Heating apparatus and cleaner having the same

A cleaner, comprising:

• a cleaner body in which a water container is detachably mounted;
• a nozzle assembly rotatably connected to a lower part of the cleaner body that is configured to dispense steam;
• and
• a heating apparatus that includes a heating casing to receive water from the water container, convert the water into steam, and supply the steam to the nozzle assembly,
• wherein the heating apparatus further comprises:
• a heating member formed in contact with the heating casing to heat the heating casing;
• a lower housing that is formed separately from the heating casing and that accommodates the heating casing and the heating member;
• and
• an upper housing that closes an open upper part of the heating casing disposed inside the lower housing, includes a steam discharge hole to discharge steam formed in the heating casing, and is separately coupled to the lower housing,
• wherein the heating casing includes a plurality of ribs and each successive rib includes a space to collect water and convert the water into steam.