Method and means for pumping in heat exchange applications

Abstract

Equipment comprising a pump or fan embodiment arranged for connection to a heat exchanger where heat transfer between two media flows is effected by means of co-rotating surfaces. Cavities and rotating disc surfaces are stacked at different levels along a rotating shaft and heat exchange takes place from one level along the rotating shaft to another level. In a counter-flow heat exchanger one of the medias can, from a center channel inlet, enter a cavity between two rotating disc surfaces and then passing the cavity exit the cavity in radial slots at the periphery between two disc surfaces.

1 . A method of pumping media in heat exchangers with rotating disc surfaces and cavities between the disc surfaces in a cylindrical housing, for the flow that passes heat exchanger process, entering cavities between heat transfer surfaces at the periphery and exits the cavities through channels in centre of heat exchanger in several parallel cavities which are formed between said surfaces in the cylindrical housing, whereby no leakage occurs between said surfaces and the cylindrical housing, causing the major part of the flowing medium to pass through a rotating flow-mechanical boundary layer adjacent to the rotating transfer surface in lamellar or turbulent flow, said medium or media is introduced to the periphery of the rotating surfaces with the medium or media already in rotation in the rotational direction of said surfaces, said discs are divided into sections by means of partition walls so constructed that said flow is delivered separated from the centre to the periphery, and subsequent to passage over the rotating disc surfaces the flow leaves through channels in the center of the heat exchanger, characterized by that pumping is arranged in one or the same pump or fan embodiment with the same speed of rotation as the heat exchanger, connected to the heat exchanger and giving pumping effect by bringing to rotation the medium entering the heat exchanger and also giving pumping effect by bringing to rotation the medium that leaves the heat exchanger. 
   
   
       2 . A method according to  claim 1  characterized by that medium ( 3 ), which shall enter the heat exchange process, enters in pump or fan through inlet openings ( 5 ) at the centre of the pump or fan embodiment and leaves the pump or fan through outlet openings ( 18 ) at the periphery axially connected to channels at the periphery into the heat exchanger. 
   
   
       3 . A method according to  claim 1  characterized by, that medium ( 4 ), which has passed heat exchange process, enters pump or fan embodiment through an inlet openings ( 11 ) at the pump or fan equipment centre in the part that is connected to the heat exchanger centre of and leaves pump or fan through outlet openings ( 13 ) radially or axially in the periphery of the pump or fan. 
   
   
       4 . A method according to  claim 2  characterized by that the medium ( 3 ) that shall pass heat exchanger process enters sector formed or nearly sector formed openings ( 5 ) in the lid ( 6 ) and passes to axial openings ( 18 ) at the periphery, for outlet of the flow from the pump or fan, in pump or fan bottom ( 10 ) connected to the heat exchanger and also for the flow of medium ( 4 ) that has passed through heat exchange process enters sector formed or nearly sector formed openings ( 11 ) in the heat exchanger and exits the pump or fan embodiment at openings ( 13 ) at the periphery of the pump or fan embodiment. 
   
   
       5 . A method according to  claim 4  characterized by that the fan or pump embodiment separates the flow medium ( 3 ) that shall pass the heat exchange process, from the flow of medium ( 4 ) that has passed the heat exchange process with radial, curved formed from centre to periphery or turbine vane formed barriers ( 8 ) and ( 9 ) between lid ([beta]) and bottom ( 10 ) of the pump or fan embodiment and barrier ( 19 ) in the periphery of the pump or fan embodiment radially outside the outlet ( 18 ) for the axial channels for the medium ( 3 ) that shall pass the heat exchanger. 
   
   
       6 . A method according to  claim 4  characterized by that the pump or fan equipment has a pipe system connecting the sector formed openings ( 5 ) in the lid of the pump or fan embodiment and the axial openings ( 18 ) in the bottom of the pump or fan embodiment connected to axial channels in the heat exchanger inlet. 
   
   
       7 . A device for pumping media flow in heat exchangers, with rotating disc surfaces and cavities between the disc surfaces in a cylindrical housing, for the flow that passes heat exchanger process, entering cavities between heat transfer surfaces at the periphery and exits the cavities through channels in centre of heat exchanger in several parallel cavities which are formed between said surfaces in the cylindrical housing, whereby no leakage occurs between said surfaces and the cylindrical housing, causing the major part of the flowing medium to pass through a rotating flow-mechanical boundary layer adjacent to the rotating transfer surface in lamellar or turbulent flow, said medium or media is introduced to the periphery of the rotating surfaces with the medium or media already in rotation in the rotational direction of said surfaces, said discs are divided into sections by means of partition wall so constructed that said flow is delivered separated from the centre to the periphery, and subsequent to passage over the rotating disc surfaces the flow leaves through channels in the centre of the heat exchanger, characterized by that the pump device is arranged in one or the same pump or fan unit with the same speed of rotation as the heat exchanger and connected to the heat exchanger, which has means by bringing to rotation giving pressure head to the medium entering the heat exchanger and also has means by bringing to rotation giving pressure head to the medium that leaves the heat exchanger. 
   
   
       8 . A device according to  claim 7  characterized by that the pump or fan device has a lid ( 6 ) not connected to the heat exchanger with sector formed or nearly sector formed inlet openings ( 5 ) for medium ( 3 ) that enters heat exchange process and a bottom ( 10 ) with outlet openings ( 18 ) for medium ( 3 ) at the periphery for passage to heat exchanger and sector formed or nearly sector formed inlet openings ( 11 ) for medium ( 4 ), outlet openings ( 13 ) for medium ( 4 ) at the periphery, curved formed from centre to periphery or turbine vane formed barriers ( 8 ) and ( 9 ) between lid ( 6 ) and bottom ( 10 ) that guides, brings to rotation and separates medium ( 3 ) and ( 4 ), and barriers ( 19 ) radially outside outlet openings ( 18 ) between lid ( 6 ) and bottom ( 10 ).