I assume that you live somewhere in North America with 120V power.

There are a few ways you can get 240V. One way is to use the stove and dryer plug. Those are always 240V.

Another way is you can probably just join 2 seperate breaker outlets which are 120V. Now you should consult with an electrian first before you do this because I don't know if its going to be up to code and everything. So do this under your own risk.

But I believe the Stove and Dryer plugs which are 240V are basically 2 separate 120V joined together with a larger fuse. However the wiring is probably a different gauge so you will be stuck with a smaller 15A instead of the 40A which are used by Stoves/Dryer.  Again I am not an expert so ask an electrician first.