Heat transfer device and vacuum pump

Abstract

The heat transfer device is applied to the vacuum pump, and the heat transfer device comprises a first heat exchange shell, a second heat exchange shell, a first pipeline and a second pipeline; the first heat exchange shell is used for being connected with the outer wall of the vacuum pump; the second heat exchange shell is used for being connected with the tail exhaust pipe of the vacuum pump; the first pipeline is located in the first heat exchange shell, the second pipeline is located in the second heat exchange shell, and the first pipeline is connected with the second pipeline, so that the heat exchange medium circulates and flows between the first pipeline and the second pipeline. The present disclosure can reduce the operating cost while meeting the operating temperature of the tail exhaust pipeline, and can reduce the pump body temperature of the vacuum pump.

Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the technical field of heat conduction, and particularly relates to a heat transfer device and a vacuum pump. BACKGROUND

[0002] The vacuum pump is connected with a tail exhaust pipeline, and the tail exhaust pipeline is used for exhausting dust and impurities in the pipeline.

[0003] In the related art, in order to prevent the tail exhaust pipeline from freezing due to overcooling and thus affecting the exhaust of dust and impurities in the tail exhaust pipeline, the tail exhaust pipeline is generally connected with an electric heat tracing belt. When the tail exhaust pipeline starts to operate, the electric heat tracing belt can increase its temperature by converting electric energy into heat energy, and then transfer the temperature to the tail exhaust pipeline, so as to increase the temperature of the tail exhaust pipeline.

[0004] However, the temperature increasing process of the electric heat tracing belt needs to consume a large amount of electric power resources, which causes waste of resources and is not conducive to cost saving. SUMMARY

[0005] The present disclosure provides a heat transfer device and a vacuum pump, which can reduce the operating cost while meeting the operating temperature of the tail exhaust pipeline, and can reduce the temperature of the pump body of the vacuum pump. The technical solution is as follows:

[0006] In one aspect, the present disclosure provides a heat transfer device applied to a vacuum pump, which comprises a first heat exchange shell, a second heat exchange shell, a first pipeline and a second pipeline; the first heat exchange shell is used for being connected with the outer wall of the vacuum pump; the second heat exchange shell is used for being connected with the tail exhaust pipeline of the vacuum pump; the first pipeline is located in the first heat exchange shell, the second pipeline is located in the second heat exchange shell, and the first pipeline is connected with the second pipeline, so that the heat exchange medium circulates between the first pipeline and the second pipeline.

[0007] In one implementation manner of the present disclosure, the first pipeline is a serpentine pipe, the first pipeline is uniformly arranged in the first heat exchange shell, and the liquid inlet port and the liquid outlet port of the first pipeline are adjacently arranged.

[0008] In another implementation manner of the present disclosure, the first pipeline has two convex rings and two sealing rings; one of the convex rings is located at the liquid inlet port of the first pipeline, and the other convex ring is located at the liquid outlet port of the first pipeline; one of the sealing rings is located at the liquid inlet port of the first pipeline, coaxially adheres to one end face of the corresponding convex ring, and faces the opening of the liquid inlet port of the first pipeline, and the other sealing ring is located at the liquid outlet port of the first pipeline, coaxially adheres to one end face of the corresponding convex ring, and faces the opening of the liquid outlet port of the first pipeline.

[0009] In yet another implementation manner of the present disclosure, the second pipeline has a first port, a second port, a third port and a fourth port; the first port and the second port are located on one side of the second heat exchange shell, and the third port and the fourth port are located on the other side of the second heat exchange shell; the first port is connected with the liquid inlet port of the first pipeline, and the second port is connected with the liquid outlet port of the first pipeline, or the first port is connected with the third port of the second pipeline in the adjacent second heat exchange shell, and the second port is connected with the fourth port of the second pipeline in the adjacent second heat exchange shell; the third port is connected with the fourth port, or the third port is connected with the first port of the second pipeline in the adjacent second heat exchange shell, and the fourth port is connected with the second port of the second pipeline in the adjacent second heat exchange shell.

[0010] In yet another implementation manner of the present disclosure, the heat transfer device further comprises a first connecting pipe; the first connecting pipe is connected with the third port and the fourth port respectively.

[0011] In yet another implementation manner of the present disclosure, the heat transfer device further comprises a second connecting pipe; the second connecting pipe is a flexible bellows, and the second connecting pipe is connected with the first pipeline and the second pipeline respectively.

[0012] In yet another implementation manner of the present disclosure, the heat transfer device further comprises a water driving assembly; the water driving assembly comprises a water driving wheel, a driving wheel and a transmission member; the water driving wheel is rotatably located in the first pipeline; the driving wheel is rotatably located outside the first pipeline; the transmission member is in transmission connection with the water driving wheel and the driving wheel respectively, so that the driving wheel is driven to rotate the water driving wheel under the driving of the tail gas in the tail exhaust pipe.

[0013] In yet another implementation manner of the present disclosure, the water driving assembly further comprises an air cavity and a safety valve; the air outlet port of the air cavity is connected with the air inlet port of the safety valve, the air outlet port of the safety valve is connected with the tail exhaust pipe, and the driving wheel is located in the air cavity.

[0014] In yet another implementation manner of the present disclosure, the transmission member is a shaft structure; the shaft wall of the transmission member close to the first end is in rotatable sealing fit with the pipe wall of the first pipeline, and the shaft wall of the transmission member close to the second end is in rotatable sealing fit with the cavity wall of the air cavity.

[0015] On the other hand, the present disclosure provides a vacuum pump comprising any one of the heat transfer devices in the preceding aspect.

[0016] The technical scheme provided by the embodiments of the present disclosure has at least the following beneficial effects:

[0017] Since the first heat exchange shell is connected with the outer wall of the vacuum pump, and the first pipeline is located in the first heat exchange shell, the heat emitted by the vacuum pump during operation can be transmitted to the first pipeline through the first heat exchange shell. Therefore, the temperature of the heat exchange medium in the first pipeline rises. Since the first pipeline is connected with the second pipeline and constitutes a communication loop, the heat exchange medium in the first pipeline can flow into the second pipeline, thereby increasing the temperature of the second pipeline. When the temperature of the second pipeline rises, the heat can be transmitted to the tail exhaust pipe of the vacuum pump through the second heat exchange shell, thereby increasing the temperature of the tail exhaust pipe and being beneficial to the exhaust of impurities in the pipe. At the same time, since the heat transfer device can absorb the temperature of the outer wall of the vacuum pump, the temperature of the vacuum pump is reduced, so that the heat transfer device can also improve the stability of the vacuum pump during operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present disclosure, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0019] Figure 1 is a structural schematic view of a part of the heat transfer device provided by the embodiments of the present disclosure;

[0020] Figure 2 is a structural schematic view of another part of the heat transfer device provided by the embodiments of the present disclosure;

[0021] Figure 3 is a structural schematic view of a water driving assembly provided by the embodiments of the present disclosure; Figure 1 is a local enlarged view of A of the water driving assembly;

[0022] Figure 4 is a structural schematic view of a water driving assembly provided by the embodiments of the present disclosure;

[0023] Figure 5 is a structural schematic view of another water driving assembly provided by the embodiments of the present disclosure;

[0024] Figure 6 is a view in A direction of another water driving assembly provided by the embodiments of the present disclosure;

[0025] Figure 7 is a structural schematic view of a fixing plate provided by the embodiments of the present disclosure;

[0026] Figure 8 is a schematic view of the installation of the second heat exchange shell on the tail exhaust pipe provided by the embodiments of the present disclosure;

[0027] Figure 9 is a structural schematic diagram of a vacuum pump provided by the embodiment of the present disclosure.

[0028] The symbols in the figure represent the following meanings:

[0029] 1, first heat exchange shell;

[0030] 11, fixing member;

[0031] 2, second heat exchange shell;

[0032] 21, connecting member; 22, heat preservation substance;

[0033] 3, first pipeline;

[0034] 31, convex ring; 32, sealing ring; 34, straight pipe;

[0035] 4, second pipeline;

[0036] 41, first port; 42, second port; 43, third port; 44, fourth port;

[0037] 5, first connecting pipe;

[0038] 6, second connecting pipe;

[0039] 7, water driving assembly;

[0040] 71, water driving wheel; 711, inner paddle; 72, driving wheel; 721, outer paddle; 73, transmission member; 732, magnetic block; 74, air cavity; 75, safety valve; 76, guide pipe; 77, bearing; 78, sleeve; 79, fixing plate;

[0041] 100, tail pipe;

[0042] 101, negative pressure cavity. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the present disclosure clearer, the following will further describe the embodiments of the present disclosure in combination with the drawings.

[0044] The embodiment of the present disclosure provides a heat transfer device. Figure 1 is a structural schematic diagram of a part of heat transfer device provided by the embodiment of the present disclosure, Figure 2 is a structural schematic diagram of another part of heat transfer device provided by the embodiment of the present disclosure, referring to Figure 1 and Figure 2In the embodiment, the heat transfer device is applied to a vacuum pump, and the heat transfer device comprises a first heat exchange shell 1, a second heat exchange shell 2, a first pipeline 3 and a second pipeline 4. The first heat exchange shell 1 is used to be connected with the outer wall of the vacuum pump, the second heat exchange shell 2 is used to be connected with the tail exhaust pipe 100 of the vacuum pump, the first pipeline 3 is located in the first heat exchange shell 1, the second pipeline 4 is located in the second heat exchange shell 2, and the first pipeline 3 is connected with the second pipeline 4, so that the heat exchange medium circulates between the first pipeline 3 and the second pipeline 4.

[0045] Since the first heat exchange shell 1 is connected with the outer wall of the vacuum pump, and the first pipeline 3 is located in the first heat exchange shell 1, the heat generated by the vacuum pump during operation can be transferred to the first pipeline 3 through the first heat exchange shell 1. Therefore, the temperature of the heat exchange medium in the first pipeline 3 rises. Since the first pipeline 3 is connected with the second pipeline 4 and forms a communication loop, the heat exchange medium in the first pipeline 3 can flow into the second pipeline 4, thereby increasing the temperature of the second pipeline 4. When the temperature of the second pipeline 4 rises, the heat can be transferred to the tail exhaust pipe 100 of the vacuum pump through the second heat exchange shell 2, thereby increasing the temperature of the tail exhaust pipe 100 and helping the tail exhaust pipe 100 to discharge impurities in the pipe. At the same time, since the heat transfer device can absorb the temperature of the outer wall of the vacuum pump, the temperature of the vacuum pump is reduced, so that the heat transfer device can also improve the stability of the vacuum pump during operation.

[0046] Exemplarily, the first heat exchange shell 1 comprises a plurality of fixing members 11, each fixing member 11 is located at both ends of the first heat exchange shell 1 along the length direction of the first pipeline 3, and each fixing member 11 is connected with the outer wall of the vacuum pump.

[0047] Each fixing member 11 is fixedly connected with the outer wall of the vacuum pump, so that the first heat exchange shell 1 can be stably connected with the vacuum pump, thereby improving the reliability of heat transfer between the vacuum pump and the heat transfer device and improving the stability of the heat transfer device.

[0048] Exemplarily, the fixing member 11 is provided with a bolt hole. Through the fixing member 11 and the bolt hole thereof, the first heat exchange shell 1 and the outer wall of the vacuum pump can be connected by bolts. The bolt connection can improve the strength of the connection between the first heat exchange shell 1 and the outer wall of the vacuum pump. Moreover, the bolt connection can make the disassembly and assembly of the heat transfer device and the outer wall of the vacuum pump more convenient, thereby improving the applicability of the heat transfer device.

[0049] Exemplarily, the material of the fixing member 11 can be metal. By adopting the metal fixing member 11, the first heat exchange shell 1 and the outer wall of the vacuum pump can be welded. The welding can greatly improve the strength of the connection between the first heat exchange shell 1 and the outer wall of the vacuum pump, thereby improving the stability and reliability of the heat transfer device.

[0050] Exemplarily, the second heat exchange shell 2 is a flexible structure to facilitate the attachment to the outer wall of the tail pipe 100.

[0051] Exemplarily, the second pipeline 4 is a flexible structure to facilitate the attachment to the second heat exchange shell 2 and the tail pipe 100.

[0052] Referring again to Figure 1 In the embodiment, the first pipeline 3 is a coiled pipe, and the first pipeline 3 is uniformly arranged in the first heat exchange shell 1, and the inlet port and the outlet port of the first pipeline 3 are adjacently arranged.

[0053] The coiled pipe used as the first pipeline 3 can make the heat exchange medium in the first pipeline 3 absorb the heat of the vacuum pump to a greater extent, thereby improving the heat transfer efficiency of the heat transfer device.

[0054] Exemplarily, the coiled pipe has a plurality of straight pipes 34 arranged in parallel and at intervals, and adjacent two straight pipes 34 are communicated, so that the heat exchange medium can continuously flow in each straight pipe 34 to absorb the heat of the outer wall of the vacuum pump.

[0055] Figure 3 The partial enlarged view of A of the heat transfer device provided by the embodiment of the present disclosure is shown in FIG. 4. Figure 1 Referring again to Figure 3 In the embodiment, the first pipeline 3 has two convex rings 31 and two sealing rings 32, one convex ring 31 is located at the inlet port of the first pipeline 3, and the other convex ring 31 is located at the outlet port of the first pipeline 3, one sealing ring 32 is located at the inlet port of the first pipeline 3 and coaxially attached to one end face of the corresponding convex ring 31 and faces the opening of the inlet port of the first pipeline 3, and the other sealing ring 32 is located at the outlet port of the first pipeline 3 and coaxially attached to one end face of the corresponding convex ring 31 and faces the opening of the outlet port of the first pipeline 3.

[0056] In the above implementation, the two sealing rings 32 are used to seal the insertion pipe at the inlet port of the first pipeline 3 and the insertion pipe at the outlet port of the first pipeline 3. The convex ring 31 can fix the position of the sealing ring 32 and support the sealing ring 32 to improve the stability of the sealing ring 32. The sealing ring 32 can improve the stability and reliability of the heat transfer device.

[0057] Exemplarily, the material of the sealing ring 32 can be rubber. Rubber has greater elasticity and wear resistance, and the sealing ring 32 made of rubber can be more durable, thereby prolonging the service life of the sealing ring 32.

[0058] Referring again to Figure 2In the embodiment, the second pipeline 4 has a first port 41, a second port 42, a third port 43 and a fourth port 44. The first port 41 and the second port 42 are located on one side of the second heat exchange shell 2, and the third port 43 and the fourth port 44 are located on the other side of the second heat exchange shell 2. The first port 41 is connected with the liquid inlet port of the first pipeline 3, and the second port 42 is connected with the liquid outlet port of the first pipeline 3. Alternatively, the first port 41 is connected with the third port 43 of the second pipeline 4 in the adjacent second heat exchange shell 2, and the second port 42 is connected with the fourth port 44 of the second pipeline 4 in the adjacent second heat exchange shell 2. The third port 43 is connected with the fourth port 44, or the third port 43 is connected with the first port 41 of the second pipeline 4 in the adjacent second heat exchange shell 2, and the fourth port 44 is connected with the second port 42 of the second pipeline 4 in the adjacent second heat exchange shell 2.

[0059] Since the first port 41 is connected with the liquid inlet port of the first pipeline 3, and the second port 42 is connected with the liquid outlet port of the first pipeline 3, the heat exchange medium in the first pipeline 3 can flow into the second pipeline 4, and then heat the tailing pipe 100 through the second pipeline 4.

[0060] Exemplarily, when there is one second heat exchange shell 2 and one second pipeline 4, the first port 41 is connected with the liquid inlet port of the first pipeline 3, the second port 42 is connected with the liquid outlet port of the first pipeline 3, and the third port 43 is connected with the fourth port 44, forming a closed loop.

[0061] Exemplarily, when there are two second heat exchange shells 2 and two second pipelines 4, the first port 41 is connected with the liquid inlet port of the first pipeline 3, the second port 42 is connected with the liquid outlet port of the first pipeline 3, the third port 43 is connected with the first port 41 of the second pipeline 4 in the adjacent second heat exchange shell 2, and the fourth port 44 is connected with the second port 42 of the second pipeline 4 in the adjacent second heat exchange shell 2. The third port 43 in the adjacent second heat exchange shell 2 is connected with the fourth port 44 in the adjacent second heat exchange shell 2, forming a closed loop.

[0062] Continuing to refer to Figure 2 In the embodiment, the heat transfer device further comprises a first connecting pipe 5 connected with the third port 43 and the fourth port 44 respectively.

[0063] Since the first connecting pipe 5 is connected with the third port 43 and the fourth port 44 respectively, when the heat exchange medium flows out through the third port 43, it can flow into the fourth port 44, so that the heat exchange medium can continue to circulate in the second pipeline 4, and the integration of the second pipeline 4 is improved.

[0064] Continuing to refer to Figure 2In the embodiment, the heat transfer device further comprises a second connecting pipe 6, which is an elastic bellows pipe, and the second connecting pipe 6 is connected with the first pipe 3 and the second pipe 4 respectively.

[0065] Exemplarily, after the second pipe 4 is heated, the pipe body of the second pipe 4 is prone to expand to a certain extent due to the heat, so that each part of the pipe body of the second pipe 4 is in a stretched state. Since the pipe body of the second pipe 4 cannot return to the initial state after expanding to a certain extent, the second pipe 4 is prone to soften and relax over a long period of time, and the heat transfer medium leaks at the connection, thereby reducing the stability of the heat transfer device. Since the second connecting pipe 6 is an elastic bellows pipe, when the second pipe 4 deforms, the second connecting pipe 6 can deform adaptively due to its elasticity, compensate for the looseness caused by the deformation of the second pipe 4, avoid the leakage of the heat transfer medium in the second pipe 4, and improve the stability of the heat transfer device. That is, the second connecting pipe 6 is an elastic bellows pipe, which can compensate for the looseness caused by the deformation of the second pipe 4, thereby protecting the second pipe 4 and improving the stability of the second pipe 4.

[0066] Exemplarily, by setting the second connecting pipe 6 as an elastic bellows pipe, the service life of the second pipe 4 can also be prolonged, and the second pipe 4 can be prevented from being damaged, so that the staff needs to frequently repair or replace the second pipe 4. In this way, not only the use cost of the heat transfer device can be reduced, but also the workload of the staff can be reduced.

[0067] In some examples, the second connecting pipe 6 is a folded rubber pipe, which has similar effects and elasticity as the elastic bellows pipe, and can prevent the second pipe 4 from leaking.

[0068] Exemplarily, the heat transfer device comprises two second connecting pipes 6, one second connecting pipe 6 is connected with the first port 41 and the liquid outlet port of the first pipe 3 respectively, and the other second connecting pipe 6 is connected with the second port 42 and the liquid inlet port of the first pipe 3 respectively, further improving the stability and reliability of the heat transfer device.

[0069] Optionally, the heat transfer device has a plurality of second connecting pipes 6. The plurality of second connecting pipes 6 can be three, four, five or more. The plurality of second connecting pipes 6 are connected in sequence and can be applied to a connection with a longer distance.

[0070] Figure 4 A structure diagram of a water removal assembly provided by the embodiment of the present disclosure is shown in FIG. 1. Figure 4The heat transfer device further comprises a water driving assembly 7, which comprises a water driving wheel 71, a driving wheel 72 and a transmission member 73. The water driving wheel 71 is rotatably arranged in the first pipeline 3. The driving wheel 72 is rotatably arranged outside the first pipeline 3. The transmission member 73 is in driving connection with the water driving wheel 71 and the driving wheel 72 respectively, so that the driving wheel 72 drives the water driving wheel 71 to rotate under the driving of the exhaust gas in the exhaust pipeline 100.

[0071] Since the driving wheel 72 can rotate under the driving of the exhaust gas in the exhaust pipeline 100, the driving wheel 72 can drive the water driving wheel 71 to rotate through the transmission member 73. The rotating water driving wheel 71 can drive the heat exchange medium in the first pipeline 3 to flow, so that the heat exchange medium in the first pipeline 3 can enter the second pipeline 4, thereby increasing the temperature of the second pipeline 4.

[0072] Again referring to Figure 4 In the embodiment, the water driving assembly 7 further comprises an air cavity 74 and a safety valve 75. The air outlet of the air cavity 74 is connected with the air inlet of the safety valve 75, the air outlet of the safety valve 75 is connected with the exhaust pipeline 100, and the driving wheel 72 is arranged in the air cavity 74.

[0073] The driving wheel 72 is arranged in the air cavity 74, the air cavity 74 is connected with the exhaust pipeline 100 through the safety valve 75, and under the negative pressure of the exhaust pipeline 100, the air flows in the air cavity 74, and the driving wheel 72 can rotate under the action of the air flow. The safety valve 75 is arranged between the air cavity 74 and the exhaust pipeline 100, when the safety valve 75 is opened, the air in the air cavity 74 can flow, and the driving wheel 72 rotates accordingly. When the safety valve 75 is closed, the air in the air cavity 74 stops flowing, and the driving wheel 72 is closed accordingly. In addition, by controlling the opening degree of the safety valve 75, the air flow rate in the air cavity 74 can be controlled, thereby controlling the rotating speed of the driving wheel 72, so that the rotating speed of the driving wheel 72 is always in a suitable range. Therefore, the safety valve 75 can improve the stability and reliability of the heat transfer device.

[0074] In the embodiment, the transmission member 73 is a shaft structure, the shaft wall of the transmission member 73 is in sealing and rotatable connection with the pipe wall of the first pipeline 3 near the first end, and the shaft wall of the transmission member 73 is in sealing and rotatable connection with the cavity wall of the air cavity 74 near the second end.

[0075] In the above implementation mode, the transmission member 73, the water driving wheel 71 and the driving wheel 72 are coaxial with each other, so that the driving wheel 72 can drive the water driving wheel 71 to rotate synchronously through the transmission member 73. Moreover, during the rotation of the transmission member 73, the transmission member 73 and the pipe wall of the first pipeline 3, and the transmission member 73 and the cavity wall of the air cavity 74 are always in sealing, avoiding the leakage of liquid or gas, and effectively improving the reliability.

[0076] Figure 5FIG. 6 is a structural schematic diagram of another water drive assembly provided by embodiments of the present disclosure, Figure 6 FIG. 6 is a structural schematic diagram of another water drive assembly provided by embodiments of the present disclosure, Figure 5 and Figure 6 In the embodiment, the water drive assembly further comprises an air cavity 74, a safety valve 75, a conduit 76, two bearings 77, two sleeves 78, and two fixing plates 79. The air outlet of the air cavity 74 is connected to the air inlet of the safety valve 75, the air outlet of the safety valve 75 is connected to the tail pipe 100, and the driving wheel 72 is located in the air cavity 74. One end of the conduit 76 is located in the air cavity 74 and communicates with the first pipeline 3, and the other end of the conduit 76 is located outside the air cavity 74 and communicates with the second pipeline 4. The water drive wheel 71 comprises an inner paddle 711, which is located in the first pipeline 3, is coaxial with the first pipeline 3, is rotatably connected to the first pipeline 3, and is a magnetic member. The driving wheel 72 comprises an outer paddle 721, which is located in the air cavity 74, is coaxial with the first pipeline 3, and is rotatably sleeved outside the first pipeline 3. The two bearings 77, the two sleeves 78, and the two fixing plates 79 are respectively located in the air cavity 74 and are respectively sleeved outside the first pipeline 3, and each fixing plate 79 is connected to the air cavity 74. One fixing plate 79, one sleeve 78, one bearing 77, the outer paddle 721, another bearing 77, another sleeve 78, and another fixing plate 79 are sequentially arranged along the axial direction of the first pipeline 3 to avoid axial movement of the outer paddle 721 along the first pipeline 3. The transmission member 73 comprises two magnetic blocks 732, which are symmetrically arranged along the axis of the outer paddle 721 and are respectively connected to the outer paddle 721, and the two magnetic blocks 732 rotate synchronously with the outer paddle 721 to enable the inner paddle 711 to rotate under the action of magnetic force.

[0077] The outer paddle 721 is located in the air cavity 74, and since the air outlet of the air cavity 74 is connected to the negative pressure cavity 101 in the tail pipe 100, the outer paddle 721 in the air cavity 74 can rotate under the action of air flow. The two fixing plates 79, the two sleeves 78, and the two bearings 77 can clamp the outer paddle 721 to avoid axial movement of the outer paddle 721 along the first pipeline 3. Since the two magnetic blocks 732 are symmetrically arranged along the axis of the outer paddle 721 and are respectively connected to the outer paddle 721, when the outer paddle 721 starts to rotate, the two magnetic blocks 732 can be driven to rotate synchronously. Since the inner paddle 711 is located between the two magnetic blocks 732, the inner paddle 711 is a magnetic member, and the magnetism of the inner paddle 711 is opposite to that of the magnetic blocks 732, so that the inner paddle 711 can be attracted to the magnetic blocks 732, thereby driving the inner paddle 711 to rotate through the rotation of the magnetic blocks 732. The rotation of the inner paddle 711 can drive the heat exchange medium in the first pipeline 3 to flow.

[0078] Exemplarily,Figure 7 is a structural schematic diagram of the fixed plate provided by the embodiment of the present disclosure, referring to Figure 7 The inside of the fixed plate 79 is hollowed out to allow gas to flow.

[0079] Exemplarily, the magnetic block 732 can be a permanent magnet, thereby improving the stability of the heat transfer device.

[0080] During the operation of the heat transfer device, when the rotation rate of the drive wheel 72 in the tail pipe 100 changes, the rotation rate of the water wheel 71 in the first pipeline 3 will also change accordingly. Therefore, during the operation of the heat transfer device, if the staff wants to increase the flow rate of the heat exchange medium, the rotation rate of the drive wheel 72 in the tail pipe 100 can be increased, thereby increasing the rotation rate of the water wheel 71 in the first pipeline 3, and further increasing the flow rate of the heat exchange medium.

[0081] Exemplarily, the second heat exchange shell 2 includes a plurality of connecting pieces 21, each of which is arranged at intervals. Each connecting piece 21 extends perpendicular to the length direction of the second pipeline 4 and is connected to the outer wall of the tail pipe 100 of the vacuum pump. The connecting pieces 21 can stably connect the second heat exchange shell 2 to the tail pipe 100 of the vacuum pump, thereby improving the stability of the heat transfer device.

[0082] In some examples, the connecting piece 21 is a magic tape. The magic tape can be wrapped around the outer wall of the tail pipe 100 of the vacuum pump to connect the second heat exchange shell 2 to the tail pipe 100 of the vacuum pump. The magic tape can make the connection between the second heat exchange shell 2 and the tail pipe 100 of the vacuum pump more convenient, and also facilitate the disassembly between the second heat exchange shell 2 and the tail pipe 100 of the vacuum pump.

[0083] In other examples, the connecting piece 21 is a clamp. The clamp is convenient for the staff to install and disassemble. The clamp can improve the tightness between the second heat exchange shell 2 and the tail pipe 100 of the vacuum pump.

[0084] Exemplarily, Figure 8 is a schematic diagram of the installation of a second heat exchange shell on a tail pipe provided by the embodiment of the present disclosure, referring to Figure 8 Since the second heat exchange shell 2 is a flexible structure, the second heat exchange shell 2 can be spirally wound on the outer wall of the tail pipe 100 of the vacuum pump, thereby increasing the contact area between the second heat exchange shell 2 and the outer wall of the tail pipe 100 of the vacuum pump, and further improving the heat transfer efficiency between the second heat exchange shell 2 and the tail pipe 100 of the vacuum pump. Since the second pipeline 4 is a flexible structure, the second heat exchange shell 2 can be spirally wound on the outer wall of the tail pipe 100 of the vacuum pump.

[0085] Exemplarily, the second heat exchange shell 2 has a heat preservation substance 22. The heat preservation substance 22 is located at an end of the second heat exchange shell 2 away from the tail exhaust pipe 100 of the vacuum pump, so as to reduce the heat transferred from the second pipeline 4 to the air outside the second heat exchange shell 2, and further improve the heat conversion efficiency of the second heat exchange shell 2 to the tail exhaust pipe 100 of the vacuum pump.

[0086] In some examples, the heat preservation substance 22 is heat preservation foam. The heat preservation foam is light in weight and can meet the requirement of the second heat exchange shell 2 on heat preservation performance. Moreover, the use of the heat preservation foam can also reduce the overall weight of the heat transfer device, so as to facilitate the installation and transportation of the heat transfer device by the staff.

[0087] In other examples, the heat preservation substance 22 is cotton. The filling of the cotton in the second heat exchange shell 2 can avoid the second heat exchange shell 2 from emitting a large amount of heat to the air, and further effectively reduce the heat loss of the second pipeline 4.

[0088] Figure 9 The vacuum pump provided by the embodiment of the present disclosure is shown in a structural schematic view, which is combined with the heat transfer device shown in any one of the above-mentioned examples. Figure 9 The vacuum pump comprises Figures 1-9 the heat transfer device shown in any one of the above-mentioned examples.

[0089] Since the vacuum pump comprises Figures 1-9 the heat transfer device shown in any one of the above-mentioned examples, the vacuum pump has all the beneficial effects of the heat transfer device shown in any one of the above-mentioned examples, which will not be repeated here. Figures 1-9

[0090] The above-mentioned only is the optional embodiment of the present disclosure, and does not use to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.​

Claims

1. A heat transfer device, characterized in that, The heat transfer device, which is used in vacuum pumps, includes a first heat exchange shell (1), a second heat exchange shell (2), a first pipeline (3), a second pipeline (4), and a water drive assembly (7). The first heat exchange housing (1) is used to connect to the outer wall of the vacuum pump; The second heat exchange housing (2) is used to connect to the tailpipe of the vacuum pump; The first pipe (3) is located inside the first heat exchange shell (1), and the second pipe (4) is located inside the second heat exchange shell (2). The first pipe (3) is connected to the second pipe (4) so ​​that the heat exchange medium circulates between the first pipe (3) and the second pipe (4). The water-driving assembly (7) includes a water-driving wheel (71), a drive wheel (72), and a transmission component (73). The water-driving wheel (71) is rotatably located inside the first pipe (3), and the drive wheel (72) is rotatably located outside the first pipe (3). The transmission component (73) is connected to the water-driving wheel (71) and the drive wheel (72) respectively, so that the drive wheel (72) drives the water-driving wheel (71) to rotate under the drive of the exhaust gas in the tailpipe.

2. The heat transfer device according to claim 1, characterized in that, The first pipeline (3) is a serpentine pipe. The first pipeline (3) is evenly arranged in the first heat exchange shell (1), and the liquid inlet port and liquid outlet port of the first pipeline (3) are arranged adjacent to each other.

3. The heat transfer device according to claim 1, characterized in that, The first pipeline (3) has two protruding rings (31) and two sealing rings (32). One of the convex rings (31) is located at the inlet port of the first pipeline (3), and the other convex ring (31) is located at the outlet port of the first pipeline (3); One of the sealing rings (32) is located at the liquid inlet port of the first pipeline (3) and is coaxially attached to one end face of the corresponding convex ring (31) and faces the opening of the liquid inlet port of the first pipeline (3). The other sealing ring (32) is located at the liquid outlet port of the first pipeline (3) and is coaxially attached to one end face of the corresponding convex ring (31) and faces the opening of the liquid outlet port of the first pipeline (3).

4. The heat transfer device according to claim 1, characterized in that, The second conduit (4) has a first port (41), a second port (42), a third port (43) and a fourth port (44). The first port (41) and the second port (42) are located on one side of the second heat exchange shell (2), and the third port (43) and the fourth port (44) are located on the other side of the second heat exchange shell (2); The first port (41) is connected to the liquid inlet port of the first pipeline (3), and the second port (42) is connected to the liquid outlet port of the first pipeline (3). Alternatively, the first port (41) is connected to the third port (43) of the second pipeline (4) in the adjacent second heat exchange shell (2), and the second port (42) is connected to the fourth port (44) of the second pipeline (4) in the adjacent second heat exchange shell (2). The third port (43) is connected to the fourth port (44), or the third port (43) is connected to the first port (41) of the second pipeline (4) in the adjacent second heat exchange shell (2), and the fourth port (44) is connected to the second port (42) of the second pipeline (4) in the adjacent second heat exchange shell (2).

5. The heat transfer device according to claim 4, characterized in that, The heat transfer device also includes a first connecting pipe (5); The first connecting pipe (5) is connected to the third port (43) and the fourth port (44) respectively.

6. The heat transfer device according to claim 1, characterized in that, The heat transfer device also includes a second connecting pipe (6). The second connecting pipe (6) is an elastic corrugated pipe, and the second connecting pipe (6) is connected to the first pipe (3) and the second pipe (4) respectively.

7. The heat transfer device according to claim 1, characterized in that, The water-driving assembly (7) also includes an air chamber (74) and a safety valve (75); The air outlet of the air chamber (74) is connected to the air inlet of the safety valve (75), the air outlet of the safety valve (75) is connected to the tailpipe, and the drive wheel (72) is located inside the air chamber (74).

8. The heat transfer device according to claim 7, characterized in that, The transmission component (73) is a shaft-shaped structural component; The portion of the shaft wall of the transmission component (73) near the first end is rotatably sealed to the pipe wall of the first pipeline (3), and the portion of the shaft wall of the transmission component (73) near the second end is rotatably sealed to the cavity wall of the air chamber (74).

9. A vacuum pump, characterized in that, Includes the heat transfer device according to any one of claims 1 to 8.

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