Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Can you explain the ionizer?  Does it have metal collection blade to wipe clean?
Document: I have asthma, my husband has many allergies. This keeps the house allergens down to a dull roar, keeps a 20x15 room cool, with (air you can feel) moving. Only thing, wish it had a brush to clean the ionizer, just realize that all ionizers get pretty dirty and will leave dust on the floor, that's how they work.
I typically suffer from allergies and stuffiness at night and usually like to sleep with the window open. In my quest to keep energy costs down in the winter, I bought ionizer fan. Love it! The fan feels like clean fresh air is flowing through the room. No more stuffiness and now I can sleep through the night!
I've had this tower fan for several years now. It's about all I needed when I had a cool basement apartment during the Summers. Great airflow, I love the remote control and the oscillating movement is always smooth. I'm not sure if the ionizer does much, but even if it did, the only negative with this fan is that I can't get inside of it to clean out the dust collected.
That something turned out to be a half-inch, hollow metal ball-bearing type piece that should've been inside the bracket securing the axle.
It was basically just a metal bracket with a big hole that the top axle of the fan blades was spinning in/rubbing against when on and rattling around in when off and moving the fan.
No sound, very cold air. Easy to keep clean. I thought it would stand out because of how tall it is. Nope blends right in. I am very happy, SO happy we got a 2nd after this one came in ...
===UPDATE===Oct. 28, 2013I'm still happy with the operation... BUT, when it was time to clean the inside, it's a different story. Wherever this was assembled, they used probably too many screws and a couple were not the same as the others and would not come out. Finally drilled the problem screws out then threw them away. To secure the back or access cover, I used Velcro strips on each side.
Quiet. Great air for a tower fan. Remote works. Ionizer seems cool. Had it for a month and not a bad thing to say.
I like everything about it,, the different speeds, the ionizer, & the oscillator...  One great fan. The best buy I've made in a while.
GREAT fan! keeps my whole living room and kitchen cool/cold. I love the ionizer because i have MAJOR allergies and its dusty in town where i live so it keeps alot of the items in my livingroom clear of dust.
Answer: No it's all inside the unit no need for cleaning. It is completely un reachable. Just vacuum off outside of fan.