Heat exchanger, and energy recovery device and energy recovery system comprising heat exchanger

Abstract

A heat exchanger ( 1 ) for recovering energy from a fluid, an energy recovery device including the heat exchanger ( 1 ), and an energy recovery system are provided. The heat exchanger ( 1 ) includes: a first fluid collector ( 11 ) provided with an opening ( 111 ) for introducing a first fluid, a cavity ( 113 ) and an outlet ( 112 ); a first fluid flow guide ( 12 ) provided with a first fluid duct ( 114 ) connected with the opening ( 111 ) and the outlet ( 112 ) of the first fluid collector ( 11 ); a second fluid flow guide ( 13 ) provided with a second fluid inlet ( 131 ), a flow diversion chamber ( 132 ), a plurality of heat exchange tubes ( 133 ), a flow collection chamber ( 134 ) and a second fluid outlet ( 135 ), a plurality of first fluid annular spaces ( 141 ) being formed between the outer walls of the heat exchange tubes ( 133 ) and the inner wall of the first fluid duct ( 114 ), where a second fluid is entered from the second fluid inlet ( 131 ) and flows through the plurality of heat exchange tubes ( 133 ), and undergoes heat exchange with the first fluid flowing through the first fluid annular spaces ( 141 ). The heat exchanger ( 1 ), the energy recovery device and the energy recovery system can effectively recover energy in the fluid is simple in installation and convenient in use.

1 . A heat exchanger, comprising:
 a first fluid collector having an opening, a cavity and a first fluid outlet, wherein the opening is used for intake of a first fluid, and the first fluid outlet is for discharging the first fluid;   a first fluid flow guide having one or more first fluid ducts connected with the opening and the first fluid outlet of the first fluid collector; and   a second fluid flow guide having a second fluid inlet, a flow diversion chamber, a plurality of heat exchange tubes, a flow collection chamber and a second fluid outlet, the second fluid inlet for intake of a second fluid having a temperature different from that of the first fluid,   wherein the second fluid enters the plurality of heat exchange tubes upon entering the flow diversion chamber, for collection in the flow collection chamber and subsequent discharge from the second fluid outlet,   the second fluid flow guide being located in the cavity of the first fluid collector, and a plurality of first fluid annular spaces surrounding the plurality of heat exchange tubes being formed between the outer walls of the heat exchange tubes and the inner walls of the first fluid ducts,   wherein upon flow of the second fluid along the plurality of heat exchange tubes the second fluid undergoes heat exchange with the first fluid flowing through the first fluid annular spaces so as to change the temperature of the second fluid before the second fluid is subsequently discharged from the second fluid outlet.   
     
     
         2 . The heat exchanger according to  claim 1 , characterized in that, the second fluid flow guide and the first fluid flow guide are configured such that the second fluid flowing through the plurality of heat exchange tubes and the first fluid flowing through the first fluid annular spaces flow in opposite directions. 
     
     
         3 . (canceled) 
     
     
         4 . (canceled) 
     
     
         5 . (canceled) 
     
     
         6 . (canceled) 
     
     
         7 . (canceled) 
     
     
         8 . (canceled) 
     
     
         9 . The heat exchanger according to  claim 1 , characterized in that, the plurality of first fluid annular spaces are internally provided with a first fluid non-axial flow guide structure for promoting the first fluid to flow in the non-axial direction. 
     
     
         10 . The heat exchanger according to  claim 9 , characterized in that, the first fluid non-axial flow guide structure is a helical structure. 
     
     
         11 . (canceled) 
     
     
         12 . The heat exchanger according to  claim 1 , characterized in that, the centers of the heat exchange tubes are provided with strip baffles, the second fluid annular spaces for the second fluid to pass through are formed between the strip baffles and the inner walls of the heat exchanger tubes. 
     
     
         13 . The heat exchanger according to  claim 12 , characterized in that, one end of the heat exchange tubes is closed, the strip baffles are hollow strip baffles with pipelines formed therein and are connected with the second fluid annular spaces in vicinity of the closed end of the heat exchange tubes. 
     
     
         14 . (canceled) 
     
     
         15 . The heat exchanger according to  claim 12 , characterized in that, the second fluid annular spaces are internally provided with a second fluid non-axial flow guide structure for promoting the second fluid to flow in the non-axial direction. 
     
     
         16 . (canceled) 
     
     
         17 . (canceled) 
     
     
         18 . (canceled) 
     
     
         19 . A heat exchanger, comprising:
 a first fluid collector provided with an opening, a cavity and a first fluid outlet, wherein the opening is used for intake of a first fluid so that the first fluid enters the cavity and discharges from the first fluid outlet; and   a second fluid flow guide provided with a second fluid inlet, a flow diversion chamber, a plurality of heat exchange tubes, a plurality of strip baffles, a flow collection chamber and a second fluid outlet, wherein one end of the heat exchange tubes is closed, the other end connects with the flow diversion chamber, the strip baffles are hollow with pipelines formed therein, the strip baffles each are respectively placed in the heat exchange tubes, forming second fluid annular spaces between the strip baffles and inner walls of the heat exchange tubes, one end of the hollow pipelines of the strip baffles connects with the second fluid annular spaces in vicinity of the closed end of the heat exchange tubes, the other end connects with the flow diversion chamber, wherein the second fluid inlet is used for intake of a second fluid wherein the temperature of said second fluid is different from that of the first fluid, the second fluid enters the second fluid annular spaces in the plurality of heat exchange tubes in parallel upon entering the flow diversion chamber and enters the hollow pipelines of the strip baffles in vicinity of the closed end of the heat exchange tubes, the second fluid is then collected in the flow collection chamber, and is subsequently discharged from the second fluid outlet,   wherein the plurality of heat exchange tubes are placed in the cavity of the first fluid collector, the second fluid flowing through the plurality of heat exchange tubes undergoes heat exchange with the first fluid flowing through the cavity so as to change the temperature of the second fluid before the second fluid is discharged from the second fluid outlet.   
     
     
         20 . The heat exchanger according to  claim 19 , characterized in that, uniform gaps are formed between the plurality of heat exchange tubes. 
     
     
         21 . The heat exchanger according to  claim 19 , characterized in that, the second fluid annular spaces are internally provided with a helical flow guide structure, and outer walls of the plurality of heat exchange tubes are provided with a helical flow guide structure. 
     
     
         22 . An energy recovery device, comprising:
 the heat exchanger according to  claim 1 ; and   external means, for making the temperature of the second fluid discharged from the second fluid outlet of the heat exchanger after heat exchange changed through the external means to an appropriate temperature of use and making the second fluid serve as the first fluid entered to the opening of the first fluid collector of the heat exchanger after use.   
     
     
         23 . The energy recovery device according to  claim 22 , characterized in that, the external means comprises a heater or cooler for heating or cooling the second fluid discharged from the second fluid outlet after heat exchange, the temperature of the first fluid entered the opening of the first fluid collector after use is higher than or lower than that of the second fluid entered the second fluid inlet. 
     
     
         24 . The energy recovery device according to  claim 22 , characterized in that, the external means comprises a mixer that mixes the second fluid discharged from the second fluid outlet with an external pre-heated or pre-cooled third fluid so as to increase or decrease the temperature, the temperature of the first fluid entered the opening of the first fluid collector after use is higher than or lower than that of the second fluid entered to the second fluid inlet. 
     
     
         25 . (canceled) 
     
     
         26 . (canceled) 
     
     
         27 . An energy recovery system, comprising:
 the energy recovery device according to  claim 23 ;   a second fluid source, wherein the second fluid inlet of the heat exchanger is directly or indirectly connected to the second fluid source, for providing the second fluid for the second fluid inlet; and   a fluid discharge pipeline, wherein the first fluid outlet of the first fluid collector of the heat exchanger is directly or indirectly connected to the fluid discharge pipeline,   wherein an inlet of the heater or cooler is directly or indirectly connected to the second fluid outlet of the heat exchanger, for heating or cooling the second fluid being discharged from the second fluid outlet, and an outlet of the heater or cooler is used for discharging the heated or cooled second fluid,   wherein the opening of the first fluid collector of the heat exchanger receives the first fluid after use the temperature of said first fluid is higher than or lower than the temperature of the second fluid so that the first fluid undergoes heat exchange with the second fluid flowing through the plurality of heat exchange tubes of the second fluid flow guide, the temperature of the second fluid is increased or decreased and the second fluid is discharged from the second fluid outlet, wherein the first fluid after heat exchange is discharged to the fluid discharge pipeline via the first fluid outlet.   
     
     
         28 . An energy recovery system, comprising:
 the energy recovery device according to  claim 24 ;   a second fluid source, wherein the second fluid inlet of the heat exchanger is directly or indirectly connected to the second fluid source, for providing the second fluid for the second fluid inlet;   a third fluid source, for providing the pre-heated or pre-cooled third fluid; and   a fluid discharge pipeline, wherein the first fluid outlet of the first fluid collector of the heat exchanger is directly or indirectly connected to the fluid discharge pipeline,   wherein the mixer comprises a fluid temperature and flow regulator, wherein the inlet of said mixer is directly or indirectly connected to the second fluid outlet of the heat exchanger and the third fluid source for mixing the second fluid discharged from the second fluid outlet after heat exchange and the pre-heated or pre-cooled third fluid from the third fluid source and regulating temperature and flow thereof for use, and the mixed fluid becomes the first fluid to enter the opening of the first fluid collector,   wherein the opening of the first fluid collector of the heat exchanger takes in the first fluid after use wherein the temperature of said first fluid is higher than or lower than the temperature of the second fluid, so that the first fluid undergoes heat exchange with the second fluid flowing through the plurality of heat exchange tubes of the second fluid flow guide, and the temperature of the second fluid is increased or decreased, the second fluid is discharged from the second fluid outlet, wherein the first fluid is discharged to the fluid discharge pipeline via the first fluid outlet after heat exchange.   
     
     
         29 . The heat exchanger according to  claim 13 , characterized in that, the second fluid annular spaces are internally provided with a second fluid non-axial flow guide structure for promoting the second fluid to flow in the non-axial direction. 
     
     
         30 . An energy recovery device, comprising:
 the heat exchanger according to  claim 19 ; and   external means, for making the temperature of the second fluid discharged from the second fluid outlet of the heat exchanger after heat exchange changed through the external means to an appropriate temperature of use and making the second fluid serve as the first fluid entered to the opening of the first fluid collector of the heat exchanger after use.   
     
     
         31 . The energy recovery device according to  claim 30 , characterized in that, the external means comprises a heater or cooler for heating or cooling the second fluid discharged from the second fluid outlet after heat exchange, the temperature of the first fluid entered the opening of the first fluid collector after use is higher than or lower than that of the second fluid entered the second fluid inlet. 
     
     
         32 . The energy recovery device according to  claim 30 , characterized in that, the external means comprises a mixer that mixes the second fluid discharged from the second fluid outlet with an external pre-heated or pre-cooled third fluid so as to increase or decrease the temperature, the temperature of the first fluid entered the opening of the first fluid collector after use is higher than or lower than that of the second fluid entered to the second fluid inlet. 
     
     
         33 . An energy recovery system, comprising:
 the energy recovery device according to  claim 31 ;   a second fluid source, wherein the second fluid inlet of the heat exchanger is directly or indirectly connected to the second fluid source, for providing the second fluid for the second fluid inlet; and   a fluid discharge pipeline, wherein the first fluid outlet of the first fluid collector of the heat exchanger is directly or indirectly connected to the fluid discharge pipeline,   wherein an inlet of the heater or cooler is directly or indirectly connected to the second fluid outlet of the heat exchanger, for heating or cooling the second fluid being discharged from the second fluid outlet, and an outlet of the heater or cooler is used for discharging the heated or cooled second fluid,   wherein the opening of the first fluid collector of the heat exchanger receives the first fluid after use the temperature of said first fluid is higher than or lower than the temperature of the second fluid so that the first fluid undergoes heat exchange with the second fluid flowing through the plurality of heat exchange tubes of the second fluid flow guide, the temperature of the second fluid is increased or decreased and the second fluid is discharged from the second fluid outlet, wherein the first fluid after heat exchange is discharged to the fluid discharge pipeline via the first fluid outlet.   
     
     
         34 . An energy recovery system, comprising:
 the energy recovery device according to  claim 32 ;   a second fluid source, wherein the second fluid inlet of the heat exchanger is directly or indirectly connected to the second fluid source, for providing the second fluid for the second fluid inlet;   a third fluid source, for providing the pre-heated or pre-cooled third fluid; and   a fluid discharge pipeline, wherein the first fluid outlet of the first fluid collector of the heat exchanger is directly or indirectly connected to the fluid discharge pipeline,   wherein the mixer comprises a fluid temperature and flow regulator, wherein the inlet of said mixer is directly or indirectly connected to the second fluid outlet of the heat exchanger and the third fluid source for mixing the second fluid discharged from the second fluid outlet after heat exchange and the pre-heated or pre-cooled third fluid from the third fluid source and regulating temperature and flow thereof for use, and the mixed fluid becomes the first fluid to enter the opening of the first fluid collector,   wherein the opening of the first fluid collector of the heat exchanger takes in the first fluid after use wherein the temperature of said first fluid is higher than or lower than the temperature of the second fluid, so that the first fluid undergoes heat exchange with the second fluid flowing through the plurality of heat exchange tubes of the second fluid flow guide, and the temperature of the second fluid is increased or decreased, the second fluid is discharged from the second fluid outlet, wherein the first fluid is discharged to the fluid discharge pipeline via the first fluid outlet after heat exchange.