Heat Exchanger

Abstract

A heat exchanger comprises a plurality of heat exchange tubes inserted into a cleaning device. The cleaning device has the effect of movably scraping the dirt or dust accumulated in an outer side of each heat exchange tube, and a watering device is provided for spraying water to lower the temperature of the heat exchange tubes and to clean the heat exchange tubes. The cleaning device cooperates with the watering device to scrap the dirt or dust accumulated in the heat exchange tubes, clean and lower the temperature of the heat exchange tubes, so as to prevent the dirt or dust from being accumulated in the heat exchange tubes, improve the radiating effect of the heat exchange tubes and save the energy.

1 . A heat exchanger, comprising:
 a plurality of parallel heat exchange tubes;   a cleaning device for insertion of and moving the heat exchange tubes, the cleaning device having a moving board, a plurality of scraping members and at least two blocking boards, the moving board being defined with a plurality of penetrated receiving holes for receiving the scraping members and insertion of the heat exchange tube, the blocking boards being fixed to both sides of the moving board, each blocking board being defined with a plurality of through holes corresponding to the receiving holes of the moving board, and a diameter of the through holes of each blocking board being smaller than that of the receiving holes of the moving board, such that the scraping members being restricted by the blocking boards.   
   
   
       2 . The heat exchanger as claimed in  claim 1 , wherein in a center of each scraping member is defined a through hole for insertion of the heat exchange tube. 
   
   
       3 . The heat exchanger as claimed in  claim 1 , wherein both ends of each heat exchange tube are inserted into a front positioning board and a rear positioning board, respectively. 
   
   
       4 . The heat exchanger as claimed in  claim 1 , wherein an upper portion of the heat exchange tubes is disposed with a watering device having an inlet pipe, the inlet pipe is connected to a plurality of watering pipes, a blocking cover wraps a periphery of each watering pipe and is defined with an opening faced to the heat exchange tubes, and each watering pipe is defined with a plurality of spraying holes. 
   
   
       5 . The heat exchanger as claimed in  claim 4 , wherein the inlet pipe of the watering device is parallel to the heat exchange tubes, the watering pipes connected to the inlet pipe are vertical to the heat exchange tubes, and an end of each watering pipe is disposed with a water-stop cover. 
   
   
       6 . The heat exchanger as claimed in  claim 1 , wherein the moving board of the cleaning device is driven by a driving assembly, the driving assembly is disposed at a rear positioning board and is provided with a motor device and a sprocket assembly, the motor device rotates the sprocket assembly, the sprocket assembly comprises a gear for driving the moving board, a plurality of chains and a plurality of pulleys. 
   
   
       7 . A heat exchanger, comprising:
 a plurality of parallel heat exchange tubes, both ends of each exchange tube being disposed at a front positioning board and a rear positioning board, respectively;   a watering device being disposed at an upper portion of the heat exchange tubes and having an inlet pipe parallel to the heat exchange tubes, the inlet pipe being vertically disposed with a plurality of watering pipes towards the heat exchange tubes, a reserve U-shaped blocking cover wrapping a periphery of each watering pipe, an opening of the reserve U-shaped blocking cover being faced to the heat exchange tubes, each watering pipe being defined with a plurality of spraying holes adjacent to both sides of the blocking cover, and an end of each watering pipe being disposed with a water-stop cover.   
   
   
       8 . The heat exchanger as claimed in  claim 7 , wherein the heat exchange tubes are inserted into a cleaning device, the cleaning device moves on the heat exchange tubes and comprises a moving board and a plurality of scraping members, the moving board is defined with a plurality of receiving holes for receiving the scraping members. 
   
   
       9 . The heat exchanger as claimed in  claim 8 , wherein in a center of each scraping member is defined a through hole for insertion of the heat exchange tube, blocking boards are fixed to both sides of the moving board and are provided for restricting the scraping members, each blocking board is defined with a plurality of through holes corresponding to the receiving holes of the moving board, and a diameter of the through holes of each blocking board is smaller than that of the receiving holes of the moving board. 
   
   
       10 . The heat exchanger as claimed in  claim 8 , wherein the moving board of the cleaning device is driven by a driving assembly, the driving assembly is disposed at a rear positioning board and is provided with a motor device and a sprocket assembly, the motor device rotates the sprocket assembly, the sprocket assembly comprises a gear for driving the moving board, a plurality of chains and a plurality of pulleys. 
   
   
       11 . A heat exchanger, comprising:
 a plurality of parallel heat exchange tubes, both ends of each exchange tube being disposed at a front positioning board and a rear positioning board, respectively;   a cleaning device for insertion of the heat exchanger having a moving board, a plurality of scraping members and at least two blocking boards, the moving board being defined with a plurality of penetrated receiving holes for receiving the scraping members, in a center of each scraping member is defined a through hole for insertion of the heat exchange tube, the blocking boards being fixed to both sides of the moving board, each blocking board being defined with a plurality of through holes corresponding to the receiving holes of the moving board, a diameter of the through holes of each blocking board being smaller than that of the receiving holes of the moving board, such that the scraping members being restricted by the blocking boards;   a watering device being disposed at an upper portion of the heat exchange tubes and having an inlet pipe parallel to the heat exchange tubes, the inlet pipe being vertically disposed with a plurality of watering pipes towards the heat exchange tubes, a reserve U-shaped blocking cover wrapping a periphery of each watering pipe, an opening of the reserve U-shaped blocking cover being faced to the heat exchange tubes, each watering pipe being defined with a plurality of spraying holes adjacent to both sides of the blocking cover, and an end of each watering pipe being disposed with a water-stop cover.   
   
   
       12 . The heat exchanger as claimed in  claim 11 , wherein the moving board of the cleaning device is driven by a driving assembly, the driving assembly is disposed at a rear positioning board and is provided with a motor device and a sprocket assembly, the motor device rotates the sprocket assembly, the sprocket assembly comprises a gear for driving the moving board, a plurality of chains and a plurality of pulleys.