Ventilable Portable Structure Assembly

Abstract

A ventilable portable structure arrangement is transformable between a collapsed state and an erected state. The assembly comprises a first portion ( 102 ) of foldable material arranged to define, when in the erected state, an interior chamber ( 106 ). A second portion ( 104 ) of foldable material is also provided and arranged to define, when in the erected state, a thermal chimney having an inlet ( 116 ) at one end thereof and an outlet ( 118 ) at another end thereof. The first and second portions ( 102, 104 ) are arranged so as to permit, when in the erected state, flow of air through the interior chamber ( 106 ) into the thermal chimney via the inlet ( 116 ) in response to heating of air substantially passing through the thermal chimney, the air entering the thermal chimney being expelled from the thermal chimney via the outlet ( 118 ).

1 . A ventilable portable structure assembly transformable between a collapsed state and an erected state, the assembly comprising:
 a first portion of foldable material arranged to define, when in the erected state, an interior chamber; and   a second portion of foldable material arranged to define, when in the erected state, a thermal chimney having an inlet at one end thereof and an outlet at another end thereof; wherein   the first and second portions are arranged so as to permit, when in the erected state, flow of air through the interior chamber into the thermal chimney via the inlet in response to heating of air substantially passing through the thermal chimney, the air entering the thermal chimney being expelled from the thermal chimney via the outlet.   
     
     
         2 . An assembly as claimed in  claim 1 , wherein a proportion of the air entering the thermal chimney via the inlet is heated prior to entering the thermal chimney. 
     
     
         3 . An assembly as claimed in  claim 1 , wherein the thermal chimney comprises a conduit joining the inlet to the outlet. 
     
     
         4 . An assembly as claimed in  claim 3 , wherein the second portion is further arranged to define an insulating space adjacent the conduit. 
     
     
         5 . An assembly as claimed in  claim 3 , wherein the conduit arranged to conduct heat. 
     
     
         6 . An assembly as claimed in  claim 4 , wherein the insulating space is inflatable. 
     
     
         7 . An assembly as claimed in  claim 4 , wherein the insulating space is filled with a gas. 
     
     
         8 . An assembly as claimed  claim 4 , wherein the insulating space is peripherally bounded by a layer of substantially unidirectional heat-transmissive material. 
     
     
         9 . An assembly as claimed  claim 1 , wherein the interior chamber has a ventilation inlet. 
     
     
         10 . An assembly as claimed in  claim 1 , wherein the interior chamber comprises a further chamber therein. 
     
     
         11 . An assembly as claimed in  claim 10 , wherein the further chamber comprises a first reticulated region. 
     
     
         12 . An assembly as claimed in  claim 11 , wherein the first reticulated region is disposed opposite the ventilation inlet. 
     
     
         13 . An assembly as claimed in  claim 10 , wherein the further chamber comprises a second reticulated region for preventing ingress of an insect into the further chamber. 
     
     
         14 . An assembly as claimed in  claim 13 , wherein the second reticulated region serves as a further outlet to permit air flow through the further chamber. 
     
     
         15 . An assembly as claimed in  claim 1 , further comprising a throttle disposed opposite and proximal to the inlet of the thermal chimney. 
     
     
         16 . An assembly as claimed in  claim 1 , further comprising a throttle disposed opposite and proximal to the ventilation inlet of the interior chamber. 
     
     
         17 . (canceled) 
     
     
         18 . (canceled) 
     
     
         19 . (canceled) 
     
     
         20 . (canceled) 
     
     
         21 . (canceled) 
     
     
         22 . (canceled) 
     
     
         23 . (canceled) 
     
     
         24 . (canceled) 
     
     
         25 . An assembly as claimed in  claim 1 , wherein the first portion formed from foldable material defines the interior chamber, when in the erected state, so as to have a tapered volume. 
     
     
         26 . (canceled) 
     
     
         27 . (canceled) 
     
     
         28 . An assembly as claimed in  claim 1 , wherein the thermal chimney is a solar chimney. 
     
     
         29 . A tent comprising the ventilable portable structure assembly as claimed in  claim 1 . 
     
     
         30 . A mosquito net assembly comprising the ventilable portable structure assembly as claimed in  claim 1 . 
     
     
         31 . (canceled) 
     
     
         32 . (canceled)