Abstract:
The present invention improves the conventional applications for the cold heat absorbing device or hot heat release device to have the single flow circuit flow direction functioning structure for periodic positive and reverse directional pumping thereby timely improving the temperature distribution between the fluid and the heat absorbing/release device, and reducing the disadvantages of impurity accumulation in fixed flow direction.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    (a) Field of the Invention 
         [0002]    The present invention improves the conventional applications for the cold heat absorbing device or hot heat release device to have the single flow circuit flow direction functioning structure for periodic positive and reverse directional pumping thereby timely improving the temperature distribution between the fluid and the heat absorbing/release device, and reducing the disadvantages of impurity accumulation in fixed flow direction. 
         [0003]    (b) Description of the Prior Art 
         [0004]      FIG. 1  is a main structure block schematic view of the conventional single flow circuit flow pumping device in fixed flow direction being applied in the cold heat absorbing device or hot heat release device; as shown in  FIG. 1 , the fluid is pumped in the fluid port at the side of different temperature space and discharged out of the fluid port at another side of different temperature space by the fluid pumping device ( 120 ) usually in fixed flow direction, and as the fluid flow direction is fixed, the temperature difference distribution gradient inside cold heat absorbing device or hot heat release device is unchanged. 
       SUMMARY OF THE INVENTION 
       [0005]    The present invention discloses that the conventional cold heat absorbing device or hot heat release device having pumping fluids at fixed flow directions is made to have the single flow-circuit heat exchange device for periodic positive and reverse directional pumping thereby obtaining the following advantages: 1) it is through the periodic positive and reverse pumping fluid in different flow directions in heat exchange applications to change the internal temperature difference conditions of cold heat absorbing device or hot heat release device being operated for heat absorbing and release functions thereby promoting the heat exchange efficiency; 2) The impurities brought in by the fluid flow at previous flow direction are discharged by the single flow circuit periodic positive and reverse directional pumping fluid thereby reducing the disadvantages of impurity accumulations at fixed flow direction. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0006]    FIG . 1  is a schematic view showing structural principles of the conventional cold heat absorbing device or hot heat release device. 
           [0007]      FIG. 2  is the first schematic view showing operating principles of the single flow circuit heat absorbing/release device for periodic positive and reverse directional pumping of the present invention. 
           [0008]      FIG. 3  is the second schematic view showing structure principles of the single flow circuit heat exchange device having the fluid bidirectional pumping device ( 123 ) being constituted by two unidirectional fluid pumps in different flow pumping directions. 
       
    
    
     DESCRIPTION OF MAIN COMPONENT SYMBOLS 
       [0000]    
       
           100 : Cold heat absorbing device or hot heat release device 
           120 : Fluid pumping device in fixed flow direction 
           123 : Bidirectional fluid pumping device 
           250 : Periodic fluid direction-change operative control device ( 250 ) 
         a, b: Fluid port 
       
     
       DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0014]    For the single flow circuit heat absorbing/release device for periodic positive and reverse directional pumping of the present invention, the conventional cold heat absorbing device or hot heat release device is installed with the bidirectional fluid pumping device ( 123 ) for periodic positive and reverse directional pumping, and the periodic fluid direction-change operative control device ( 250 ) for operatively controlling the bidirectional fluid pumping device ( 123 ) so as to allow the fluid originally pumped in fixed flow direction appear periodically alternative flow directional change, wherein: 
         [0015]    The bidirectional fluid pumping device ( 123 ): It is constituted by 1) the fluid pumping device capable of producing positive pressure to push fluid; 2) the fluid pumping device capable of producing negative pressure to attract fluid; or 3) the fluid pumping device having both functions of producing positive pressure to push fluid and negative pressure to attract fluid for pumping gaseous or liquid state fluids, wherein the fluid pump is driven by electric motor, engine power, or mechanical or electric power converted from other wind power, thermal energy, temperature-difference energy, or solar energy, etc; 
         [0016]    According to above said definitions on operating functions, the selectable embodiments of said bidirectional fluid pumping device ( 123 ) include the following: 
         [0017]    1. It is by adopting a bidirectional pumping fluid pump to suck and discharge the fluid, wherein flow direction of the fluid is periodically changed by periodically operating the pump in positive or reverse direction; or 
         [0018]    2. It is constituted by at least unidirectional fluid pumps of different pumping directions in series connection to constitute bidirectional fluid pumping device ( 123 ) for periodically alternatively pumping to periodically exchange the fluid flow direction; or 
         [0019]    3. It is constituted by two unidirectional pumps of different pumping directions in parallel connection for periodic alternatively pumping to periodically exchange the fluid flow directions, wherein if the pumps has no static anti-reverse flow characteristics, they can be respectively series connected with an unidirectional valve to avoid reverse flow; therefore the two pumps of different pumping directions are alternatively pumped to periodically exchange the fluid flow directions; or 
         [0020]    4. It is constituted by at least one unidirectional flow pump and four controllable switch type fluid valves in bridge type combination, wherein the fluid flow direction is periodically changed by alternatively operatively control two fluid valves to open and the other two fluid valves to close; 
         [0021]    The periodic fluid direction-change operative control device ( 250 ): It is constituted by electromechanical components, solid state electronic components, or microprocessors and relevant software and operative control interfaces to operatively control the bidirectional fluid pumping device ( 123 ) for periodically changing the flow direction of the fluid passing through cold heat absorbing device or hot heat release device thereby operatively controlling the temperature difference distribution status between fluid and heat exchanger inside the cold heat absorbing device or hot heat release device; 
         [0022]    The timing for fluid periodic flow direction change can be 1) the open loop type operative control by presetting the direction-change period of fluid flow, or 2) the closed loop type operative control by detecting the temperature difference between fluid and heat exchanger at setting locations for periodic closed loop fluid flow direction change timing operative control; or 3) randomly manual change. 
         [0023]      FIG. 2  is the first schematic view showing operating principles of the single flow circuit heat absorbing/release device for periodic positive and reverse directional pumping of the present invention, wherein the fluid in cold heat absorbing device or hot heat release device is operated for periodic pumping directional change, such as that as shown in  FIG. 3  for the example of the heat dispenser for heat release to indoors in cold winter times, wherein the indoor higher temperature air flow is pumped to the hot heat release device via fluid port (a) and is discharged via fluid port (b) by the bidirectional pumping device ( 123 ), the hot heat release device is then gradually formed with a temperature distribution from high temperature at fluid port (a) to the lower temperature at fluid port (b), and the pumping direction of the bidirectional pumping device ( 123 ) is further operatively controlled manually or by the periodic fluid direction-change operative control device ( 250 ) to pump the fluid in reverse direction, wherein the higher temperature fluid is pumped to the hot heat release device via fluid port (b) and is discharged via fluid port (a), and hot heat release device is then gradually formed with a temperature distribution from lower temperature at fluid port (b) to gradually rise to the higher temperature at fluid port (a), so that temperature distribution status on the hot heat release device is changed by the periodic positive and reverse directional pumping fluid; 
         [0024]    Further, the bidirectional fluid pumping device ( 123 ) of the single flow circuit heat exchange device for periodic positive and reverse directional pumping can be selected to be constituted by two unidirectional fluid pumps having different pumping direction in series connection to constitute the function of bidirectional fluid pumping device ( 123 ). 
         [0025]      FIG. 3  is the second schematic view showing structure principles of the single flow circuit heat exchange device having the bidirectional fluid pumping device ( 123 ) being constituted by two unidirectional fluid pumps in different flow pumping directions, wherein the fluid inside the cold heat absorbing device or hot heat release device is operatively controlled for periodically alternative pumping directional change, such as that as shown in  FIG. 3  for the example of the heat dispenser for heat release to indoors in cold winter times, wherein the indoor higher temperature air flow is pumped to hot heat release device via fluid port (a) and is discharged via fluid port (b) by the bidirectional fluid pumping device ( 123 ), the hot heat release device is then gradually formed with a temperature distribution from high temperature at fluid port (a) to the lower temperature at fluid port (b), and the pumping direction of the bidirectional fluid pumping device ( 123 ) is further operatively controlled manually or by the periodic fluid direction-change operative control device ( 250 ) to pump the fluid in reverse direction; wherein the fluid of higher temperature fluid is pumped to the hot heat release device via fluid port (b) and is discharged via fluid port (a), and the hot heat release device is then gradually formed with a temperature distribution from lower temperature at fluid port (b) to the higher temperature at fluid port (a), so that temperature distribution status on the hot heat release device is changed by the periodic positive and reverse directional pumping fluid. 
         [0026]    The cold heat absorbing device or hot heat release device of the single flow circuit heat absorbing/release device for periodic positive and reverse directional pumping is embodied to have the following characteristics: 1) it is of the tubular structure in linear or other geometric shapes; 2) it is constituted by the multi-layer structure having fluid path for passing gaseous or liquid state fluids; or 3) it is constituted by one or more than one fluid path in series connection, parallel connection or series and parallel connection.