TW202120806A - Liquid cooling system and series-connected pump thereof - Google Patents

Abstract

A liquid cooling system and a series-connected pump are provided to solve the problem that the stator of the conventional pump needs to be separated from the rotor. The series-connected pump of the invention can be used to drive electrically non-conductive liquid. The pump includes a housing having a liquid inlet and a liquid outlet intercommunicating with the interior thereof, and a plurality of fans series-connected and mounted in the housing. Each fan includes a fan frame having a liquid injection hole and a liquid outgoing hole. A driving member is mounted in the liquid chamber and drives an impeller of each fan to rotate, such that the fans jointly drive the electrically non-conductive liquid to flow into the housing via the liquid injection hole. The electrically non-conductive liquid flows through the liquid injection hole and the liquid outgoing hole and discharges from the liquid outlet of the housing.

Description

Liquid-cooled heat dissipation system and its series pump

The present invention relates to a pump and liquid-cooled heat dissipation system for driving liquid flow, in particular to a series pump with non-conductive liquid flowing inside, and a liquid-cooled heat dissipation system with the series pump.

Please refer to FIG. 1, which is a conventional pump 9. The conventional pump 9 has a housing 91, a rotor group 92 and a stator group 93. The shell 91 is composed of a shell base 911 and a shell cover 912, and a liquid flow space 913 is formed between the inside of the shell base 911 and the shell cover 912. The housing 91 further has an input port 914 and an output port 915 communicating with the liquid flow space 913, and the bottom end of the housing 911 has a shaft connection portion 916. The rotor assembly 92 is located in the liquid flow space 913. The rotor assembly 92 has an impeller 921 rotatably disposed on the shaft connection portion 916, and a magnet ring 922 is coupled with the impeller 921 and is located on the outer periphery of the shaft connection portion 916. The stator assembly 93 is combined with the housing base 911 and is located outside the liquid flow space 913, and the stator assembly 93 is diametrically opposed to the magnet ring 922 via the housing base 911. When the conventional pump 9 is operating, the magnetic field generated by the stator assembly 93 can penetrate the housing 911 and magnetically repel the magnet ring 922, thereby driving the impeller 921 to rotate, so that liquid can pass through the input port 914 It flows into the liquid flow space 913, and is guided and discharged from the outlet 915. An embodiment similar to the conventional pump 9 has been disclosed in the Republic of China Patent Publication No. 587784.

The above-mentioned conventional pump 9 needs to prevent the stator group 93 from contacting liquid and short-circuit, so the stator group 93 is chosen to be placed outside the liquid flow space 913 to ensure that the liquid is guided in and out of the liquid flow space 913. No liquid will contact the stator assembly 93. However, this arrangement requires the housing base 911 to be separated between the stator assembly 93 and the magnet ring 922, which makes it difficult to reduce the magnetic sensing distance between the two, which affects the driving performance. In addition, the conventional pump 9 can only pressurize the liquid in a single stage, which is still difficult for applications with higher pressurization requirements.

In view of this, the conventional pump does still have to be improved.

In order to solve the above-mentioned problems, the purpose of the present invention is to provide a liquid-cooled heat dissipation system and its series pump, which can pressurize non-conductive liquid in multiple stages by several guide fans to increase the hydraulic pressure leaving the series pump.

The second objective of the present invention is to provide a liquid-cooled heat dissipation system and its series pump, which can use non-conductive liquid so that the stator and rotor of each guide fan can be located in the same space without isolation , So that the magnetic induction distance between the stator and the rotor can be reduced.

Another object of the present invention is to provide a liquid-cooled heat dissipation system and its series pump, which can directly apply a guide fan for driving the flow of gas to the series pump to drive non-conductive liquid, so that the guide The structure of the flow fan may not be different due to the driving gas or liquid.

Another object of the present invention is to provide a series pump, which can improve the smoothness and efficiency of non-conductive liquid delivery.

The full text of the present invention defines the relationship between any two adjacent diversion fans based on the flow direction of the non-conductive liquid, and it is called the "previous diversion fan" that the non-conductive liquid passes through first, and the "next diversion fan" that the non-conductive liquid passes after. Fan"; that is, the non-conductive fluid flows out from the "previous diversion fan" and then flows into the "next diversion fan".

The directionality described in the full text of the present invention or its similar terms, such as "front", "rear", "left", "right", "up (top)", "down (bottom)", "inner", "outer" , "Side", etc., mainly refer to the directions of the attached drawings, and the terms of directionality or similar terms are only used to assist in the description and understanding of the embodiments of the present invention, and are not intended to limit the present invention.

The elements and components described in the full text of the present invention use the quantifiers "one" or "one" for convenience and to provide the general meaning of the scope of the present invention; in the present invention, it should be construed as including one or at least one, and single The concept of also includes the plural, unless it clearly implies other meanings.

Approximate terms such as "combination", "combination" or "assembly" mentioned in the full text of the present invention mainly include the types that can be separated without destroying the components after being connected, or the components cannot be separated after being connected, which are common knowledge in the field Those can be selected based on the materials of the components to be connected or assembly requirements.

The tandem pump of the present invention is used to drive the flow of non-conductive liquid, comprising: a housing with a liquid flow space inside, the housing having a liquid injection port and a liquid discharge port connected to the liquid flow space; and a plurality of guides The flow fans are arranged in series in the liquid flow space, each of the guide fans has a fan frame, the fan frame has a liquid inlet and a liquid outlet, and a driving component is located in the liquid flow space and can be driven An impeller located in the fan frame rotates to jointly guide the non-conductive liquid from the liquid injection port of the casing into the liquid flow space, and after flowing through the liquid inlet and the liquid outlet of each fan frame, from the casing The drain port flows out.

The liquid-cooled heat dissipation system of the present invention includes: a series pump as described above; a heat absorption unit; a heat dissipation unit; a non-conductive liquid; and a tube set connected in series with the series pump, the heat absorption unit and the The heat dissipation unit is used for circulating the non-conductive liquid during the operation of the series pump.

Accordingly, the liquid-cooled heat dissipation system and its series pump of the present invention can pressurize the non-conductive liquid in multiple stages by several guide fans to increase the hydraulic pressure leaving the series pump, so it can be based on the pressure demand Choosing the number of guide fans in the tandem pump can be suitable for liquid-cooled heat dissipation systems with various pressurization requirements, and has the effect of improving practicability. In addition, because the liquid-cooled heat dissipation system uses non-conductive liquid as the working liquid, the stator and rotor of the guide fan in the series pump can be located in the same space without isolation, and will not operate during operation. The problem of short circuit occurs; in this way, the magnetically sensitive distance between the stator and the rotor of the guide fan will be reduced, which can improve the efficiency of the stator to drive the rotor to rotate, and help reduce the volume of the overall series pump. In addition, since the stator and rotor of the guide fan in the series pump do not need to be isolated, the guide fan used to drive the flow of gas can be directly applied to the series pump to drive the non-conductive liquid. The structure of the guide fan may not be different due to the driving gas or liquid, so the industry does not need to make another guide fan with a specific structure in order to drive the flow of the liquid, which has the effect of reducing manufacturing and storage management costs.

Wherein, there may be a guide element between any two adjacent guide fans, the guide part is located in the liquid flow space, and the guide part may have an inclined surface facing the previous guide fan. In this way, the diversion member can guide the flow direction of the non-conductive liquid, so that the non-conductive liquid can flow into the next diversion fan more smoothly after flowing out of the previous diversion fan, and has the functions of improving the smoothness of the flow of the non-conductive liquid.

Wherein, the liquid flow space may have at least one pressing portion abutting against the fan frame, and the pressing portion may have a flow guide surface parallel to the inclined surface of the flow guide member. In this way, it has the effects of improving the smoothness of the flow of the non-conductive liquid.

Wherein, the outer shell may be formed by a first shell and a second shell that are combined to form the liquid flow space, one end of the fan frame may abut the first shell, and at least one pressing portion may be connected to the second shell and Abutting the other end of the fan frame, the pressing portion may not cover the liquid inlet and the liquid outlet of the fan frame. In this way, the plurality of guide fans can be more stably arranged in the predetermined position inside the housing, and the pressing part can also limit the flow range of the non-conductive liquid together with the corresponding drainage member, and reduce the occurrence of non-conductive liquid backflow. Under the condition, it has the effect of improving the efficiency of diversion of non-conductive liquid.

Wherein, the outer shell may be combined with a first shell and a second shell to jointly form the liquid flow space, the first shell may have a base, the peripheral edge of the base may be connected to a ring wall, and the second shell may There are two opposite current-limiting walls, the two current-limiting walls can extend into the space enclosed by the ring wall, and the liquid injection port and the liquid discharge port can be aligned between the two current-limiting walls. In this way, most of the non-conductive liquid flowing into the liquid flow space can flow between the two current limiting walls, which has the effects of improving the diversion efficiency of the non-conductive liquid.

Wherein, the outer shell may be formed by a first shell and a second shell that are combined to form the liquid flow space. The first shell may have a base, and the inner surface of the base may have a plurality of limiting grooves. The fan frames of each guide fan can be respectively placed in the corresponding limit grooves. In this way, it has the functions of improving the convenience of assembly and the stability of the combination of the plurality of guide fans and the casing.

Wherein, the drive assembly may not be waterproofed. In this way, it has the effect of reducing manufacturing costs.

Wherein, the driving assembly may have a plurality of circuit substrates, the plurality of circuit substrates are respectively located in the plurality of fan frames, and each of the circuit substrates may have a certain sub-coil group and a plurality of electronic components. In this way, the components arranged in each of the fan frames can be assembled in advance. When assembling the tandem pump, only the several fan frames need to be aligned and assembled into the predetermined places in the housing, which improves the ease of assembly. And other effects.

Wherein, the driving assembly may have several electronic components, and the several electronic components may not be located in the several fan frames. In this way, it has the effect of reducing the axial height of each guide fan.

Wherein, the drive assembly may have a circuit substrate connected to the inner surface of the housing, each fan frame has a side wall that can abut against the inner surface of the housing or the circuit substrate, and the drive assembly may have a plurality of stator coil assembly wiring It is formed on the circuit substrate, and the plurality of stator coil groups can be respectively located in the plurality of fan frames. In this way, it has the effect of reducing the axial height of each guide fan.

Wherein, the inner surface of the housing may be provided with a containing groove, and the circuit substrate is accommodated in the containing groove. In this way, it has the effects of reducing the axial height of the overall casing.

Wherein, the plurality of guide fans can be inverted at intervals. In this way, it has the effects of improving the smoothness of the non-conductive liquid delivery.

In order to make the above and other objectives, features and advantages of the present invention more comprehensible, the following describes the preferred embodiments of the present invention in conjunction with the accompanying drawings in detail as follows:

Please refer to Figure 2, which is a preferred embodiment of the liquid-cooled heat dissipation system of the present invention, which includes a series pump P, a heat absorption unit 1, a heat dissipation unit 2 and a pipe fitting group 3. The pipe fittings Group 3 is connected in series with the series pump P, the heat absorption unit 1 and the heat dissipation unit 2, so that non-conductive liquids with a dielectric strength of not less than 30kV (such as electronic engineering liquids and other liquids with good fluidity but no conductivity) can be circulated flow.

In detail, the tube assembly 3 can be connected to the tandem pump P and the heat absorption unit 1 by a tube 3a, and the heat absorption unit 1 can be attached to a heat source H of an electronic device, for example; the tube assembly 3 can also be connected by A tube 3b connects the series pump P and the heat dissipation unit 2, and a tube 3c connects the heat absorption unit 1 and the heat dissipation unit 2; the series pump P and the tube assembly 3 contain non-conductive liquid. Accordingly, the non-conductive liquid in the pipe assembly 3 and located at the heat absorption unit 1 can absorb heat energy to increase the temperature, and is guided to the heat dissipation unit 2 by the operation of the tandem pump P, so as to pass the heat dissipation When the unit 2 is cooled down, it will be guided to the heat absorption unit 1 again after cooling down; in this way, the heat source H can be effectively cooled down.

Wherein, the present invention does not limit the types of the heat absorption unit 1 and the heat dissipation unit 2, nor does it limit the circulation direction of the non-conductive liquid; that is, the non-conductive liquid after the temperature rises can flow through the tandem pump P and then It is guided to the heat dissipation unit 2 (circulate in a clockwise direction as shown in Figure 2) or reversely, so that the cooled non-conductive liquid flows through the series pump P and then is directed to the heat absorption unit 1.

Please refer to Figures 2 and 3, which is the first embodiment of the tandem pump P of the present invention. It includes a housing 4 and a plurality of guide fans 5 located in the housing 4, and the housing 4 can be used for the aforementioned The pipe fitting group 3 is assembled and connected so that the non-conductive liquid can flow into the housing 4 and be pumped out by the plurality of guide fans 5 under pressure.

Referring to FIGS. 3 and 4, the housing 4 has a liquid flow space 41 inside, and the housing 4 has a liquid injection port 42 and a liquid discharge port 43 to connect the liquid flow space 41 with the outside. The present invention does not limit the type of the shell 4; in this embodiment, the shell 4 may have a first shell 44 and a second shell 45, the first shell 44 and the second shell 45 may be plastic or metal The first shell 44 and the second shell 45 can be combined to form the liquid flow space 41 together.

For example, but without limitation, the first shell 44 may be a rectangular shell with an open upper end, that is, the first shell 44 has a base 441, a ring wall 442 is connected to the periphery of the base 441, and the liquid injection port 42 And the liquid discharge port 43 can be optionally provided at two opposite ends of the ring wall 442 for the aforementioned pipe fitting set 3 (marked in Figure 2) to pass through; or, preferably, as shown in the figure, connected to the ring wall The ports of the two pipes 443 of the 442 form the liquid injection port 42 and the liquid discharge port 43 to improve assembly convenience and leakage prevention effect when connecting with the pipe assembly 3. Wherein, the two pipes 443 can be integrally formed and connected with the ring wall 442, or can be assembled and combined with the ring wall 442 in a liquid-tight manner. In addition, the inner surface 441a of the base 441 may also have a plurality of limiting grooves 444 to facilitate the positioning of the plurality of guide fans 5 when assembling.

The second shell 45 may be generally plate-shaped, the lower surface of the second shell 45 may have two opposite current limiting walls 451, and two adjacent ends of the two current limiting walls 451 may respectively have a bump 452. . The second shell 45 can cover the upper end of the first shell 44 to close the opening formed by the top end of the ring wall 442. When the second shell 45 and the first shell 44 are made of metal, the second shell 45 The end edge joined with the first shell 44 can be combined by laser welding, and the liquid flow space 41 is formed in the interior of the first shell 44 and the second shell 45 together. Wherein, the two restriction walls 451 can extend into the space enclosed by the ring wall 442, and the liquid injection port 42 and the liquid discharge port 43 are aligned between the two restriction walls 451 to allow the liquid flow to flow into Most of the non-conductive liquid in the space 41 can flow between the two restricting walls 451; the two protrusions 452 can be located in the middle of the liquid injection port 42 and the liquid discharge port 43, and the two convex The block 452 does not completely shield the liquid injection port 42 and the liquid discharge port 43, so that when the non-conductive liquid passes through the liquid injection port 42 and the liquid discharge port 43, it can be divided by the two protrusions 452 to achieve the rectification effect. Improve the smoothness of the flow of non-conductive liquid.

In addition, there may be a diversion member 46 between any two adjacent diversion fans 5, and the diversion member 46 is located in the liquid flow space 41 to guide the flow direction of the non-conductive liquid, so that the non-conductive liquid is guided from the previous one. After the flow fan 5 flows out, it can flow into the next guide fan 5 more smoothly. In this embodiment, the drainage element 46 can be selectively connected to the base 441 of the first shell 44 and located between any two adjacent limiting grooves 444; the drainage element 46 can have an inclined surface 461 facing the previous one. The guide fan 5, the guide member 46 may have an elevation 462 approximately perpendicular to the base 441 facing the next guide fan 5. The casing 4 may further have at least one pressing portion 47 for pressing the plurality of guide fans 5 so that the plurality of guide fans 5 can be more stably arranged at predetermined positions inside the casing 4. For example, but without limitation, the pressing portion 47 of this embodiment can be connected to the second shell 45, and can be selected as a transverse protrusion provided between the two current limiting walls 451. In addition, the pressing portion 47 approximately corresponds to the drainage member 46, and the pressing portion 47 may have a diversion surface 471 parallel to the inclined surface 461 of the drainage member 46 to improve the smoothness of guiding the flow of the non-conductive liquid.

In order to pressurize the non-conductive liquid in multiple stages, the plurality of guide fans 5 are arranged in series, and the number of the guide fans 5 can be selected according to the degree of pressure required. In this embodiment, three are selected. A guide fan 5 is presented as an example, but not limited to this. Wherein, each of the guide fans 5 has a fan frame 51, the fan frame 51 has a liquid inlet 511 and a liquid outlet 512, a driving assembly 52 is located in the liquid flow space 41 of the housing 4, and can be driven in An impeller 53 in the fan frame 51 rotates so that the non-conductive liquid can flow into the fan frame 51 from the liquid inlet 511 and then flow out from the liquid outlet 512. In this embodiment, the guide fan 5 can be selected as a centrifugal fan type, that is, the fan frame 51 has a bottom plate 513, the bottom plate 513 has a shaft connection portion 514, and a side wall 515 is connected to the bottom plate 513 and is located on the shaft. On the outer periphery of the connecting portion 514, a top cover 516 is connected to the top end of the side wall 515, the liquid inlet 511 is located on the top cover 516, and the liquid outlet 512 is located on the side wall 515.

During installation, the fan frames 51 of the plurality of guide fans 5 can be respectively inserted into the corresponding limit grooves 444 in the first housing 44, and the liquid outlet 512 of one of the guide fans 5 is connected to the housing 4. Preferably, the liquid discharge port 43 directly faces the liquid discharge port 43, and the liquid outlets 512 of the remaining diversion fans 5 face the corresponding diversion members 46, so that the liquid inlet 511 of the next diversion fan 5 can be the same as the previous one. The liquid outlet 512 of the guide fan 5 is in communication; and after the second shell 45 is covered, there may be a gap between the second shell 45 and the liquid inlets 511 of the plurality of guide fans 5, so as to be closest to the The liquid inlet 511 of the guide fan 5 of the liquid injection port 42 of the housing 4 is connected to the liquid injection port 42. Wherein, the pressing portion 47 of the housing 4 can be pressed against the top cover 516 of the fan frame 51, and the pressing portion 47 preferably does not cover the liquid inlet 511 and the liquid outlet 512 of the fan frame 51, so as not to block it. The flow of the non-conductive liquid, and the pressing portion 47 can also limit the flow range of the non-conductive liquid together with the corresponding drainage member 46, so that the non-conductive liquid flowing out of the liquid outlet 512 is not easy to flow back to the liquid inlet 511.

Referring to FIGS. 3 and 5, the driving assembly 52 of this embodiment may include a plurality of circuit substrates 521 to be respectively arranged in the plurality of fan frames 51, and each circuit substrate 521 has a certain sub-coil group 522, The stator coil assembly 522 is preferably formed on the circuit substrate 521 in a wiring manner to reduce the axial height. Each circuit substrate 521 may also include electronic components 523 such as Hall sensors and driver ICs. Among them, since the working liquid flowing through the liquid flow space 41 is a non-conductive liquid when the series pump P is operating, the driving component 52 can be selected without water-proof treatment, which will not only prevent short-circuit conditions, but also Reduce manufacturing costs.

The impeller 53 located in each fan frame 51 may include a hub 531, which is rotatably connected to the shaft portion 514 of the fan frame 51, several blades 532 are connected to the hub 531, and a magnetic member 533 is connected to the hub. 531 is opposite to the stator coil group 522. After the drive assembly 52 is energized, the magnetic field generated by the stator coil assembly 522 can magnetically repel the magnetic member 533, thereby pushing the hub 531 to drive the plurality of blades 532 to rotate synchronously, so that the non-conductive liquid can pass through the liquid inlet 511 flows into the fan frame 51 and then flows out from the liquid outlet 512.

Please refer to Figures 2 and 4, according to the aforementioned structure, when the liquid-cooled heat dissipation system with series pumps of this embodiment operates, the non-conductive liquid located at the heat absorption unit 1 can absorb heat energy, so that the The temperature of the conductive liquid rises. When the tandem pump P is operating, by discharging the non-conductive liquid originally in the liquid flow space 41 of the housing 4, the liquid flow space 41 can be made to form a negative pressure to introduce the high temperature from the heat absorption unit 1 Conductive liquid; after the high-temperature non-conductive liquid flows into the liquid flow space 41 through the liquid injection port 42 of the housing 4, it can first flow into the fan frame 51 from the liquid inlet 511 of the guide fan 5 closest to the liquid injection port 42 After being pressurized by the impeller 53, it flows out from the liquid outlet 512 of the guide fan 5, and rises along the slope 461 of the corresponding guide fan 46, so as to smoothly flow into the liquid inlet 511 of the next guide fan 5. In this way, after flowing through the liquid inlet 511 and the liquid outlet 512 of each fan frame 51, the high-temperature non-conductive liquid can undergo multi-stage pressurization and be guided from the liquid discharge port 43 closest to the housing 4 The liquid outlet 512 of the flow fan 5 flows out, and finally leaves the housing 4 through the liquid outlet 43 and is guided to the heat dissipation unit 2. The high-temperature non-conductive liquid can cool down when passing through the heat dissipation unit 2, and then be guided to the heat absorption unit 1 again after cooling; in this way, the heat source H at the heat absorption unit 1 can effectively cool down.

Please refer to Figures 6 and 7, which is the second embodiment of the tandem pump of the present invention. In this embodiment, the drive assembly 52 of each guide fan 5 can move its electronic parts 523 to the housing The other positions in 4 are not located in the fan frame 51, which helps to reduce the axial height of each guide fan 5. Preferably, the fan frame 51 of each guide fan 5 can also omit the bottom plate 513 (marked in Figure 5), so as to further reduce the axial height of each guide fan 5 and help reduce the overall housing The axial height of 4. In detail, the shaft connecting portion 514 of each fan frame 51 can be connected to the base 441 of the first shell 44, and the plurality of guide fans 5 can also share a circuit substrate 521, and the circuit substrate 521 is provided with wiring A plurality of stator coil groups 522 are formed in a manner, and the shaft connection portion 514 of each fan frame 51 penetrates the circuit board 521, so that the plurality of stator coil groups 522 are respectively arranged around the outer periphery of each shaft connection portion 514; The side wall 515 of the frame 51 can abut the circuit board 521 or the inner surface 441a of the base 441 of the housing 4. In addition, the first shell 44 can also be provided with a recess 445 on the inner surface 441a of the base 441 for the circuit board 521 to be received in the recess 445, which also helps to reduce the axial height of the overall housing 4.

Please refer to Figure 8, which is the third embodiment of the tandem pump of the present invention. In this embodiment, the plurality of guide fans 5 can be selected to be inverted at intervals to improve the conduction of the non-conductive liquid. Delivery smoothness; for example, in an embodiment with three guide fans 5, you can choose to invert the second guide fan 5 from the liquid injection port 42 of the housing 4, or invert the second guide fan 5 from the housing 4 The liquid injection port 42 is counted as the first and third guide fans 5. In detail, taking the second guide fan 5 inverted as an example, the guide member 46 adjacent to the liquid outlet 512 of the first guide fan 5 can be changed to be connected to the second shell 45, so that The non-conductive liquid flowing out of the liquid outlet 512 of the diversion fan 5 can be guided by the inclined surface 461 of the diversion member 46, and flows directly from the lower end to the liquid inlet 511 of the second diversion fan 5, and flows from the second diversion fan 5 to the liquid inlet 511. The non-conductive liquid flowing out of the liquid outlet 512 of the diversion fan 5 can flow directly from the upper end to the liquid inlet 511 of the third diversion fan 5 to improve the smoothness of the non-conductive liquid. Among them, the non-conductive liquid flowing out from the liquid outlet 512 of the first guide fan 5 can also be subjected to the inclined surface 461 of the guide member 46 to reduce the flow passage cross-section before flowing into the second guide fan 5 to increase the flow velocity and dynamics. Press to achieve a better pressurizing effect.

Please refer to Figure 9, which is the fourth embodiment of the tandem pump of the present invention. In this embodiment, the housing 4 can be configured with the liquid injection port of the housing 4 according to the configuration requirements of the liquid-cooled heat dissipation system. 42 and the liquid discharge port 43 are selected on the adjacent two sides of the ring wall 442, and the liquid flow space 41 of the housing 4 can still be separated by a single diversion channel by several drainage elements 46 and other structures, so that the non-conductive liquid can be Follow the direction of the arrow in the figure to sequentially pass the pressure of the plurality of guide fans 5 and then discharge without interfering with each other in the liquid flow space 41.

In summary, the liquid-cooled heat dissipation system and its tandem pump of the present invention can pressurize the non-conductive liquid in multiple stages by several guide fans to increase the hydraulic pressure leaving the tandem pump. The number of guide fans in the series pump is selected for pressure requirements, which can be applied to various liquid-cooled heat dissipation systems with pressure requirements, and has the effect of improving practicability. In addition, because the liquid-cooled heat dissipation system uses non-conductive liquid as the working liquid, the stator and rotor of the guide fan in the series pump can be located in the same space without isolation, and will not operate during operation. The problem of short circuit occurs; in this way, the magnetic induction distance between the stator (the stator coil group of the aforementioned drive assembly) and the rotor (the aforementioned magnetic part of the impeller) of the guide fan will be reduced, which can improve the stator to drive the rotor The efficiency of the rotation, and helps to reduce the volume of the overall tandem pump.

It is worth mentioning that since the stator and rotor of the guide fan in the series pump do not need to be isolated, the guide fan used to drive the gas flow can be directly applied to the series pump to drive the The conductive liquid makes the structure of the guide fan not different due to the driving gas or liquid, so the industry does not need to make a special structure of the guide fan in order to drive the flow of the liquid, which has the effect of reducing manufacturing and storage management costs.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone who is familiar with the art without departing from the spirit and scope of the present invention may make various changes and modifications relative to the above-mentioned embodiments. The technical scope of the invention is protected. Therefore, the scope of protection of the invention shall be subject to the scope of the attached patent application.

﹝this invention﹞ 1: Heat absorption unit 2: Cooling unit 3: Pipe fitting group 3a, 3b, 3c: pipe fittings 4: shell 41: Liquid flow space 42: Liquid injection port 43: Drainage port 44: The first shell 441: Base 441a: inner surface 442: Ring Wall 443: Catheter 444: Limit Groove 445: Socket 45: second shell 451: Current Limiting Wall 452: bump 46: Drainage parts 461: Slope 462: Facade 47: press 471: Diversion Surface 5: Diversion fan 51: fan frame 511: Liquid inlet 512: Liquid Outlet 513: bottom plate 514: Shaft joint 515: side wall 516: top cover 52: drive components 521: Circuit Board 522: Stator coil group 523: Electronic Parts 53: impeller 531: Wheel Hub 532: blade 533: magnetic parts H: heat source P: Tandem pump ﹝Used ﹞ 9: Pump 91: shell 911: Shell seat 912: shell cover 913: Liquid Flow Space 914: input port 915: output port 916: Shaft joint 92: Rotor group 921: Impeller 922: Magnet Ring 93: stator group

[Figure 1] A sectional view of a combination of conventional pumps. [Figure 2] Architecture diagram of the liquid-cooled heat dissipation system of the present invention. [Figure 3] An exploded perspective view of the tandem pump according to the first embodiment of the present invention. [Figure 4] The combined side sectional view of the tandem pump according to the first embodiment of the present invention. [Picture 5] A cross-sectional view along the line A-A in Fig. 4. [Figure 6] The combined side sectional view of the tandem pump according to the second embodiment of the present invention. [Picture 7] A cross-sectional view along the line B-B in Fig. 6. [Figure 8] The combined side sectional view of the tandem pump according to the third embodiment of the present invention. [Figure 9] A top view of the tandem pump according to the fourth embodiment of the present invention.

4: shell

42: Liquid injection port

43: Drainage port

44: The first shell

441: Base

441a: inner surface

442: Ring Wall

443: Catheter

444: Limit Groove

45: second shell

451: Current Limiting Wall

452: bump

46: Drainage parts

461: Slope

462: Facade

47: press

471: Diversion Surface

5: Diversion fan

51: fan frame

511: Liquid inlet

512: Liquid Outlet

53: impeller

Claims (13)

A series pump used to drive the flow of non-conductive liquid, including: A housing with a liquid flow space inside, the housing having a liquid injection port and a liquid discharge port communicating with the liquid flow space; and Several guide fans are arranged in series in the liquid flow space, each guide fan has a fan frame, the fan frame has a liquid inlet and a liquid outlet, and a drive assembly is located in the liquid flow space It can also drive an impeller located in the fan frame to rotate to jointly guide the non-conductive liquid from the liquid injection port of the casing into the liquid flow space, and after flowing through the liquid inlet and the liquid outlet of each fan frame, It flows out from the drain port of the housing. The tandem pump described in item 1 of the scope of patent application, wherein there is a diversion member between any two adjacent diversion fans, the diversion member is located in the liquid flow space, and the diversion member has an inclined surface facing forward A diversion fan. As described in item 2 of the scope of the patent application, wherein, the liquid flow space has at least one pressing portion abutting the fan frame, and the pressing portion has a flow guide surface parallel to the guide member Incline. The tandem pump described in item 1 of the scope of patent application, wherein the casing is formed by a first casing and a second casing that are combined to form the liquid flow space, and one end of the fan frame abuts against the first casing At least one pressing portion is connected to the second shell and abuts against the other end of the fan frame, and the pressing portion does not cover the liquid inlet and the liquid outlet of the fan frame. The tandem pump described in item 1 of the scope of patent application, wherein the casing is formed by a first casing and a second casing that are combined to form the liquid flow space, the first casing has a base, and the base is A ring wall is connected to the periphery of the ring, the second shell has two opposite flow restricting walls, the two restricting walls extend into the space enclosed by the ring wall, and the liquid injection port and the liquid discharge port are aligned on the two Between current limiting walls. The tandem pump described in item 1 of the scope of patent application, wherein the casing is formed by a first casing and a second casing that are combined to form the liquid flow space, the first casing has a base, and the base is The inner surface is provided with a plurality of limiting grooves, and the fan frames of the plurality of guide fans are respectively placed in the corresponding limiting grooves. The tandem pump described in item 1 of the scope of patent application, wherein the driving component is not waterproofed. The series pump described in the first item of the scope of patent application, wherein the driving component has a plurality of circuit substrates, the plurality of circuit substrates are respectively located in the plurality of fan frames, and each circuit substrate has a certain sub-coil group And several electronic parts. The tandem pump described in item 1 of the scope of patent application, wherein the driving assembly has a plurality of electronic components, and the plurality of electronic components are not located in the plurality of fan frames. The tandem pump described in item 7 of the scope of patent application, wherein the driving component has a circuit substrate connected to the inner surface of the housing, and each fan frame has a side wall abutting against the inner surface of the housing or the circuit A substrate, the driving assembly has a plurality of stator coil groups wired and formed on the circuit substrate, and the plurality of stator coil groups are respectively located in the plurality of fan frames. According to the tandem pump described in item 10 of the scope of patent application, wherein a cavity is provided on the inner surface of the housing, and the circuit substrate is accommodated in the cavity. The series pump described in item 1 of the scope of patent application, wherein the plurality of guide fans are inverted at intervals. A liquid-cooled heat dissipation system, including: The tandem pump as described in any one of items 1 to 12 in the scope of the patent application; A heat absorption unit; A heat dissipation unit; A non-conductive liquid; and A tube set is connected in series with the series pump, the heat absorption unit and the heat dissipation unit, so that the non-conductive liquid circulates when the series pump is operating.

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