Portable fluid fuel air heater

Abstract

A portable fluid fuel air heater comprising a combustion chamber adapted to accommodate a combustion of a fluid fuel; a supply conduit for supplying said fluid fuel to the combustion chamber; at least one electrical device required for the operation of the heater mounted on board the heater; an outer surface of the heater comprising a cavity-like portion for receiving an electric battery in a removable manner up to an operative position of the battery in which the battery is adapted to electrically power the electrical device and is at least partially inserted into said cavity-like portion, said cavity-like portion being configured to keep the battery outside the outer surface of the heater in said operative position of the battery.

1 . A portable fluid fuel air heater comprising:
 a combustion chamber for accommodating a combustion of a fluid fuel;   a supply conduit for supplying said fluid fuel to the combustion chamber;   at least one electrical device required for the operation of the heater mounted on board of the heater;   an outer surface of the heater comprising a cavity-like portion for receiving an electric battery in a removable manner until reaching an operative position of the battery wherein the battery is adapted to electrically power the electrical device,   
       said cavity-like portion separating the inside of the heater from the outside of the heater and being configured to keep the battery outside the heater in said operative position of the battery. 
     
     
         2 . The heater according to  claim 1 , wherein said cavity-like portion comprises guide surfaces adapted to slidably guide the battery between a battery inlet position and said operative position along a battery sliding direction, said guide surfaces extending parallel with said battery sliding direction. 
     
     
         3 . The heater according to  claim 2 , wherein the cavity-like portion comprises a stop surface arranged transversely to the battery sliding direction, adapted to stop the sliding of said battery at said operative position. 
     
     
         4 . The heater according to  claim 1 , wherein said outer surface comprises a recessed portion for gripping the battery, adjacent to said cavity-like portion and as an extension of said cavity-like portion, forming a space that can be accessed from the outside to allow an operator to insert a finger to grasp the battery when said battery is in the operative position in order to remove it. 
     
     
         5 . The heater according to  claim 4 , wherein said recessed portion for gripping the battery is developed starting from said stop surface moving away from said cavity-like portion. 
     
     
         6 . The heater according to  claim 1 , wherein the cavity-like portion faces towards the outside of the heater along an edge of the cavity-like portion, wherein said outer surface of heater comprises a first portion of the outer surface substantially transverse to said battery sliding direction, wherein said edge of the cavity-like portion comprises a first edge portion of the cavity-like portion arranged on said first portion of the outer surface. 
     
     
         7 . The heater according to  claim 6 , wherein said heater outer surface comprises a second portion of the outer surface adjacent to said first portion of the outer surface and substantially parallel with said battery sliding direction, said edge of the cavity-like portion comprising a second edge portion of the cavity-like portion which is extended on said second outer portion surface. 
     
     
         8 . The heater according to  claim 1 , wherein said cavity-like portion comprises a snap engagement device to retain said battery when it is in said operative position. 
     
     
         9 . Heater according to  claim 1 , comprising a control box integral with said combustion chamber and defining an outer surface of the control box, said outer surface of the control box comprising said cavity-like portion. 
     
     
         10 . The heater according to  claim 9 , wherein said control box forms a support base for said combustion chamber and comprises said second portion of outer surface, wherein said second portion of outer portion is adapted to be supported on a floor or a supporting surface. 
     
     
         11 . The heater according to  claim 2  wherein the combustion chamber is substantially tubular and is developed along a main axis of the combustion chamber and has an heated air outlet opening at an end of said tubular combustion chamber, wherein said battery sliding direction is substantially parallel with said main axis of the combustion chamber, and/or wherein said first portion of the outer surface faces the same side as said heated air outlet opening. 
     
     
         12 . The heater according to  claim 1 , comprising an automatic electric switch adapted to disconnect the battery power supply when a power supply from an electrical distribution network is available, and to connect the battery power supply when a power supply from an electrical distribution network is not available. 
     
     
         13 . The heater according to  claim 1 , comprising a removable battery adapted to be received and retained in said cavity-like portion, said removable battery being delimited by an outer battery surface, wherein at least one portion of said battery outer surface remains visible when said battery is in said operative position of the battery.