with a first cap opening and a second cap opening. The first cap opening is opposite to the second cap opening. The heating element is configured to vaporise aerosol-forming substrate. The heating element is mounted on the cap, such that the heating element extends across the first cap opening. A cartridge for an aerosol-generating system includes the heater assembly, a liquid storage portion, a mouth piece, and a retainer.

Abstract: A centrifugal pump for conveying a fluid includes a pump housing, an impeller to convey the fluid from an inlet to an outlet, a shaft to rotate the impeller, a first sealing device to seal the shaft at a suction side, a second sealing device to seal the shaft at a discharge side, a balance drum connected to the shaft between the impeller and the second sealing device, the balance drum defining a front side facing the at least one impeller and a back side facing the second sealing device, a relief passage between the balance drum and a stationary part, a balance line connecting the back side with the suction side, a discharge opening arranged at the relief passage between the front side and the back side, and a connecting line connecting the discharge opening with the first sealing device.

Abstract: A fluid permeable healer assembly for aerosol-generating systems comprises a substrate (1) comprising an opening (100) through the substrate, an electrically conductive substantially flat filament arrangement (2) arranged over the opening, and clamping means (3) mechanically fixing the filament arrangement to the substrate. The clamping means are electrically conductive and serve as electrical contacts for providing a heating current through the filament arrangement. The invention also relates to a method for assembling a fluid permeable heater.

Abstract: A cartridge for an aerosol-generating system is provided, the cartridge including: a liquid storage portion including a housing to contain a liquid aerosol-forming substrate; and a heater assembly including an electrically insulating element having an opening, an electrical heating element supported by the insulating element and to heat the substrate to form an aerosol, first and second electrically conductive contact portions disposed at opposite sides of the opening and to contact with a battery to supply power to the heater assembly, and a capillary material including a ceramic or a ceramic-based material and having first and second faces, the first face being in physical contact with the heating element and the second face being opposite the first face, the capillary material to convey the substrate to the heating element by capillary action, the heater assembly being fixed to the housing of the liquid storage portion.

Abstract: A fluid permeable heater assembly for an aerosol-generating system includes a cap and a substantially flat electrically conductive and fluid permeable heating element. The cap includes a hollow body with a first cap opening and a second cap opening. The first cap opening is opposite to the second cap opening. The heating element is configured to vaporize aerosol-forming substrate. The heating element is mounted on the cap, such that the heating element extends across the first cap opening. A cartridge for an aerosol-generating system includes the heater assembly, a liquid storage portion, a mouth piece, and a retainer.

Abstract: A cartridge for an aerosol-generating system is provided, the cartridge including: a liquid storage portion including a housing containing a liquid aerosol-forming substrate; a heater assembly including an electrical heating element configured to heat the liquid aerosol-forming substrate to form an aerosol; and a capillary material disposed in contact with the electrical heating element and including a ceramic or a ceramic-based material, the capillary material being configured to convey the liquid aerosol-forming substrate to the electrical heating element, the electrical heating element being supported by a support element having an opening, and the heater assembly further includes first and second electrically conductive contact portions disposed at opposite sides of the opening and being configured to contact with an external electrical power supply. An aerosol-generating system including the cartridge is also provided.

Abstract: A heater assembly for an aerosol-generating system is provided, including: a fluid-permeable heating element to vaporise a liquid aerosol-forming substrate; and a transport material to transport the substrate to the heating element and having a thickness defined between a first surface and an opposing second surface thereof, the first surface being in fluid communication with the element and the second surface being arranged to receive the substrate and provided with at least one hole extending into the material to a depth corresponding to at least a part of the thickness to define a formed fluid channel for the substrate, the material including a capillary material having elongate fibres, an average direction of the fibres is substantially parallel to the first and second surfaces, and the hole extends substantially perpendicular to the average direction. A method of manufacturing a heater assembly, a cartridge, and an aerosol-generating system are also provided.