Hand held appliance

Abstract

A hair care appliance that includes a body, a fluid flow path extending from a fluid inlet into the appliance to a fluid outlet from the body, a heater for heating fluid in the fluid flow path, a pre-heater located upstream of the heater and a thermal safety device positioned between the pre-heater and the heater. The pre-heater may include a resistive element. The pre-heater may be electrically connected to the heater via a heater circuit. The thermal safety device may be electrically connected to the heater via the heater circuit. When the appliance is activated, fluid may flow from the fluid inlet through the pre-heater, past the thermal safety device, through the heater and on to the fluid outlet. The thermal safety device may extend orthogonal to a longitudinal axis A-A of the body.

1 . A hair care appliance comprising a body, a fluid flow path extending from a fluid inlet into the appliance to a fluid outlet from the body, a heater comprising a heater element for heating fluid in the fluid flow path, a pre-heater located upstream of the heater and a thermal safety device positioned between the pre-heater and the heater and a wall extending around the periphery of the heater element. 
     
     
         2 . The appliance of  claim 1 , wherein the pre-heater comprises a resistive element. 
     
     
         3 . The appliance of  claim 2 , wherein, the pre-heater is electrically connected to the heater via a heater circuit. 
     
     
         4 . The appliance of  claim 1 , wherein the thermal safety device is electrically connected to the heater via the heater circuit. 
     
     
         5 . The appliance of  claim 1 , wherein when the appliance is activated, fluid flows from the fluid inlet through the pre-heater, past the thermal safety device, through the heater and on to the fluid outlet. 
     
     
         6 . The appliance of  claim 1 , wherein the body has a first end, a second end and a longitudinal axis A-A extending from the first end to the second end, wherein the fluid flow path extends along the longitudinal axis A-A. 
     
     
         7 . The appliance of  claim 6 , wherein the thermal safety device extends orthogonal to the longitudinal axis A-A of the body. 
     
     
         8 . The appliance of  claim 6 , wherein the pre-heater extends orthogonal to the longitudinal axis A-A of the body. 
     
     
         9 . The appliance of  claim 6 , wherein the pre-heater extends across the length of the thermal safety device. 
     
     
         10 . The appliance of  claim 1 , wherein the wall additionally extends around the periphery of the pre-heater. 
     
     
         11 . The appliance of  claim 1 , wherein the appliance is a hairdryer.