Cleaner and method for controlling cleaner

Abstract

The present disclosure relates to a wet mop rag module for a cleaner, the wet mop rag module including a module housing, a water tank configured to store water therein, at least one rotary cleaning unit to which a mop rag is coupled, and a steam generator configured to heat water supplied from the water tank, in which the steam generator includes a heating chamber having a flow path in which moisture flows, a heater configured to supply heat to the heating chamber, and an overheating shut-off device configured to cut off a supply of power to the heater when a temperature of the heating chamber is equal to or higher than a predetermined reference temperature, thereby preventing the heating chamber from being overheated.

1 . A wet mop rag module for a cleaner, which cleans a floor surface by wiping away debris, the wet mop rag module comprising:
 a module housing;   a water tank coupled to the module housing and configured to store water therein;   at least one rotary cleaning unit disposed at a lower side of the module housing and configured such that a mop rag is coupled to the rotary cleaning unit; and   a steam generator configured to heat water supplied from the water tank,   wherein the steam generator comprises:   a heating chamber having a flow path in which moisture flows;   a heater disposed at a lower side of the heating chamber and configured to supply heat to the heating chamber; and   an overheating shut-off device disposed at one side of the heating chamber and configured to cut off a supply of power to the heater when a temperature of the heating chamber is equal to or higher than a predetermined reference temperature.   
     
     
         2 . The wet mop rag module of  claim 1 , wherein the steam generator further comprises a temperature detector disposed on a lateral surface of the heating chamber and configured to measure the temperature of the heating chamber. 
     
     
         3 . The wet mop rag module of  claim 1 , wherein the steam generator further comprises:
 a lower cover disposed at a lower side of the heater and configured to cover the heater; and   a lower insulator disposed between the heater and the lower cover and configured to block heat transferred from the heater.   
     
     
         4 . The wet mop rag module of  claim 1 , wherein the steam generator further comprising:
 a sealer disposed at an upper side of the heating chamber and configured to seal the upper side of the heating chamber;   an upper insulator disposed at an upper side of the sealer and configured to block heat transferred from the heating chamber; and   an upper cover disposed at an upper side of the upper insulator.   
     
     
         5 . The wet mop rag module of  claim 1 , wherein the heater is provided as two or more heaters symmetrically disposed based on an imaginary symmetric surface, and the overheating shut-off device is disposed on the symmetric surface. 
     
     
         6 . The wet mop rag module of  claim 1 , further comprising:
 a module battery configured to supply power to the heater,   wherein the overheating shut-off device cuts off a supply of power from the module battery to the heater when the temperature of the heating chamber is equal to or higher than the reference temperature.   
     
     
         7 . A cleaner comprising:
 a cleaner main body comprising a main battery; and   a wet mop rag module connected to the cleaner main body and configured to clean a floor surface by wiping away debris,   wherein the wet mop rag module comprises:   a module housing;   a water tank coupled to the module housing and configured to store water therein;   at least one rotary cleaning unit disposed at a lower side of the module housing and configured such that a mop rag is coupled to the rotary cleaning unit;   a drive motor accommodated in the module housing and configured to provide a rotational force to the rotary cleaning unit; and   a steam generator configured to heat water supplied from the water tank, and   wherein the steam generator comprises:   a heating chamber having a flow path in which moisture flows;   a heater disposed at a lower side of the heating chamber and configured to supply heat to the heating chamber; and   an overheating shut-off device disposed at one side of the heating chamber and configured to cut off a supply of power to the heater when a temperature of the heating chamber is equal to or higher than a predetermined reference temperature.   
     
     
         8 . The cleaner of  claim 7 , wherein when the temperature of the heating chamber is equal to or higher than the reference temperature, the drive motor receives power, and a supply of power to the heater is cut off. 
     
     
         9 . The cleaner of  claim 7 , further comprising:
 a module battery configured to supply power to the steam generator,   wherein the main battery supplies power to the drive motor, and the module battery supplies power to the heater.   
     
     
         10 . The cleaner of  claim 9 , wherein the overheating shut-off device cuts off a supply of power from the module battery to the heater when the temperature of the heating chamber is equal to or higher than the reference temperature. 
     
     
         11 . A method of controlling a cleaner comprising a wet mop rag module configured to supply a pair of mop rags with water heated by a steam generator, the method comprising:
 measuring a temperature of the steam generator;   determining whether the temperature of the steam generator is equal to or higher than a preset reference temperature;   determining that overheating occurs when the temperature of the steam generator is equal to or higher than the preset reference temperature, and counting the number of times the overheating occurs; and   ending an operation of the steam generator when the counted number of times is equal to or larger than a preset reference number of times.   
     
     
         12 . The method of  claim 11 , wherein the counted number of times is initialized to zero when the temperature of the steam generator is lower than the preset reference temperature.