Patent EP-3388752-A1 (EP)
Inventor: MAZZILLI LUCIANO
IPC: F24F11/30
Filed: 2018-04-10
Abstract: The present invention relates to a system configured to absorb and release heat, connectable to a compartment (H) in such a way as to have a part exposed to the external environment  Said system comprises: 
- a first chamber (1) comprising 
ˆ˜ a first inlet (1A) for the passage of a first quantity of air from said compartment (H) to said first chamber (1), 
ˆ˜ first opening/closing means (11A) for opening/closing said first inlet (1A) in order to allow/prevent the passage of said first quantity of air through said first inlet (1A), 
ˆ˜ a first outlet (1B) for the passage of a second quantity of air from said first chamber (1) to said compartment (H), 
ˆ˜ second opening/closing means (11B) for opening/closing said first outlet (1B) in order to allow/prevent the passage of said second quantity of air through said first outlet (1B), 
ˆ˜ a second inlet (1A') for the passage of a third quantity of air from the outside to said first chamber (1), 
ˆ˜ third opening/closing means (11A') for opening/closing said second inlet (1A') in order to allow/prevent the passage of said third amount of air through said second inlet (1A'), 
ˆ˜ a second outlet (1B') for the passage of a fourth quantity of air from said first chamber (1) to the outside, 
ˆ˜ fourth opening/closing means (11B') for opening/closing said second outlet (1B') in order to allow/prevent the passage of said fourth quantity of air through said second outlet (1B'),  
- a second chamber (2) comprising: 
ˆ˜ first ventilation means (21) for generating a first flow of air and directing said first flow of air inside said second chamber (2), 
ˆ˜ 
ˆ˜ second ventilation means (22) for generating a second flow of air and directing said second flow of air outside said second chamber (2), 
ˆ˜ a heat storage device (20) containing inside a mixture, where said heat storage device (20) is arranged within said second chamber (2) and said mixture comprises a phase change material capable of passing from a solid state to a liquid state, when the internal temperature of said second chamber (2) it greater than a predetermined melting temperature (T f ), and from said liquid state to said solid state, when the internal temperature of said second chamber (2) is less than a predetermined solidification temperature (T s ); 
said second chamber (2) being arranged inside said first chamber (1) in such a way as to divide said first chamber (1) into a first part (11) and a second part (12), where said first part (11) comprises said first inlet (1A), said second inlet (1A') as well as said first ventilation means (21), and said second part (12) comprises said first outlet (1B), said second outlet (1B') and said second ventilation means (22), 
- first temperature measuring means (S1) for measuring a first temperature t 1 , where said first temperature t 1  is the internal temperature of said compartment (H), 
- second temperature measuring means (S2) for measuring a second temperature t 2 , where said second temperature t 2  is the internal temperature of said second chamber (2), said second temperature measuring means (S2) being arranged within said second chamber (2), 
- third temperature measuring means (S3) for measuring a third temperature t 3 , where said third temperature is the outdoor temperature, 
- a control logic unit (5) connected to each of said opening/closing means (11A, 11B, 11A',11B'), as well as to each of said temperature measuring means (S1, S2, S3) and to each of said ventilation means (21,22), configured to: 
ˆ˜ open/close said first inlet (1A) through said first opening/closing means (11A), 
ˆ˜ open/close said first outlet (1B) through said second opening/closing means (11B), 
ˆ˜ open/close said second inlet (1A') through said third opening/closing means (11A'), 
ˆ˜ open/close said second outlet (1B') through said fourth opening/closing means (11B'), 
ˆ˜ perform one or more comparisons between temperatures, 
ˆ˜ close said first inlet (1A) and said first outlet (1B), as well as said second inlet (1A') and said second outlet (1B'), and turn off said first ventilation means (21) and said second ventilation means (22), when said first temperature t 1  is less than said predetermined melting temperature (T f ), and when said first temperature t 1  is less than said third temperature (T3), 
ˆ˜ open said second inlet (1A') and said first outlet (1B) and turn on said first ventilation means (21) and said second ventilation means (22), when said first temperature t 1  is less than said predetermined melting temperature (T f ) and said first temperature t 1  is greater than said third temperature t 3 , 
ˆ˜ open said first inlet (1A) and said first outlet (1B), close said second inlet (1A') and said second outlet (1B'), and turn on said first ventilation means (21) and said second ventilation means (22), when said first temperature t 1  is greater than said predetermined melting temperature (T f ), 
ˆ˜ close said first inlet (1A) and said first outlet (1B), open said second inlet (1A') and said second outlet (1B'), and turn on said first ventilation means (21) and said second ventilation means (22), when said second temperature t 2  is greater than said predetermined melting temperature (T f ) of a predetermined value and said third temperature t 3  is greater than said predetermined solidification temperature (T s ), 
ˆ˜ close said first inlet (1A) and said first outlet (1B), open said second inlet (1A') and said second outlet (1B'), and turn on said first ventilation means (21) and said second ventilation means (22), when said second temperature t 2  is greater than said predetermined melting temperature (T f ) of a predetermined value and said third temperature t 3  is less than said predetermined solidification temperature (T s ).