This application relates to an electro-purification device and an air curtain
machine. The electro-purification device includes a
discharge assembly, comprising at least one
discharge unit. Each
discharge unit includes multiple linear
corona discharge electrodes and a ring-shaped grounding
electrode, all fixedly arranged. All
corona discharge electrodes and the ring-shaped grounding
electrode are arranged opposite each other along a first direction, and all
corona discharge electrodes are arranged radially towards the side closest to the ring-shaped grounding
electrode. An insulating back-corona element is also included, arranged along the first direction on the side of the ring-shaped grounding electrode facing away from the
corona discharge electrodes. By arranging all
corona discharge electrodes radially towards the side closest to the ring-shaped grounding electrode, not only can the area of
corona discharge be increased, but a cone-shaped
electric field can also be formed, making the corona discharge area compact. Therefore, it can concentrate and rapidly treat pathogens such as
smoke, odors, droplets, and aerosols in enclosed spaces. Furthermore, by using the insulating back-corona element to generate back-corona discharge, an even better purification effect can be achieved.