A vacuum cleaner may include a cleaner body, a motor in the cleaner body, the motor including: a rotor, and a stator including a stator core, the stator core including: a plurality of yokes circumferentially around the rotor, a plurality of teeth respectively corresponding to the plurality of yokes, each tooth of the plurality of teeth extending from a respectively corresponding yoke of the plurality of yokes toward the rotor, and a plurality of electrical steel sheets, each electrical steel of the plurality of electrical sheet having yoke shapes respectively corresponding to the plurality of yokes and teeth shapes respectively corresponding to the plurality of teeth, and the plurality of electrical steel sheets stacked with an adhesive layer between each two adjacent electrical steel sheets of the plurality of electrical sheets to form the stator core.

A vacuum cleaner may include a cleaner body, a motor in the cleaner body, the motor including: a rotor, and a stator including a stator core, the stator core including: a plurality of yokes circumferentially around the rotor, a plurality of teeth respectively corresponding to the plurality of yokes, each tooth of the plurality of teeth extending from a respectively corresponding yoke of the plurality of yokes toward the rotor, and a plurality of electrical steel sheets, each electrical steel of the plurality of electrical sheet having yoke shapes respectively corresponding to the plurality of yokes and teeth shapes respectively corresponding to the plurality of teeth, and the plurality of electrical steel sheets stacked with an adhesive layer between each two adjacent electrical steel sheets of the plurality of electrical sheets to form the stator core.

A method for forming a dynamoelectric machine including providing a jig, arranging an inner yoke and an outer yoke on the jig, providing concentrically arranged rotor layers between the inner yoke and the outer yoke, filling spaces between adjacent ones of the concentrically arranged rotor layers with a powder which will define stator layers, pressing the powder within the spaces between the adjacent ones of the concentrically arranged rotor layers, and heating, sintering, and/or curing the pressed powder to form the stator layers between the adjacent ones of the concentrically arranged rotor layers.

A method for forming a dynamoelectric machine including providing a jig, arranging an inner yoke and an outer yoke on the jig, providing concentrically arranged rotor layers between the inner yoke and the outer yoke, filling spaces between adjacent ones of the concentrically arranged rotor layers with a powder which will define stator layers, pressing the powder within the spaces between the adjacent ones of the concentrically arranged rotor layers, and heating, sintering, and/or curing the pressed powder to form the stator layers between the adjacent ones of the concentrically arranged rotor layers.

A method for packaging sheet metal parts made from an electrical steel strip or sheet to form a laminated core is disclosed. In order to achieve advantageous process conditions, it is proposed that when the hot-melt adhesive varnish layers are pressurized in the axial direction of the stacked sheet metal parts, they are pressurized multiple times by means of a pressure pulse in that the pressure pulse is exerted through either an impingement with pulse pressure or a relief of pulse pressure.

A method for packaging sheet metal parts made from an electrical steel strip or sheet to form a laminated core is disclosed. In order to achieve advantageous process conditions, it is proposed that when the hot-melt adhesive varnish layers are pressurized in the axial direction of the stacked sheet metal parts, they are pressurized multiple times by means of a pressure pulse in that the pressure pulse is exerted through either an impingement with pulse pressure or a relief of pulse pressure.

A primary adhesive agent is applied to a core laminate in which separation layers are interposed between multiple blocks each consisting of a predetermined number of core constituting plates, the separation layers are removed after the primary adhesive agent is cured, a secondary adhesive agent is applied to lamination surfaces between the blocks, and the secondary adhesive agent is cured.

A primary adhesive agent is applied to a core laminate in which separation layers are interposed between multiple blocks each consisting of a predetermined number of core constituting plates, the separation layers are removed after the primary adhesive agent is cured, a secondary adhesive agent is applied to lamination surfaces between the blocks, and the secondary adhesive agent is cured.

A method is used for producing metal sheets for packets of metal sheets of a rotor and of a stator for three-phase drives, in particular for reluctance machines (reluctance motors) made of magnetic, in particular magnetically soft materials by means of additive production processes, in which the magnetizable material is melted and fed to at least one print head which applies the melted material to form a rotor/stator sheet. The melted material is influenced by an applied magnetic field so that the finished rotor/stator sheet has an area with high magnetic conductivity determining the desired direction of flow.

A method is used for producing metal sheets for packets of metal sheets of a rotor and of a stator for three-phase drives, in particular for reluctance machines (reluctance motors) made of magnetic, in particular magnetically soft materials by means of additive production processes, in which the magnetizable material is melted and fed to at least one print head which applies the melted material to form a rotor/stator sheet. The melted material is influenced by an applied magnetic field so that the finished rotor/stator sheet has an area with high magnetic conductivity determining the desired direction of flow.