Filter equipment having simple and stable installation structure

A filter equipment, comprising:

• a main body portion (110) which has a hollow columnar structure with an open upper portion and a closed lower portion, and has a plurality of air inlets (111) formed on a side surface to be spaced apart at regular intervals;
• a top cap (120) which is detachably attached to an upper opening surface of the main body portion (110), and has a doughnut structure having a width corresponding to that of the filter portion (130) in a plan view, a magnetic member (121) attached to a lower surface of an air vent by a magnetically detachable structure being mounted on an upper surface of the top cap;
• a filter portion (130) which has a hollow columnar structure corresponding to an inner peripheral surface of a main body portion (110), has a doughnut structure having a width corresponding to the lower surface of the top cap (120), has a structure that is in close contact with the lower surface of the top cap (120), purifies the air drawn in from the air inlets (111) of the main body portion (110) and then makes the purified air flow through a central opening portion of the top cap (120) to the air vent;
• and
• a safety wire (140) which is mounted inside the main body portion (110) and extends by a predetermined length to be combined with one side of the top cap (120),
• wherein the filter portion (130) comprises:
• a filtering member (131) which is formed with a large number of pores for adsorbing particulate foreign matter floating in the air, and is formed by being continuously bent into a doughnut shape on the basis of the center;
• a state holding member (132) which is continuously mounted along an outer peripheral surface of the filtering member (131), and maintains the continuous bending structure of the filtering member (131);
• a filter upper end sealing portion (133) which is mounted on the upper surface of the filtering member (131), has a predetermined thickness, has the same plate-like structure as the upper surface of the filtering member (131) in a plan view, and is press-fitted to be in surface contact with the lower surface of the top cap (120) to seal the upper surface of the filtering member (131) and the lower surface of the top cap (120);
• and
• a filter lower end sealing portion (134) which is mounted on the lower surface of the filtering member (131), has a predetermined thickness, has the same plate-like structure as the lower surface of the filtering member (131) in a plan view, and is press-fitted to be in surface contact with the upper surface of the main body portion (110) to seal the lower surface of the filtering member (131) and the upper surface of the main body portion (110),
• wherein the air inlets (111) are formed to be spaced apart by a predetermined angle on the basis of the center of the main body portion (110) in a plan view, and
• the air inlets (111) are formed to have an air flow path formed in a direction parallel to an arbitrary straight line passing through the center of the main body portion (110) in a plan view.