Double flow heat exchanger device

Abstract

The invention relates to a device ( 1 ) enabling the exchange of heat between a first fluid ( 2 ) and a second fluid ( 3 ) flowing counter current through the device, comprising: an outer casing ( 4 ) sealed against the two fluids, having a long shape that extends between first ( 7 ) and second ( 9 ) ends; a wall ( 5 ) enabling heat exchange between the fluids, housed inside the outer casing; a first inlet ( 6 ) for the first fluid ( 2 ), formed at the first end ( 7 ) of the outer casing; a second inlet ( 8 ) for the second fluid ( 3 ), formed at the second end ( 9 ) of the outer casing ( 4 ) opposite the first end ( 7 ), the aforementioned exchange wall ( 5 ) extending between the first ( 6 ) and second ( 8 ) fluid inlets; a first outlet ( 10 ) for extracting the first fluid ( 2 ) from the outer casing ( 4 ), formed in the area at the first end ( 7 ); a second outlet ( 11 ) for extracting the second fluid ( 3 ) from the outer casing ( 4 ), formed in the area at the second end ( 9 ); a first pipe ( 12 ) enabling the flow of the first fluid ( 2 ) inside the outer casing ( 4 ); and a second pipe ( 13 ) enabling the flow of the second fluid ( 3 ) inside the outer casing ( 4 ), such that (i) the second outlet ( 11 ) and the first inlet ( 6 ) and (ii) the first outlet ( 10 ) and the second inlet ( 8 ) are separated respectively by a distance equal to or greater than the length (□) of the exchange wall. The invention also relates to the different uses of the device.

1 . Device ( 1 ) enabling the exchange of heat between at least one first ( 2 ) and one second fluid ( 3 ), said device including:
 an outer casing ( 4 ) sealed against the first and second fluids,   at least one partition wall ( 5 ) enabling the exchange of heat between the first and second fluids, said wall being housed inside said outer casing,   a first inlet opening ( 6 ), for the first fluid ( 2 ), formed at a first end ( 7 ) of the outer casing,   a second inlet opening ( 8 ), for the second fluid ( 3 ), formed at a second end ( 9 ) of the outer casing ( 4 ), opposite the first end ( 7 ) of said casing,   said outer casing ( 4 ) having a long shape extending between its first ( 7 ) and second ( 9 ) ends,   said exchange wall ( 5 ) extending between said first ( 6 ) and second ( 8 ) fluid inlet openings,   a first outlet opening ( 10 ), for extracting the first fluid ( 2 ) from the outer casing ( 4 ),   a second outlet opening ( 11 ), for extracting the second fluid ( 3 ) from the outer casing ( 4 ),   a first pipe ( 12 ) enabling the first fluid ( 2 ) to flow inside the outer casing ( 4 ) between the first inlet opening ( 6 ) and the first outlet opening ( 10 ) of said first fluid, part of the wall of said pipe being made up by a first face of said exchange wall,   a second pipe ( 13 ) enabling the second fluid ( 3 ) to flow inside the outer casing ( 4 ) between the second inlet opening ( 8 ) and the second outlet opening ( 11 ) of said second fluid, part of the wall of said pipe being up by a second face of said exchange wall opposite the first face,   said first and said second fluids being intended to flow in a counter-current manner on both sides of the exchange wall,
 characterized in that: 
   said first outlet opening ( 10 ), for the first fluid ( 2 ), is formed in the region of said first end ( 7 ) of the outer casing ( 4 ),   said second outlet opening ( 11 ), for the second fluid ( 3 ), is formed in the region of said second end ( 9 ) of the outer casing ( 4 ),   in such a manner that said second outlet opening ( 11 ) for the second fluid ( 3 ), and said first inlet opening ( 6 ), for the first fluid ( 2 ), are separated by a distance equal to or greater than the length ( ) of the exchange wall, and   in such a manner that said first outlet opening ( 10 ) for the first fluid ( 2 ), and said second inlet opening ( 8 ), for the second fluid ( 3 ), are separated by a distance equal to or greater than the length ( ) of the exchange wall.   
     
     
         2 . Device ( 1 ) enabling the exchange of heat according to  claim 1 , characterized in that:
 said first inlet opening ( 6 ) for the first fluid ( 2 ), and said second outlet opening ( 11 ) for the second fluid ( 3 ), are situated on a same first side ( 30 ) of said outer casing ( 4 ),   said second inlet opening ( 8 ) for the second fluid ( 3 ), and said first outlet opening ( 10 ) for the first fluid ( 2 ), being situated on a same second side ( 31 ) of said outer casing ( 4 ), opposite the first side ( 30 ).   
     
     
         3 . Device ( 1 ) enabling the exchange of heat according to  claim 1 , characterized in that:
 said first pipe ( 12 ) for the first fluid ( 2 ) includes a first segment ( 14 ) which extends along the exchange wall ( 5 ) without contacting said exchange wall, and in that   said second pipe ( 13 ) for the second fluid ( 3 ) includes a second segment ( 16 ) that extends along the exchange wall ( 5 ), without contacting said exchange partition wall.   
     
     
         4 . Device ( 1 ) enabling the exchange of heat according to  claim 3 , characterized in that:
 said first segment ( 14 ) extends from the exchange wall ( 5 ) as far as the first outlet opening ( 10 ), following the exchange wall and parallel to said exchange wall, and in that   said second segment ( 16 ) extends from the exchange wall ( 5 ) as far as the second outlet opening ( 11 ), following the exchange wall and parallel to said exchange wall.   
     
     
         5 . Device ( 1 ) enabling the exchange of heat according to  claim 1 , characterized in that said device also comprises:
 a first insulating wall ( 18 ) disposed between the exchange wall ( 5 ) and said first segment ( 14 ) of the first pipe ( 12 ), and   a second insulating wall ( 19 ) disposed between the exchange wall ( 5 ) and said second segment ( 16 ) of the second pipe ( 13 ),   said first ( 18 ) and said second ( 19 ) insulating walls being disposed on both sides of the exchange wall ( 5 ) and at least along the length of said exchange wall.   
     
     
         6 . Device enabling the exchange of heat according to  claim 1 , characterized in that:
 said first inlet opening ( 6 ) for the first fluid ( 2 ) and said first outlet opening ( 10 ) for the first fluid ( 2 ) are disposed on the outer casing ( 4 ) approximately in an opposite manner, so that the inlet and the outlet of the first fluid ( 2 ) are approximately carried out following a first direction ( 20 ) perpendicular or approximately perpendicular to a longitudinal axis ( 21 ) of extension of the outer casing ( 4 ) with a long shape, and in that   said second inlet opening ( 8 ) for the second fluid ( 3 ) and said second outlet opening ( 11 ) for the second fluid ( 3 ) are disposed on the outer casing ( 4 ) approximately in an opposite manner, so that the inlet and outlet of the second fluid ( 3 ) are approximately carried out following a second direction ( 22 ) perpendicular or approximately perpendicular to a longitudinal axis ( 21 ) of extension of the outer casing ( 4 ) with a long shape.   
     
     
         7 . Device enabling the exchange of heat according to  claim 6 , characterized in that said first ( 20 ) and said second ( 22 ) directions are parallel or approximately parallel. 
     
     
         8 . Device ( 200 ) enabling the exchange of heat according to  claim 1 , characterized in that said device also comprises valve means ( 80 ) capable of sealing said second pipe ( 13 ) at the outlet ( 17 ) of the first face of said exchange wall ( 5 ) so as to divert the second fluid ( 3 ), or the outgoing fluid, in said first pipe ( 12 ), in order to move said outgoing fluid ( 3 ) over the second face of said exchange wall ( 5 ). 
     
     
         9 . Device ( 300 ) enabling the exchange of heat according to  claim 1 , characterized in that said device also comprises electric resistance means ( 301 ) disposed in said first pipe ( 12 ) in the vicinity of the first inlet opening ( 6 ), so as to reheat the first fluid ( 2 ) or the incoming fluid before it moves along the exchange partition wall. 
     
     
         10 . Device ( 300 ) enabling the exchange of heat according to  claim 1 , characterized in that said device also comprises electric resistance means disposed in said second pipe ( 13 ) in the vicinity of the second inlet opening ( 8 ) for the second fluid ( 3 ), so as to supply an injection of heat to the second fluid ( 2 ) or the outgoing fluid before it moves along the exchange partition wall. 
     
     
         11 . Device enabling the exchange of heat according to  claim 1 , characterized in that said device also comprises:
 first filtering means ( 23 ) for the first fluid ( 2 ), disposed in the outer casing ( 4 ) across said first pipe ( 12 ) enabling the first fluid ( 2 ) to flow in the outer casing, between the inlet opening ( 6 ) of the first fluid in the outer casing ( 4 ) and the inlet ( 24 ) of the first fluid ( 2 ) on the exchange partition wall ( 5 ), and   second filtering means ( 25 ) for the second fluid ( 3 ), disposed in the outer casing ( 4 ) across said second pipe ( 13 ) enabling the second fluid ( 3 ) to flow in the outer casing ( 4 ), between the inlet opening ( 8 ) of the second fluid ( 3 ) in the outer casing ( 4 ) and the inlet ( 26 ) of the second fluid ( 3 ) on the exchange partition wall ( 5 ).   
     
     
         12 . Device enabling the exchange of heat according to  claim 1 , characterized in that said device also comprises at least one of the first and second electric fan means below:
 first electric fan means ( 27 ) disposed in said first pipe ( 12 ), so as to generate a flow of the first fluid ( 2 ) in said pipe, and   second electric fan means ( 28 ) disposed in said second pipe ( 13 ), so as to generate a flow of the second fluid ( 3 ) in said pipe.   
     
     
         13 . Device enabling the exchange of heat according to  claim 12 , characterized in that said device also comprises electricity generating means ( 35 ), disposed at least in part in front of said first inlet opening ( 6 ), or in front of said second outlet opening ( 11 ), so as to supply said first ( 27 ) and second ( 28 ) electric fan means with electricity in an independent manner. 
     
     
         14 . Device enabling the exchange of heat according to  claim 13 , characterized in that said electricity generating means ( 35 ) comprise photovoltaic cells ( 48 ,  49 ). 
     
     
         15 . Device enabling the exchange of heat according to  claim 1 , characterized in that said device includes means for draining off the condensates through said first inlet opening ( 6 ) of the first fluid ( 2 ). 
     
     
         16 . Use of a device enabling the exchange of heat according  claim 1 , characterized in that said device enabling the exchange is associated with a room in a house, offices or the like, so as to allow individualized ventilation of said room:
 said first fluid ( 2 ) being the fluid coming into said room,   said second fluid ( 3 ) being the fluid leaving said room,   said first inlet opening ( 6 ) and second outlet opening ( 11 ), of the first ( 2 ) and second ( 3 ) fluids respectively, opening out onto the outside of the house, offices or the like, and   said second inlet opening ( 8 ) and first outlet opening ( 10 ), of the second ( 3 ) and first ( 2 ) fluids respectively, opening out onto the inside of said room.   
     
     
         17 . Use according to  claim 16 , characterized in that said device enabling the exchange of heat is installed in the thickness of a partition wall or a wall ( 41 ) forming said room, or is secured to the inside surface of said partition wall. 
     
     
         18 . Use according to  claim 17 , characterized in that said device is installed in a wall ( 41 ), and in that:
 said first fluid ( 2 ) or the incoming fluid, compared with its direction of flow along the exchange wall ( 5 ), flows in a counter-current manner in said first segment ( 14 ) extending from the outlet ( 15 ) of the exchange wall ( 5 ) as far as the first outlet opening ( 10 ), and in that   said second fluid ( 3 ) or the outgoing fluid, compared with its direction of flow along the exchange wall ( 5 ), flows in a counter-current manner in said second segment ( 16 ) extending from the outlet ( 17 ) of the exchange wall ( 5 ) as far as the second opening ( 11 ).   
     
     
         19 . Use according to  claim 18 , characterized in that said first segment ( 14 ) is disposed between the exchange wall ( 5 ) and the surface ( 31 ) of the wall ( 41 ) in contact with the inside environment ( 43 ). 
     
     
         20 . Use according to  claim 16 , characterized in that said device ( 1 ) enabling the exchange of heat is installed in, or associated with, one of the following elements:
 a lintel of an opening of said room, of the window, door or French window type, or the like,   a roller blind box,   a frame of an opening that has an opening frame or a fixed frame.   
     
     
         21 . Use according to  claim 16 , characterized in that a longitudinal axis of said device ( 1 ) for exchanging heat is disposed horizontally or approximately horizontally. 
     
     
         22 . Use according to  claim 16 , characterized in that a longitudinal axis of said device ( 1 ) for exchanging heat is disposed vertically or approximately vertically.