Abstract:
Disclosed is a liquid cooling radiation system. The technical solution used by the present invention to solve the technical problem is: the liquid cooling radiation system comprises: a radiation device, comprising cooling pipes and a radiation structure device arranged on the cooling pipes; a pumping device, integrally arranged between the cooling pipes and generating power so that a coolant circulates within the cooling pipes; a heat absorption device, attached to a heating device and having a heat conduction effect with the heating device; a pipeline, used for connecting the radiation device and the heat absorption device. On the basis of existing products, the present invention utilises a solution wherein a liquid pump main body and a radiator are integrally arranged together. Thus, the radiation of a fan is used to take away heat on the radiator and heat generated by a pump power main body (i.e. a motor) itself is also taken away, thereby extending the service life of the motor. In addition, the occupied space is significantly reduced, the heat transfer effect is significantly improved, and the production and assembly costs are reduced, so that product assembly is convenient and efficiency is high.

Description:
BACKGROUND OF THE PRESENT INVENTION 
     Field of Invention 
       [0001]    The present invention relates to a liquid cooling system, and more particularly to a liquid cooling system which includes a pump body integrally arranged inside a heat dissipating arrangement. 
       Description of Related Arts 
       [0002]    At present, water-cooled radiators are commonly used as the cooling devices for cooling down devices such as computer CPU, graphic cards, chips of electronic equipment and are basically consist of three major components, which are heat absorbing device, pumping power device and heat dissipating device. The three components are connected to form a closed loop for liquid circulation in which the heat absorbing device is connected to the heat dissipating device while the pumping power device provides power to liquid circulation in the loop. The drawback of this design is that the three components are assembled and affixed by external connection through connecting pipes, thus a relatively large space is utilized and its installation and operation is inconvenience. In view of the relatively high installation requirement for space and poor flexibility in installation, its application is very limited. Patent number 200580050009.2 is targeted at solving the present problem and provides a cooling system for computer system which incorporates a heat exchange interface, a liquid storage compartment and a pump as one part of an integrated component, of which the pump is superimposed on the heat absorbing device. This integration arrangement will lead to the heat absorbing device having a size which is not suitable for fitting into the small space, the pumping device which is arranged on top of the heat absorbing arrangement will be easily affected by the high temperature and resulted in damage, thus its lifespan is affected. At present, the position of the pumping power device in this kind of heat dissipating device is unreasonable, resulting in low work efficiency of the pumping power, thus making the cooling effect unsatisfactory and the service life is limited. 
       SUMMARY OF THE PRESENT INVENTION 
       [0003]    An object of the present invention is to solve the technical problem, in view of the above-mentioned drawbacks in the existing arts, by providing a liquid cooling system and a radiator unit for application on the liquid cooling system. 
         [0004]    According to the present invention, the foregoing and other objects and advantages are attained by a liquid cooling system, characterized in that, the system comprises: 
         [0005]    a heat dissipating device, which comprises cooling tubes and a radiator structure arrangement on the cooling tubes, 
         [0006]    a pumping device, integrally mounted between the cooling tubes to generate power for circulation of coolant inside the cooling tubes; 
         [0007]    a heat absorbing device attaching to a heat-generating component and arranged for heat conduction with the heat-generating component; 
         [0008]    a tube unit which connects between the heat dissipating device and the heat absorbing device. 
         [0009]    The system further comprises a liquid chamber which contains a predetermined amount of coolant, that the coolant is arranged for accumulating and transmitting the heat dissipated to the coolant from the heat-generating component, the liquid chamber is provided to at least one end of the cooling tube of the heat dissipating device; the pumping device comprises a pump chamber and a pump power body, at least one of the cooling tube inlet and the cooling tube outlet is connected to one of the two ends of the pump chamber, the pump power body pumps out the coolant from the cooling tube outlet to circulate through the cooling tube. 
         [0010]    The liquid chamber is positioned at one side of the cooling tube, a partition panel for liquid partition is mounted integrally inside the liquid chamber to divide the liquid chamber into an inlet chamber and an outlet chamber, wherein the cooling tubes connect to the inlet chamber and the outlet chamber, wherein the inlet chamber has an inlet port and the outlet chamber has an outlet port, wherein the tubes connect to the inlet port and the outlet ports respectively and to the heat absorbing device. 
         [0011]    The liquid chamber is divided into a top liquid chamber and a bottom liquid chamber which are positioned at two sides of the tube unit respectively, wherein the top liquid chamber has a partition panel for liquid partition therein to divide the liquid chamber into an inlet chamber and an outlet chamber, wherein the cooling tubes are divided into an inlet cooling tube and an outlet cooling tube which connect to the bottom liquid chamber through the inlet chamber and the outlet chamber respectively. 
         [0012]    There are N number of inlet cooling tubes which are aligned in a side-by-side manner and are disconnected together at one section to define a window in such a manner that N number of inlet cooling tube openings are formed side-by-side at a top side and a bottom side of the window, wherein the pump chamber has N number of inlet openings and outlet openings corresponding to the window such that the pump chamber is connected to the inlet cooling tube openings at the top side and the bottom side in a sealed manner through the N number of inlet openings and outlet openings, wherein a number of the outlet cooling tubes is M, where M&gt;N&gt;=1 (N is an integer), and the M number of outlet cooling tubes are arranged in a side-by-side manner and positioned at two sides of the inlet cooling tubes. 
         [0013]    The pump power body comprises a motor and a power fan blade, the power fan blade is fan blade with silicon steel sheet and has a shaft of stainless steel, the heat dissipating device has one lateral side at which a fan is arranged, the fan driving an airflow for lowering a temperature of the heat dissipating device and facilitating heat dissipation. 
         [0014]    The heat dissipating device is a set of heat dissipating sheet, the heat dissipating sheets are mounted on the outer side of the cooling tubes through coupling and fixing into position by soldering or by soldering onto the cooling tubes directly. 
         [0015]    The heat absorbing device comprises a bottom plate for heat exchange and a coolant chamber, wherein the bottom plate for heat exchange and the coolant chamber are connected and sealed through a sealing ring. 
         [0016]    The bottom plate for heat exchange is made of metal materials, which include alloyed copper, aluminum, aluminum alloy or alloy steel; the bottom plate for heat exchange has an inner bottom surface which has a groove structure construction such that the coolant in the coolant chamber is endlessly close to the heat-generating components. 
         [0017]    The system includes cooling tubes and a radiator structure arrangement on the cooling tubes, a pumping device which comprises a pump chamber and a pump power body arranged inside the pump chamber, the pump chamber is integrally mounted between the cooling tubes, the pump power body generates power for circulation of coolant inside the cooling tubes; a liquid chamber connected therethrough and contains a predetermined amount of coolant, that the coolant is arranged for accumulating and transmitting the heat dissipated to the coolant from the heat-generating component, the liquid chamber is provided to at least one end of the cooling tube of the heat dissipating device, or the pump chamber is also utilized as a liquid chamber. 
         [0018]    The present invention is based on the existing product and employs an integral arrangement of the pump body and the heat dissipating device. In this way, the pump body is positioned in the middle of the radiator unit. The fan for heat dissipation not only is used to bring away the heat from the radiator, but also to bring away the heat generated from the pump power device. Accordingly, the motor life is prolonged. Also, the space requirement is greatly reduced. The pump body is connected to four inlet and eight outlet cooling tubes, which greatly increases the heat exchange effect. The power fan blades has five fan blades with a silicon steel sheet surrounded inside and a shaft of stainless steel employed. The shaft of stainless steel provides simple processing, lower cost and durable, so that the resulting product has performance stability. Accordingly, this not only increases the strength of the bearing, but also solves the wearing problem of the central axis and bushing caused by the impeller bearing working in the water for a long time, thus greatly reducing the noise of the product and providing a very superior balancing effect, thus the lifespan is greatly increased. The cost of manufacture and assembly is also reduced. Therefore, the product assembly is convenience and efficient, and the cost can be controlled. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0019]    In order to more clearly illustrate the technical solution of the embodiments of the present invention, the followings briefly described the drawings accompanying the description of embodiments. It will be apparent that the following drawings are merely exemplary embodiments of the present invention. For person of ordinary skill in the art, under the premise of non-creative work, other drawings can also be obtained based on these drawings. In the drawings: 
           [0020]      FIG. 1  is an exploded view of the product according to a preferred embodiment of the present invention; 
           [0021]      FIG. 2  is a structural illustration of a radiator unit according to a preferred embodiment of the present invention; 
           [0022]      FIG. 3  is an illustration of an internal structure of a top water chamber according to a preferred embodiment of the present invention; 
           [0023]      FIG. 4  is an A-A cross-sectional view of  FIG. 2 ; 
           [0024]      FIG. 5  is an illustration of a radiator unit, illustrating the structure when its bottom water chamber is not connected according to a preferred embodiment of the present invention; 
       
    
    
       [0025]    In conjunction with the accompanying drawings:  1 -water-pump cover locking screw,  2 -water-pump cover,  3 -water-pump holder locking screw,  4 -water-pump stator,  5 -water-pump holder,  6 -water-pump sealing ring,  7 -water-pump rotor,  8 -water-pump body,  9 -main panel unit of water-pump chamber,  10 -water-pump chamber,  11 -window,  12 -radiator unit,  13 -radiator fill hole,  14 -fan,  15 -fan locking screw,  16 -silicon casing tube,  17 -tube,  18 -tube connector,  19 -water-cooled head chamber,  20 -water-cooled head LED decoration unit,  21 -sealing ring for tube connector,  22 -connector locking screw,  23 -sealing ring for water-cooled head chamber,  24 -copper plate for heat absorption,  25 -copper plate screw,  26 -pump chamber,  30 -top water chamber,  31 -water inlet port,  32 -water outlet port,  33 -fill port,  34 -harmonica-shaped tube,  35 -main side panel for fan mounting,  36 -bottom water chamber,  37 -soldered fin,  38 -water-pump chamber,  39 -brazed fin,  40 -partition panel. 
       DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0026]    In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the various embodiments are further described with the accompanying drawings in the followings. These drawings figures form a part of the embodiment, wherein the embodiment in which the present invention may be realized is described. It is to be understood that other embodiments may be used, or structural and functional modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. 
         [0027]    According to  FIG. 1  of the drawings, an exploded view of the product as a whole according to a preferred embodiment of the present invention is illustrated; in conjunction with  FIG. 1  and according to this embodiment, water is used as the coolant, the entire liquid cooling system comprises a fan  14 , a radiator unit  12 , a water pump body, a tube unit  17 , a water-cooled head body, wherein the radiator unit  12  comprises a top water chamber  30 , a bottom water chamber  36 , as shown in  FIG. 2 , a partition panel welded inside the top water chamber  30  to divide the top water chamber into water inlet chamber and water outlet chamber, a water inlet port  31  and a water outlet port  32  are provided on the water inlet chamber and water outlet chamber respectively, a fill port  33  is arranged on a body of the water outlet chamber. According to this embodiment, the water inlet chamber is positioned in the middle portion of the top water chamber, the fill port  33  is channel through the water outlet  32 . Four flattened and harmonica-shaped tubes  34  which are arranged side by side are connected to the water inlet chamber to form an inlet cooling tube for connecting to the bottom liquid chamber, while eight harmonica-shaped tubes  34  on two sides of the bottom liquid chamber are used to form an outlet cooling tube and are positioned side by side on two sides of the inlet cooling tubes, with four tubes on one side, then through connecting to the bottom water chamber to the water outlet chamber. In this way, the water inlet port  31  is connected to and channel through the water outlet port through connecting to the harmonica-shaped tubes  34  with four inlets and eight outlets to form a loop. In addition, fins for heat dissipation are arranged on the external side of the harmonica-shaped tubes. As shown in  FIG. 2  and  FIG. 1  of the drawings, according to this embodiment, the inlet cooling tube is disconnected in a middle section to form a window  36 , and four tube openings of the harmonica-shaped tubes  34  which are arranged side by side are provided on each of a top side and a bottom side of the window  36 . The water-pump chamber  10  has a top end opening and a bottom end opening which are welded and connected to a main panel unit of water-pump chamber  9 . On the main panel unit of water-pump chamber  9 , connecting ports which are complementary to the harmonica-shaped tubes are provided and are connected to the openings of the harmonica-shaped tubes on the top side and the bottom side at the disconnected portion through sealed brazing. In this embodiment, there are four corresponding connecting ports. The water-pump chamber  10  has a side opening. The water-pump chamber  10  and the main panel unit of water-pump chamber  9  are constructed into a pump chamber  26 . Referring to  FIG. 1  of the drawings, an installation process of the power pumping body is: a water-pump stator  4  is pressed to the inside of a water-pump holder  5  by using jig and fixture, a water-pump rotor  7  has a plurality of blades and five blades are used (of course, seven or nine blades can also be used in other embodiments) in which a silicon steel sheet is winded inside and a shaft of stainless steel is employed; the water-pump rotor  7  is placed in the axial hole of the water-pump holder  5  and then placed inside the water-pump body  8  so that a water-pump stator body is formed; then place them together in the water-pump chamber  10  which is positioned on top of the radiator unit, put on a water-pump sealing ring  6  and put on water-pump screws for locking at one time, then use electric or manual screwdriver to lock into position; and then cover a water-pump cover  2  on top of the power pumping body which is locked into position, finally, sequentially put on water-pump cover screws  1  and lock into position and sealing the side opening of the water-pump chamber  10 ; the entire structure and size of the pump chamber  26  is complement to the window  36 , the pump chamber  26  and the power pumping body form the entire structure of the pumping device. After installation in this way, the entire pumping device is integrated completely into the radiator unit to form an integral structure, which is shown in  FIG. 2 . 
         [0028]    Again, referring to  FIG. 1  of the drawings, two tubes  17  are connected to tube connectors  18  respectively, a sealing ring for tube connector  21  is connected to one end of the tube connector  18 , then a silicon casing tube  16  is coupled to the other end of each of the two tubes  17  such that a connecting tube body is formed, lastly, the two tube bodies are connected to the water inlet port  31  and the water outlet port  32  respectively by using fixtures such that the tube bodies are connected to the assembled radiator unit. The other end of the tube body is connected to water-cooled head body, the water-cooled head body comprises a water-cooled head chamber  19 , a sealing ring for water-cooled head chamber  23  is coupled to the sealing grooves on the water-cooled head chamber  19 , a copper plate for heat absorption  24  is put on top of the sealing ring for water-cooled head chamber  23  and copper plate screws  25  are put on at one time and locks into position, and finally, a water-cooled head LED decoration unit  20  is installed on top of the water-cooled head chamber  19 ; tube connectors  18  are linked to connecting holes on one side of the water-cooled head chamber  19  and lock into position by connector locking screws  22  such that an integrated circulating water loop is formed. Fan locking screws  15  is used to lock the fan  14  on the radiator unit  12  to assemble the integrated water cooling system. 
         [0029]    Referring to  FIG. 3  of the drawings, an internal structure of a top water chamber according to a preferred embodiment of the present invention is illustrated. The partition panel  40  is provided in the middle portion inside the top water chamber  30  to divide the top water chamber  30  into a water inlet chamber and a water outlet chamber, the water inlet port  31  is provided on an outer side of the water inlet chamber which is in the middle portion of the water inlet chamber, a water outlet port  32  and a fill port  33  are provided on the two sides of the water outlet chamber respectively, the entire top water chamber  30  is sealed and welded together with the cooling tubes. 
         [0030]      FIG. 4  is a cross-sectional view taken along the line A-A in  FIG. 2 . The harmonica-shaped tube  34  has a flattened structure, the four harmonica-shaped tubes  34  in the middle are sealed and connected to the pump chamber  26 , the coolant flows to the water-pump chamber  38  and is pumped out through the power pumping body. Here, the brazed fins  39  is employed in this embodiment. The fins for heat dissipation employs brazing to connect between the harmonica-shaped tubes. Two main side panels for fan mounting  35  are provided at the two outermost sides respectively. 
         [0031]      FIG. 5  is an illustration of a radiator unit when the bottom water chamber is not connected. As shown in the figure, there are a total of twelve (12) harmonica-shaped tubes  34 , four of the tubes are connecting from the top water chamber  30 , through the pump chamber  26 , to the bottom water chamber, then from the four harmonica-shaped tubes which are aligned side by side on each of the two sides to return to the water outlet chamber to complete the loop. In  FIG. 5 , the fins for heat dissipation employs wavy soldered fins  37  coupled to the outer side of the harmonica-shaped tubes  34 . The two outermost sides employ main side panels for fan mounting  35  for securing the radiator into position and externally connecting the fan. 
         [0032]    According to the cross-sectional view taken along the line A-A′ in  FIG. 2  of the present invention, in summary, the power pumping body comprises a motor and a power fan blades, the power fan blades has five fan blades with a silicon steel sheet surrounded inside and a shaft of stainless steel is employed. The shaft of stainless steel provides simple processing, lower cost and durable, so that the resulting product has performance stability. Accordingly, this does not only increases the strength of the bearing, but also solving the wearing problem of the central axis and bushing caused by the impeller bearing working in the water for a long time, thus greatly reducing the noise of the product and providing a very superior balancing effect, which is a good way to improve the performance of the motor. With the use of physical centripetal force and centrifugal force, the shaft is placed in the pump holder  5  and hence the lifespan of the water-pump body is greatly extended. The water-pump stator  4  is winded by six-pole coil, which greatly increasing the performance of the motor while reducing the volume and size of the motor. 
         [0033]    The copper plate for heat absorption  24  in the water-cooled head body employs the latest groove-cutting style copper base and is capable of using other metal materials such as alloyed copper, aluminum, aluminum alloy, alloy steel and etc. The inner bottom surface of the bottom plate for heat exchange adopts a groove structure so that the coolant in the coolant chamber is endlessly close to the heat-generating devices, thus bringing away the heat from the heat-generating devices effectively. 
         [0034]    In order to realize the above liquid-cooled radiator unit used in the liquid cooling system, this embodiment utilizes water as the coolant. Of course, other liquid which has the effect of coolant can also be used. For examples, sealed liquid nitrogen and etc. can also be used. According to this embodiment, the water inlet chamber is positioned at the middle portion in the top water chamber while the fill port  33  and the water outlet  32  are channel through, and this is not a fixed arrangement and other arrangements can also be workable. For example, their position can be arranged in one side of the radiator unit. The harmonica-shaped tube connected to the water inlet chamber can also have another shape, or the number of harmonica-shaped tube can be one or more than one provided that the number of tubes connecting to liquid-cooled outlet tubes is not smaller than that of liquid-cooled inlet tubes. Of course, it is also possible to have a smaller number of tubes as long as the entire loop of coolant is realized because the thickness of the tubes can be varied and the flow rate of the coolant can be varied. In the present preferred embodiment, the number of liquid-cooled outlet tubes is two times of the number of liquid-cooled inlet tubes while the liquid-cooled outlet tubes are positioned at the two sides of the liquid-cooled inlet tubes. 
         [0035]    The above is a specific embodiment of the present invention. In the embodiment, amongst the fan  14 , the radiator unit  12 , the water-pump body, the tubes and the water-cooled head body in the entire liquid cooling system, the fan provides a faster cooling effect to the radiator unit  12 . However, in the absence of fan, the present system is still workable. In the structure of the radiator unit  12 , only one of the top water chamber and the bottom water chamber is required and can be defined as a water chamber, which can be located at one side of the cooling tube. As long as a water outlet port and a water inlet port is provided on the water chamber, and the water chamber is connected to the water-cooled head body such that the heat dissipating to the water from the heat generating component is accumulated and conveyed, that at this point the water pump body can be positioned at any section of the cooling tube to provide power for the cooling water to circulate inside the cooling tubes. However, if water chamber is arranged on a top and a bottom of the radiator and the pump chamber is connected to one-way flowing cooling tubes, it is necessary to disconnect all the cooling tubes with one-way flowing and connect to two sides of the pump chamber so as to ensure that the system circulates under the power provided by the pump. 
         [0036]    It is obvious that in the above embodiment, the tube body is the tube unit. The length of the tube unit can be determined according to the actual product installation space, or can be as short as direct connection between the water-cooled head body and the radiator unit. Under certain space requirement, the water chamber can be substituted by the pump chamber directly and the tubes are directly connected to the two ends of the cooling tubes to form a water loop for circulation. The product based on the present invention can be very small in size in accordance with the space requirements of the electronic product. For examples, in its application on all-in-one computer, it requires only a very small space. 
         [0037]    The liquid cooling system of the present invention provides superior heat dissipation to the heat-generating devices and is capable of preventing leakage at the tube connector, which can greatly enhance the lifespan of the pump body, lower the cost and reduce the existing problem of electromagnetic noise from the motor. 
         [0038]    The present invention is based on the existing product and employs an integral arrangement of the pump device and the radiator unit. The present invention includes the fan for heat dissipation to bring away the heat from the radiator, at the same time, the heat generated from the pump power device is also blown away by the fan. Accordingly, the motor life is prolonged and the space requirement is greatly reduced. The pump device is connected to four inlet and eight outlet cooling tubes, which greatly increases the heat exchange effect. The cost of manufacture and assembly is reduced. Therefore, the product assembly is convenience and efficient, and the cost can be controlled. 
         [0039]    One skilled in the art will understand that the embodiment of the present invention as shown in the drawings and described above is exemplary only and not intended to be limiting. It will thus be seen that the objects of the present invention have been fully and effectively accomplished. It embodiments have been shown and described for the purposes of illustrating the functional and structural principles of the present invention and is subject to change without departure from such principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the following claims.