Liquid cooling heat dissipation structure and magnetic levitation pump

Abstract

The utility model relates to a kind of liquid cooling heat dissipation structure and magnetic suspension pump, comprising: liquid cooling stick, liquid cooling stick is formed with the liquid cooling channel for liquid flow, liquid cooling stick lower end is formed with inlet and outlet respectively, and liquid cooling channel both ends are connected with inlet and outlet respectively, and liquid cooling stick is formed with the vent hole passing through the upper end and lower end of liquid cooling stick.The utility model liquid cooling stick inserts axial through-hole, utilizes the original machine shell structure of magnetic suspension pump motor part to dissipate heat, directly dissipates heat from the axial through-hole in the machine shell interior to the inside of machine shell temperature higher, reduces the temperature of machine shell and internal element;Liquid cooling stick is fixed with machine shell by connecting mechanism, so as to adapt to existing magnetic suspension pump;Vent hole connects the space above and below liquid cooling stick, balances air pressure, reduces the difficulty when installing and disassembling liquid cooling stick;Vent hole simultaneously ventilates first groove, balances the air pressure difference between first groove and outside, reduces the difficulty when installing and disassembling pump head.

Description

Technical Field

[0001] This utility model relates to the field of magnetic levitation pump heat dissipation, and in particular to a liquid cooling heat dissipation structure and a magnetic levitation pump. Background Technology

[0002] In the field of precision fluid transport, contactless pump technology has attracted much attention to avoid wear and lubrication contamination of mechanical bearings. Existing magnetic levitation pumps integrate drive and levitation functions, achieving stable rotor levitation and rotation by using torque windings and levitation force windings in the stator and generating radial force through controllable magnetic field imbalance. However, existing magnetic levitation pumps have high stator heat generation inside the casing, which is passively dissipated only through axial through-holes within the casing, resulting in low heat dissipation efficiency and high internal casing temperatures, which is detrimental to the stable operation of the magnetic levitation pump. Utility Model Content

[0003] The present invention aims to solve the above problems by providing a liquid cooling heat dissipation structure and a magnetic levitation pump, thereby solving the aforementioned problems.

[0004] A liquid cooling structure includes: a liquid cooling rod, wherein the liquid cooling rod forms a liquid cooling channel for liquid flow, an inlet and an outlet are formed at the lower end of the liquid cooling rod, the two ends of the liquid cooling channel are respectively connected to the inlet and the outlet, and a vent hole is formed through the upper and lower ends of the liquid cooling rod.

[0005] Preferably, the vent is located inside the liquid cooling rod, the liquid cooling channel is a groove located on the outer side of the liquid cooling rod, the liquid cooling rod has an inlet channel and an outlet channel formed inside, the two ends of the liquid cooling channel are connected to the inlet channel and the outlet channel respectively, the inlet channel is connected to the inlet port, and the outlet channel is connected to the outlet port.

[0006] Preferably, the outer surface of the liquid cooling rod is a cylindrical surface, the liquid cooling channel is a spiral groove around the cylindrical surface of the liquid cooling rod, the lower end of the liquid cooling channel is connected to the liquid inlet channel, and the upper end of the liquid cooling channel is connected to the liquid outlet channel.

[0007] Preferably, it also includes a connection structure for fixing and detachably connecting the liquid cooling rod to the housing of the magnetic levitation motor of the magnetic levitation pump.

[0008] A magnetic levitation pump using the aforementioned liquid cooling heat dissipation structure includes a magnetic levitation motor and a pump head. A first groove is formed on the upper part of the housing of the magnetic levitation motor. The pump head is inserted into the first groove and fixedly and detachably connected to the magnetic levitation motor. An axial through hole is formed inside the housing of the magnetic levitation motor, and a liquid cooling rod is inserted into the axial through hole and fixedly and detachably connected to the housing of the magnetic levitation motor through a connecting structure.

[0009] Preferably, the connection structure includes a flange plate and a first bolt. The bottom outer side of the liquid cooling rod is integrally formed with the flange plate. The flange plate is located outside the axial through hole. The flange plate has multiple first through holes in the vertical direction. The first bolt is adapted to the first through hole and passes through the first through hole. The first bolt is threadedly connected to the housing of the magnetic levitation motor.

[0010] Preferably, it also includes a sealing ring, wherein the liquid cooling rod has annular grooves formed on the upper and lower sides of the liquid cooling channel, the sealing ring is fitted in the annular grooves, and the inner and outer sides of the sealing ring are respectively fitted to the liquid cooling rod and the axial through hole.

[0011] Preferably, it further includes an adapter block, which is located below the flange plate and fixed to and detachably connected to the flange plate. The adapter block is fixedly connected to the inlet pipe and the outlet pipe respectively. The adapter block has a first channel and a second channel formed inside it. The two ends of the first channel are connected to the inlet channel and the inlet pipe respectively, and the two ends of the second channel are connected to the outlet channel and the outlet pipe respectively.

[0012] Preferably, the inlet pipe is connected to the outlet of the water pump, the outlet pipe is connected to the return water tank, the return water tank is equipped with a heat dissipation device, and the inlet of the water pump is connected to the return water tank.

[0013] Preferably, it also includes a top cover, which covers the upper end of the axial through hole. The top cover is fixed in position to the housing of the magnetic levitation motor. A first gap is formed between the top of the top cover and the pump head, and a second gap is formed between the bottom of the top cover and the liquid cooling rod. The top cover has a top cover through hole, and the two ends of the top cover through hole are respectively connected to the first gap and the second gap. A limiting part is formed below the top cover to contact the upper end of the liquid cooling rod. The limiting part is used to prevent the upper end of the liquid cooling rod from entering the second gap.

[0014] This utility model has the following advantages: 1. The liquid cooling rod is inserted into the axial through hole, utilizing the original housing structure of the magnetic levitation pump motor for heat dissipation. It directly dissipates heat to the hotter inner side of the housing through the axial through hole inside the housing, reducing the temperature of the housing and internal components. The liquid cooling rod is fixed to the housing through the connecting mechanism, thus adapting to the existing magnetic levitation pump. 2. The liquid cooling channel of the liquid cooling rod is a spiral groove around the cylindrical surface. The spiral flow path can not only make the cooling range of the magnetic levitation pump shell on the outside of the liquid cooling rod more uniform, but also increase the flow path, increase the heat exchange time, and thus increase the heat exchange capacity. 3. The vent connects the space above and below the liquid cooling rod, balancing the air pressure and reducing the difficulty of installing and removing the liquid cooling rod; the vent also vents the first groove, balancing the air pressure difference between the first groove and the outside, reducing the difficulty of installing and removing the pump head. 4. The liquid cooling structure is detachably connected to the magnetic levitation pump via a connecting mechanism, allowing the magnetic levitation pump to choose whether or not to install the liquid cooling structure according to actual needs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0016] Figure 1 : A three-dimensional structural diagram of the liquid cooling heat dissipation structure (first-person perspective); Figure 2 : A three-dimensional structural diagram of the liquid cooling heat dissipation structure (second perspective); Figure 3 : Rear cross-sectional view of the liquid cooling structure; Figure 4 : Left sectional view of the liquid cooling structure; Figure 5 : A three-dimensional structural diagram of a magnetic levitation pump; Figure 6 : A top view of the magnetic levitation pump; Figure 7 :exist Figure 6 Schematic diagram of the cross-sectional structure at point AA; Figure 8 :exist Figure 6 Schematic diagram of the cross-sectional structure at point BB; Figure 9 :exist Figure 8 A magnified schematic diagram of the local structure at point C; Figure 10 : A three-dimensional structural diagram of a magnetic levitation motor. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and examples: The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1: like Figures 1 to 4 As shown, a liquid cooling structure includes: a liquid cooling rod 1, wherein the liquid cooling rod 1 forms a liquid cooling channel 10 for liquid flow, wherein the lower end of the liquid cooling rod 1 has a liquid inlet 11 and a liquid outlet 12 respectively, wherein the two ends of the liquid cooling channel 10 are respectively connected to the liquid inlet 11 and the liquid outlet 12, and wherein the liquid cooling rod 1 has a vent hole 15 penetrating the upper end and the lower end of the liquid cooling rod 1.

[0020] During operation, the coolant passes through the inlet 11, the liquid cooling channel 10, and the outlet 12 in sequence. In the liquid cooling channel 10, the coolant exchanges heat with the magnetic levitation pump, reducing the temperature of the magnetic levitation pump. The vent 15 balances the air pressure above and below the liquid cooling rod 1, avoiding difficulties in installation and disassembly due to the pressure difference between the upper and lower parts.

[0021] Optionally, the liquid cooling channel 10 is entirely located inside the liquid cooling rod 1. During operation, the coolant first exchanges heat with the liquid cooling rod 1 to cool it down, and then the liquid cooling rod 1 exchanges heat with the housing of the magnetic levitation pump it contacts, thus cooling the magnetic levitation pump. The cooling effect of the liquid cooling channel 10 being located inside the liquid cooling rod 10 is relatively poor, but it does not require sealing between it and the housing of the magnetic levitation pump.

[0022] Optionally, the vent 15 is located inside the liquid cooling rod 1, and the liquid cooling channel 10 is a groove located on the outer side of the liquid cooling rod 1. An inlet channel 13 and an outlet channel 14 are formed inside the liquid cooling rod 1. Both ends of the liquid cooling channel 10 are connected to the inlet channel 13 and the outlet channel 14, respectively. The inlet channel 13 is connected to the inlet port 11, and the outlet channel 14 is connected to the outlet port 12. During operation, the coolant can directly contact the housing of the magnetic levitation pump for heat exchange, resulting in better cooling. However, a liquid seal is required between the housing of the magnetic levitation pump and the liquid cooling channel 10.

[0023] Preferably, the outer surface of the liquid cooling rod 1 is cylindrical, and the liquid cooling channel 10 is a spiral groove surrounding the cylindrical surface of the liquid cooling rod 1. The lower end of the liquid cooling channel 10 is connected to the liquid inlet channel 13, and the upper end of the liquid cooling channel 10 is connected to the liquid outlet channel 14. The flow path of the coolant is spiral upward. The upward flowing liquid is affected by gravity, which can reduce the flow velocity, increase the heat exchange time, and increase the heat exchange capacity. At the same time, the spiral flow path can not only make the cooling amplitude of the magnetic levitation pump housing on the outer side of the liquid cooling rod 1 more uniform, but also increase the flow path, increase the heat exchange time, and thus increase the heat exchange capacity.

[0024] Preferably, the system further includes a connection structure for fixing and detachably connecting the liquid cooling rod 1 to the housing of the magnetic levitation motor 5 of the magnetic levitation pump. The connection structure can employ existing technologies such as threaded connections, snap-fit ​​connections, and flange connections.

[0025] Example 2: like Figures 1 to 10 As shown, a magnetic levitation pump using the liquid cooling structure of Embodiment 1 includes a magnetic levitation motor 5 and a pump head 6. A first groove is formed on the upper part of the housing of the magnetic levitation motor 5. The pump head 6 is inserted into the first groove and fixed and detachably connected to the magnetic levitation motor 5. An axial through hole 51 is formed inside the housing of the magnetic levitation motor 5, and the liquid cooling rod 1 is inserted into the axial through hole 51 and fixed and detachably connected to the housing of the magnetic levitation motor 5 through a connecting structure.

[0026] When the liquid cooling channel 10 is located on the outer side of the liquid cooling rod 1, the inner wall of the axial through hole 51 and the groove-shaped liquid cooling channel 10 together form a liquid flow channel. The coolant flows in the liquid flow channel and directly contacts the inner wall of the axial through hole 51 to exchange heat, thereby reducing the temperature of the axial through hole 51 and thus reducing the temperature of the internal components of the magnetic levitation motor 5.

[0027] If the liquid cooling rod 1 is fitted to the inner wall of the axial through hole 51, or if a sealing structure (such as a sealing ring 4) is used between the liquid cooling rod 1 and the axial through hole 51, when the liquid cooling rod 1 is pulled out from the axial through hole 51, the sealed space above the liquid cooling rod 1 gradually increases and the air pressure gradually decreases, causing the air pressure difference between the top and bottom of the liquid cooling rod 1 to gradually increase, making it difficult to pull out the liquid cooling rod 1. Similarly, when the liquid cooling rod 1 is inserted, the sealed space above the liquid cooling rod 1 gradually decreases and the air pressure gradually increases, causing the air pressure difference between the top and bottom of the liquid cooling rod 1 to gradually increase, making it difficult to insert the liquid cooling rod 1. Therefore, a vent hole 15 is provided to connect the space above and below the liquid cooling rod 1, balance the air pressure difference, and reduce the difficulty of inserting and pulling out the liquid cooling rod 1.

[0028] Preferably, the connection structure includes a flange plate 2 and a first bolt 21. The bottom outer side of the liquid cooling rod 1 is integrally formed with the flange plate 2. The flange plate 2 is located outside the axial through hole 51. The flange plate 2 has a plurality of first through holes in the vertical direction. The first bolt 21 is adapted to the first through hole and passes through the first through hole. The first bolt 21 is threadedly connected to the housing of the magnetic levitation motor 5.

[0029] Preferably, the system also includes a sealing ring 4. The liquid cooling rod 1 has annular grooves formed on both the upper and lower sides of the liquid cooling channel 10. The sealing ring 4 is fitted into these annular grooves, and its inner and outer sides respectively conform to the liquid cooling rod 1 and the axial through hole 51. The sealing ring 4 seals the liquid flow channel, preventing liquid from flowing out.

[0030] Preferably, the system further includes a transition block 3, which is located below the flange plate 2 and is fixed to and detachably connected to the flange plate 2. The transition block 3 is fixedly connected to the inlet pipe 31 and the outlet pipe 32 respectively. The transition block 3 has a first channel 33 and a second channel 34 formed inside it. The two ends of the first channel 33 are connected to the inlet channel 13 and the inlet pipe 31 respectively, and the two ends of the second channel 34 are connected to the outlet channel 14 and the outlet pipe 32 respectively.

[0031] Preferably, the inlet pipe 31 is connected to the outlet of the water pump, the outlet pipe 32 is connected to the return water tank, the return water tank is equipped with a heat dissipation device, and the inlet of the water pump is connected to the return water tank. The coolant circulates, absorbing heat in the liquid flow channel and dissipating heat in the return water tank.

[0032] Preferably, it also includes a second bolt 35, which passes through the adapter block 3 and is threadedly connected to the flange plate 2.

[0033] Preferably, the system also includes a top cover 7, which covers the upper end of the axial through hole 51. The top cover 7 is fixed in position to the housing of the magnetic levitation motor 5. A first gap 71 is formed between the top of the top cover 7 and the pump head 6, and a second gap 72 is formed between the bottom of the top cover 7 and the liquid cooling rod 1. The top cover 7 has a top cover through hole 74, and both ends of the top cover through hole 74 are connected to the first gap 71 and the second gap 72, respectively. A limiting part 73 is formed below the top cover 7 to contact the upper end of the liquid cooling rod 1. The limiting part 73 is used to prevent the upper end of the liquid cooling rod 1 from entering the second gap 72, thereby preventing the top cover 7 from completely blocking the vent hole 15, so that the vent hole 15 is connected to the second gap 72, and ensuring that the gas in the space above and below the liquid cooling rod 1 is connected. Through the first gap 71, the gas in the first groove can also communicate with the outside through the vent 15, avoiding the air pressure change caused by the change in the size of the sealing space between the pump head 6 and the first groove when installing and disassembling the pump head 6, and balancing the air pressure difference between the first groove and the outside; thus ensuring that the installation and disassembly of the pump head 6 are not affected by the air pressure difference, making the force required for installation and disassembly smaller.

[0034] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A liquid-cooled heat dissipation structure, characterized in that, include: A liquid cooling rod (1) is formed with a liquid cooling channel (10) for liquid flow. The lower end of the liquid cooling rod (1) is formed with an inlet (11) and an outlet (12). The two ends of the liquid cooling channel (10) are connected to the inlet (11) and the outlet (12) respectively. The liquid cooling rod (1) is formed with a vent hole (15) penetrating the upper and lower ends of the liquid cooling rod (1).

2. The liquid cooling heat dissipation structure according to claim 1, characterized in that: The vent (15) is located inside the liquid cooling rod (1). The liquid cooling channel (10) is a groove located on the outer side of the liquid cooling rod (1). The liquid cooling rod (1) has an inlet channel (13) and an outlet channel (14) respectively. The two ends of the liquid cooling channel (10) are connected to the inlet channel (13) and the outlet channel (14) respectively. The inlet channel (13) is connected to the inlet port (11), and the outlet channel (14) is connected to the outlet port (12).

3. The liquid cooling heat dissipation structure according to claim 2, characterized in that: The outer surface of the liquid cooling rod (1) is a cylindrical surface, and the liquid cooling channel (10) is a spiral groove around the cylindrical surface of the liquid cooling rod (1). The lower end of the liquid cooling channel (10) is connected to the liquid inlet channel (13), and the upper end of the liquid cooling channel (10) is connected to the liquid outlet channel (14).

4. A liquid cooling heat dissipation structure according to any one of claims 1 to 3, characterized in that: It also includes a connection structure for fixing and detachably connecting the liquid cooling rod (1) to the housing of the magnetic levitation motor (5) of the magnetic levitation pump.

5. A magnetic levitation pump using the liquid cooling structure as described in claim 4, comprising a magnetic levitation motor (5) and a pump head (6), wherein a first groove is formed on the upper part of the housing of the magnetic levitation motor (5), and the pump head (6) is inserted into the first groove and fixedly and detachably connected to the magnetic levitation motor (5), characterized in that: The housing of the magnetic levitation motor (5) has an axial through hole (51) that runs vertically through the inside. The liquid cooling rod (1) is inserted into the axial through hole (51) and is fixed and detachably connected to the housing of the magnetic levitation motor (5) through a connecting structure.

6. A magnetic levitation pump according to claim 5, characterized in that: The connection structure includes a flange plate (2) and a first bolt (21). The bottom outer side of the liquid cooling rod (1) is integrally formed with the flange plate (2). The flange plate (2) is located outside the axial through hole (51). The flange plate (2) has multiple first through holes in the vertical direction. The first bolt (21) is adapted to the first through hole and passes through the first through hole. The first bolt (21) is threadedly connected to the housing of the magnetic levitation motor (5).

7. A magnetic levitation pump according to claim 5, characterized in that: It also includes a sealing ring (4). The liquid cooling rod (1) has annular grooves formed on the upper and lower sides of the liquid cooling channel (10). The sealing ring (4) is fitted in the annular groove. The inner and outer sides of the sealing ring (4) are respectively attached to the liquid cooling rod (1) and the axial through hole (51).

8. A magnetic levitation pump according to claim 6, characterized in that: It also includes a transition block (3), which is located below the flange plate (2) and is fixed to and detachably connected to the flange plate (2). The transition block (3) is fixedly connected to the inlet pipe (31) and the outlet pipe (32) respectively. The transition block (3) has a first channel (33) and a second channel (34) formed inside. The two ends of the first channel (33) are connected to the inlet channel (13) and the inlet pipe (31) respectively. The two ends of the second channel (34) are connected to the outlet channel (14) and the outlet pipe (32) respectively.

9. A magnetic levitation pump according to claim 8, characterized in that: The inlet pipe (31) is connected to the outlet of the water pump, the outlet pipe (32) is connected to the return water tank, the return water tank is equipped with a heat dissipation device, and the inlet of the water pump is connected to the return water tank.

10. A magnetic levitation pump according to claim 5, characterized in that: It also includes a top cover (7), which covers the upper end of the axial through hole (51). The top cover (7) is fixed to the housing of the magnetic levitation motor (5). A first gap (71) is formed between the top of the top cover (7) and the pump head (6). A second gap (72) is formed between the bottom of the top cover (7) and the liquid cooling rod (1). The top cover (7) has a top cover through hole (74). The two ends of the top cover through hole (74) are connected to the first gap (71) and the second gap (72) respectively. A limiting part (73) is formed below the top cover (7) to contact the upper end of the liquid cooling rod (1). The limiting part (73) is used to prevent the upper end of the liquid cooling rod (1) from entering the second gap (72).

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