Electrostatic filter unit and ventilation device with electrostatic filter unit

Abstract

The present invention relates to an electrostatic filter unit for a ventilation device (5), which comprises an ionization unit (2) with at least one ionization element (28) and at least one counter electrode (22), and a separation unit (3). The filter unit (1) is characterized in that the at least one counter electrode (22) has at least one opening (220) and the ionization element (28) comprises at least one needle-shaped ionization electrode (21) with a tip (211); the ionization electrode (21) is perpendicular to the opening (220) of the counter electrode (22) and the tip (211) is in the opening (220) of the counter electrode (22). In addition, the invention relates to a ventilation device (5) which has at least one such filter unit.

Description

technical field

[0001] The invention relates to an electrostatic filter unit and a ventilation device with such a filter unit. Background technique

[0002] It is known to filter dirt from the air by means of ventilation. Here, mechanical filters such as non-woven mats, porous foam media, expanded metal filters or perforated plate filters can be used. In the case of ventilation systems for extractor hoods which are operated in kitchens, liquid and solid dirt are filtered out of the smoke and steam generated during cooking. As mechanical filters, in particular expanded metal filters, perforated plate filters, baffle filters—which can also be referred to as vortex filters, edge filter filters and porous foam media—are used here.

[0003] Furthermore, a cooker hood is known, for example from DE 2146288 A, in which an electrostatic filter is used. In this cooker hood, the electrostatic filter is composed of a plate-shaped separation electrode and a counter electrode, and a li...

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