Magnetic suspension fan cooling system

Abstract

The utility model discloses a magnetic levitation fan unit cooling system, which is used for cooling a plurality of magnetic levitation fans, and includes a total cooling loop and a fan internal cooling system arranged in each of the magnetic levitation fans; the total cooling loop includes: an ion exchanger, the inlet of the ion exchanger is suitable for connecting to a water source; a cooling tower, the inlet of the cooling tower is connected to the outlet of the ion exchanger; an external circulation pump, the water inlet of the external circulation pump is connected to the outlet of the cooling tower; the water inlet of the fan internal cooling system is connected to the water outlet of the external circulation pump; the water outlet of the fan internal cooling system is connected to the inlet of the cooling tower; the fan internal cooling system is suitable for cooling the heating equipment in the magnetic levitation fan. The utility model can realize the cooling of the magnetic levitation fan.

Description

Technical Field

[0001] The utility model relates to a magnetic suspension fan unit cooling system, belonging to the technical field of cooling systems. Background Art

[0002] At present, with the rapid development of technology, efficient cooling systems are essential to ensure the performance of electronic equipment and machinery. For magnetic levitation fans, they need to work in a confined space and have temperature requirements for operation.

[0003] After searching the prior art, it was found that a Chinese patent with publication number CN219432115U disclosed a magnetic bearing cooling system for a magnetic levitation centrifugal compressor. The patent introduced cooling water to cool the incoming air. During use, it was found that the cooling water consumption was large, and the components in the magnetic levitation centrifugal compressor that required different temperatures were difficult to cool down, making it inconvenient to use. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a magnetic suspension fan unit cooling system, which can realize the cooling of the magnetic suspension fan.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a magnetic suspension fan unit cooling system, used for cooling multiple magnetic suspension fans, including a total cooling loop and a fan internal cooling system arranged in each of the magnetic suspension fans;

[0006] The overall cooling loop comprises:

[0007] an ion exchanger, wherein an inlet of the ion exchanger is suitable for connecting to a water source;

[0008] a cooling tower, wherein the inlet of the cooling tower is connected to the outlet of the ion exchanger;

[0009] An external circulation pump, wherein the water inlet of the external circulation pump is connected to the outlet of the cooling tower;

[0010] The water inlet of the fan internal cooling system is connected to the water outlet of the external circulation pump;

[0011] The water outlet of the fan internal cooling system is connected to the inlet of the cooling tower;

[0012] The fan internal cooling system is suitable for cooling the heat generating equipment in the magnetic levitation fan.

[0013] Furthermore, in order to reduce impurities in the cooling water, the magnetic levitation fan unit cooling system also includes a circulation filter, which is installed on the pipeline between the water outlet of the external circulation pump and the fan internal cooling system.

[0014] Further, in order to achieve effective cooling of different heat-generating devices, the heat-generating device includes a first heat-generating device and a second heat-generating device;

[0015] The fan internal cooling system includes a pump, a heat exchanger, a fan circulation loop suitable for cooling the first heat generating device, and a refrigerant circulation loop suitable for cooling the second heat generating device;

[0016] The heat exchanger is provided with a first water inlet, a second water inlet, a first water outlet and a second water outlet, the first water inlet is connected to the first water outlet, and the second water inlet is connected to the second water outlet;

[0017] The water inlet of the pump is connected to the water outlet of the external circulation pump;

[0018] The refrigerant circulation loop is suitable for exchanging heat with cooling water of the total cooling loop passing through the first water inlet and the first water outlet of the heat exchanger through the second water inlet and the second water outlet;

[0019] The water outlet of the pump is respectively connected to the first water inlet of the heat exchanger and the water inlet of the fan circulation loop;

[0020] The inlet of the cooling tower is respectively connected to the first water outlet of the heat exchanger and the water outlet of the fan circulation loop.

[0021] Further, the fan circulation loop comprises:

[0022] A filter, wherein the inlet of the filter is connected to the water outlet of the pump;

[0023] An air cooler, wherein the water inlet of the air cooler is connected to the outlet of the filter;

[0024] A fan heat exchange plate, wherein the water inlet of the fan heat exchange plate is connected to the water outlet of the air cooler.

[0025] Furthermore, a specific structure of a refrigerant circulation circuit is provided, wherein the refrigerant circulation circuit comprises:

[0026] The refrigerant circulation circuit comprises:

[0027] A compressor, wherein the outlet of the compressor is connected to the second water inlet of the heat exchanger;

[0028] A frequency converter heat exchange plate, wherein the inlet of the frequency converter heat exchange plate is connected to the second water outlet of the heat exchanger;

[0029] A refrigerant pump, wherein the inlet of the refrigerant pump is connected to the outlet of the inverter heat exchange plate;

[0030] The outlet of the refrigerant pump is connected to the inlet of the compressor;

[0031] A pressure expansion tank is arranged on a pipeline between the outlet of the inverter heat exchange plate and the inlet of the refrigerant pump.

[0032] Furthermore, a specific type of refrigerant is provided, wherein the refrigerant in the refrigerant circulation loop is ethylene glycol and an aqueous solution.

[0033] Furthermore, in order to ensure safe operation and monitor pressure conditions, a cooling circuit pressure gauge is provided on the pressure expansion tank.

[0034] Furthermore, in order to maintain a stable water volume in the total cooling loop, a water storage tank is provided in the cooling tower;

[0035] The magnetic suspension fan unit cooling system also includes a float valve, which is arranged in the water storage tank, and one end of the float valve is connected to a water outlet pipe connected to the ion exchanger;

[0036] The float valve is suitable for controlling the water outlet pipe to open when the water level in the water tank drops, and closing the water outlet pipe when the water level reaches a predetermined height.

[0037] Furthermore, in order to facilitate maintenance, the magnetic suspension fan unit cooling system also includes a maintenance valve group, which includes two maintenance valves and a bypass pipeline;

[0038] The two inspection valves are respectively installed at the inlet and outlet ends of the ion exchanger;

[0039] The two ends of the bypass pipeline are connected to the two distal ends of a pair of the inspection valves;

[0040] A bypass valve is arranged on the bypass pipeline.

[0041] Furthermore, the cooling system of the magnetic suspension fan unit is also provided with a maintenance connecting pipe, one end of which is suitable for connecting to a water source, and the other end is connected to the water inlet of the cooling system in the fan;

[0042] A control valve is provided on the maintenance connecting pipe.

[0043] By adopting the above technical solution, the utility model has the following beneficial effects:

[0044] In the utility model, first, the water source leading to the ion exchanger is opened, and the ion exchanger removes calcium, magnesium ions, etc. in the cooling water, and then the cooling water is transported to the cooling tower set outdoors for cooling treatment, and is pushed to the fan internal cooling system configured by the heating equipment inside the magnetic levitation fan through the external circulation pump for cooling. The cooled water flows back to the cooling tower again, realizing the recycling of cooling water, thereby effectively reducing the operating temperature of the heating equipment in the magnetic levitation fan and improving the operating efficiency and stability.

[0045] Secondly, in the fan internal cooling system, through different fan circulation loops and refrigerant circulation loops, the most suitable cooling method can be used according to the characteristics of different heat-generating equipment to improve the overall cooling efficiency; in the fan circulation loop, it is cooled by cooling water. The pump in the fan internal cooling system introduces cooling water from the total cooling loop, and returns to the cooling tower after the circulation is completed, and takes away the heat of the first heat-generating equipment through circulation; in the refrigerant circulation loop, refrigerant is used as the circulating medium. The heat of the refrigerant is transferred to the cooling water in the total cooling loop through the heat exchanger.

[0046] In addition, in order to maintain the stability of the water volume in the total cooling loop, a water storage tank is installed in the cooling tower. Combined with a float valve, it can automatically adjust the water volume to ensure the normal operation of the system. In addition, the maintenance valve group and maintenance connecting pipe facilitate the maintenance of the ion exchanger and improve maintenance efficiency.

[0047] In summary, the utility model can achieve efficient cooling of the magnetic levitation fan, improve the operating efficiency and stability of the equipment, reduce the energy consumption required for cooling, and facilitate the inspection and maintenance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a structural schematic diagram of the magnetic suspension fan unit cooling system of the utility model;

[0049] Figure 2 The utility model is a schematic diagram of the structure of the cooling system inside the fan of the magnetic levitation fan unit cooling system. DETAILED DESCRIPTION

[0050] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0051] like Figure 1-2 As shown, a cooling system for a magnetic suspension fan unit is used for cooling seven magnetic suspension fans 1, including a total cooling loop and a fan internal cooling system arranged in each magnetic suspension fan 1;

[0052] The total cooling circuit includes:

[0053] an ion exchanger 2, wherein the inlet of the ion exchanger 2 is suitable for connecting to a water source;

[0054] A cooling tower 3, the inlet of the cooling tower 3 is connected to the outlet of the ion exchanger 2;

[0055] An external circulation pump 4, wherein the water inlet of the external circulation pump 4 is connected to the outlet of the cooling tower 3;

[0056] The water inlet of the fan internal cooling system is connected to the water outlet of the external circulation pump 4;

[0057] The water outlet of the cooling system in the fan is connected to the inlet of the cooling tower 3;

[0058] The cooling system inside the fan is suitable for cooling the heat generating equipment inside the magnetic levitation fan 1 .

[0059] In this embodiment, if Figure 1 As shown, first, the water source leading to the ion exchanger 2 is opened, and the ion exchanger 2 removes calcium, magnesium ions, etc. in the cooling water. Then, the cooling water is transported to the cooling tower 3 arranged outdoors for cooling treatment, and is pushed to the fan internal cooling system configured by the heating equipment inside the magnetic levitation fan 1 through the external circulation pump 4 for cooling. The cooled water flows back to the cooling tower 3 again, realizing the recycling of cooling water, thereby effectively reducing the operating temperature of the heating equipment in the magnetic levitation fan, and improving the operating efficiency and stability.

[0060] In some embodiments, the number of magnetic levitation fans 1 is not limited to seven and can be set according to specific needs.

[0061] Specifically, Figure 1 As shown, the cooling system of the magnetic suspension fan unit also includes a circulation filter 5, which is installed on the pipeline between the water outlet of the external circulation pump 4 and the cooling system inside the fan.

[0062] In this embodiment, if Figure 1 As shown, the function of the circulation filter 5 is to remove possible impurities and pollutants in the cooling water circulating in the total cooling loop by filtering the cooling water, so as to prevent these pollutants from entering the cooling system in the fan and causing blockage or corrosion.

[0063] A maintenance valve group is also installed on the circulation filter 5. When the circulation filter 5 needs to be repaired, the maintenance valves 61 installed at both ends of the inlet and outlet can be closed first, and then the bypass valve on the bypass pipeline can be opened to allow the circulating water to temporarily bypass the circulation filter 5.

[0064] Specifically, Figure 1-2 As shown, the heat generating device includes a first heat generating device and a second heat generating device;

[0065] The fan internal cooling system comprises a pump 11, a heat exchanger 12, a fan circulation loop suitable for cooling the first heat generating device and a refrigerant circulation loop suitable for cooling the second heat generating device;

[0066] The heat exchanger 12 is provided with a first water inlet, a second water inlet, a first water outlet and a second water outlet, the first water inlet is connected to the first water outlet, and the second water inlet is connected to the second water outlet;

[0067] The water inlet of the pump 11 is connected to the water outlet of the external circulation pump 4;

[0068] The refrigerant circulation loop is suitable for exchanging heat with the cooling water of the total cooling loop passing through the first water inlet and the first water outlet of the heat exchanger 12;

[0069] The water outlet of the pump 11 is respectively connected to the first water inlet of the heat exchanger 12 and the water inlet of the fan circulation loop;

[0070] The inlet of the cooling tower 3 is respectively connected to the first water outlet of the heat exchanger 12 and the water outlet of the fan circulation loop.

[0071] In this embodiment, if Figure 1-2 As shown, the first heat generating device may be a bearing of a fan, etc., and the second heat generating device may be a frequency converter.

[0072] In the fan circulation loop, the fan circulation loop is mainly for the first heat generating device, and cools it by cooling water. The pump 11 in the fan internal cooling system introduces cooling water from the total cooling loop, and returns to the cooling tower 3 after completing the circulation, and takes away the heat of the first heat generating device through circulation.

[0073] In the refrigerant circulation loop, the refrigerant circulation loop is directed to the second heat generating device, and uses the refrigerant as the circulation medium. The heat of the refrigerant is transferred to the cooling water in the total cooling loop through the heat exchanger 12 .

[0074] Through different designs of the fan circulation loop and the refrigerant circulation loop, the most suitable cooling method can be adopted according to the characteristics of different heating equipment to improve the overall cooling efficiency.

[0075] Specifically, Figure 2 As shown, the fan circulation loop can be of the following structure, including:

[0076] A filter 131, wherein the inlet of the filter 131 is connected to the water outlet of the pump 11;

[0077] An air cooler 132, wherein a water inlet of the air cooler 132 is connected to an outlet of the filter 131;

[0078] The fan heat exchange plate 133 , the water inlet of the fan heat exchange plate 133 is connected to the water outlet of the air cooler 132 .

[0079] In this embodiment, if Figure 1-2 As shown, the function of the fan circulation loop is to use the circulating cooling water to cool the fan of the magnetic levitation fan. The operation process can be: the pump 11 presses the cooling water from the total cooling loop into the fan circulation loop. The cooling water first passes through the filter 131 to filter out the impurities and pollutants that may exist therein to avoid clogging or corrosion of the pipeline. The filtered cooling water enters the air cooler 132, and is directly cooled by air in the pipeline of the air cooler 132 to reduce the temperature. The air cooler can be air-cooled, and in some embodiments it can also be water-cooled. The pre-cooled cooling water enters the fan heat exchange plate 133, and the fan heat exchange plate 133 directly contacts the first heat generating device, namely the bearing of the fan, and absorbs the heat dissipated therefrom. The heated cooling water is then discharged back to the cooling tower 3, and the heat is dissipated into the atmosphere through the cooling tower 3 to complete the cycle.

[0080] Specifically, Figure 2 As shown, the refrigerant circulation circuit may have the following structure, including:

[0081] The refrigerant circulation circuit includes:

[0082] A compressor 141, wherein the outlet of the compressor 141 is connected to the second water inlet of the heat exchanger 12;

[0083] The inverter heat exchange plate 143, the inlet of the inverter heat exchange plate 143 is connected to the second water outlet of the heat exchanger 12;

[0084] A refrigerant pump 142, wherein the inlet of the refrigerant pump 142 is connected to the outlet of the inverter heat exchange plate 143;

[0085] The outlet of the refrigerant pump 142 is connected to the inlet of the compressor 141;

[0086] The pressure expansion tank 145 is arranged on the pipeline between the outlet of the inverter heat exchange plate 143 and the inlet of the refrigerant pump 142 .

[0087] In this embodiment, if Figure 2As shown, the refrigerant circulation loop is a closed refrigeration cycle system. The compressor 141 is the power source of the entire refrigeration cycle, sucking in low-pressure and low-temperature refrigerant and compressing it into high-temperature and high-pressure refrigerant. It is transported to the second water inlet of the heat exchanger 12 and goes out from the second water outlet, transferring heat to the cooling water of the total cooling loop. The refrigerant is cooled in this process, and the low-temperature refrigerant is transported to the inverter heat exchange plate 143. In the inverter heat exchange plate 143, the refrigerant absorbs heat from the second heat-generating device, namely the inverter, to cool it. Then it enters the refrigerant pump 142, flows back to the compressor 141 through the refrigerant pump 142, and repeats the above cycle process. The pressure expansion tank 145 is at the outlet of the inverter heat exchange plate 143 to adjust the pressure of the refrigerant in the cycle during operation. In some embodiments, an expansion valve and a filter are also provided between the heat exchanger 12 and the inverter heat exchange plate 143.

[0088] Specifically, the refrigerant in the refrigerant circulation loop is ethylene glycol and an aqueous solution.

[0089] In this embodiment, the ratio of ethylene glycol to water may be specifically 77:23.

[0090] Specifically, Figure 2 As shown, the pressure expansion tank 145 is provided with a cooling circuit pressure gauge.

[0091] In this embodiment, if Figure 2 As shown, the pressure expansion tank 145 is provided with a cooling circuit pressure gauge for monitoring and displaying the working pressure of the refrigerant circulation circuit.

[0092] Specifically, Figure 1 As shown, a water storage tank is provided in the cooling tower 3;

[0093] The magnetic levitation fan unit cooling system also includes a float valve 31, which is arranged in the water tank. One end of the float valve 31 is connected to the water outlet pipe connected to the ion exchanger 2. The float valve 31 is suitable for controlling the opening of the water outlet pipe when the water level in the water tank drops, and closing the water outlet pipe when the water level reaches a predetermined height.

[0094] In this embodiment, if Figure 1 As shown, the function of the float valve 31 is to automatically adjust the water level of the water tank. When the water level drops to a certain height, the float valve 31 will open the outlet pipe connected to the ion exchanger 2 to add new cooling water. When the water level rises to a preset height, the float valve 31 will automatically close the outlet pipe to prevent the water level from being too high.

[0095] Specifically, Figure 1 As shown, the cooling system of the magnetic suspension fan unit also includes a maintenance valve group, and the maintenance valve group includes two maintenance valves 61 and a bypass pipeline 62;

[0096] Two inspection valves 61 are installed at both ends of the inlet and outlet of the ion exchanger 2;

[0097] The two ends of the bypass line 62 are connected to the two distal ends of a pair of inspection valves 61;

[0098] The bypass line 62 is provided with a bypass valve.

[0099] In this embodiment, if Figure 1 As shown, two inspection valves 61 are respectively installed at the water inlet and outlet of the ion exchanger 2. If the ion exchanger 2 needs to be repaired or replaced, the two inspection valves 61 installed at the inlet and outlet can be closed first, thereby temporarily separating the ion exchanger 2 from the total cooling loop.

[0100] After the inspection valve 61 is closed, the water inlet of the system will be cut off. At this moment, the bypass valve on the bypass line 62 can be opened to allow circulating water to bypass the ion exchanger 2 through the bypass line, thereby ensuring that other parts such as the cooling tower 3, the external circulation pump 4, etc. continue to operate.

[0101] Specifically, Figure 1 As shown, the cooling system of the magnetic suspension fan unit is also provided with a maintenance connecting pipe 71, one end of which is suitable for connecting to a water source, and the other end is connected to the water inlet of the cooling system in the fan;

[0102] A control valve 72 is provided on the maintenance connecting pipe 71 .

[0103] In this embodiment, if Figure 1 As shown, the maintenance connection pipe 71 can also directly deliver external water source or reserve water to the fan internal cooling system, so that it can operate independently of the total cooling loop. This is very useful when other components of the total cooling loop, such as the cooling tower 3, are repaired, and the fan internal cooling system can continue to cool and avoid shutdown.

[0104] When the main cooling loop fails and cannot supply water to the cooling system in the fan, the maintenance connecting pipe 71 can also be used as an emergency water supply port to temporarily transport external water to the circulation system in the fan.

[0105] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic suspension fan unit cooling system, used for cooling a plurality of magnetic suspension fans (1), characterized in that: It comprises a total cooling loop and an internal fan cooling system arranged in each of the magnetic suspension fans (1); The overall cooling loop comprises: An ion exchanger (2), wherein the inlet of the ion exchanger (2) is suitable for connecting to a water source; A cooling tower (3), wherein the inlet of the cooling tower (3) is connected to the outlet of the ion exchanger (2); An external circulation pump (4), wherein a water inlet of the external circulation pump (4) is connected to an outlet of the cooling tower (3); The water inlet of the fan internal cooling system is connected to the water outlet of the external circulation pump (4); The water outlet of the cooling system in the fan is connected to the inlet of the cooling tower (3); The fan internal cooling system is suitable for cooling the heat generating equipment in the magnetic levitation fan (1).

2. The magnetic suspension fan unit cooling system according to claim 1 is characterized in that: It also includes a circulation filter (5), which is installed on the pipeline between the water outlet of the external circulation pump (4) and the cooling system inside the fan.

3. The magnetic suspension fan unit cooling system according to claim 1, characterized in that: The heat generating device comprises a first heat generating device and a second heat generating device; The fan internal cooling system comprises a pump (11), a heat exchanger (12), a fan circulation circuit suitable for cooling a first heat generating device, and a refrigerant circulation circuit suitable for cooling a second heat generating device; The heat exchanger (12) is provided with a first water inlet, a second water inlet, a first water outlet and a second water outlet, the first water inlet is connected to the first water outlet, and the second water inlet is connected to the second water outlet; The water inlet of the pump (11) is connected to the water outlet of the external circulation pump (4); The refrigerant circulation loop is suitable for exchanging heat with cooling water of the total cooling loop passing through the first water inlet and the first water outlet of the heat exchanger (12); The water outlet of the pump (11) is respectively connected to the first water inlet of the heat exchanger (12) and the water inlet of the fan circulation loop; The inlet of the cooling tower (3) is respectively connected to the first water outlet of the heat exchanger (12) and the water outlet of the fan circulation loop.

4. The magnetic levitation fan unit cooling system according to claim 3 is characterized in that: The fan circulation loop comprises: A filter (131), wherein an inlet of the filter (131) is connected to a water outlet of the pump (11); An air cooler (132), wherein a water inlet of the air cooler (132) is connected to an outlet of the filter (131); A fan heat exchange plate (133), wherein a water inlet of the fan heat exchange plate (133) is connected to a water outlet of the air cooler (132).

5. The magnetic levitation fan unit cooling system according to claim 3, characterized in that: The refrigerant circulation circuit comprises: A compressor (141), wherein an outlet of the compressor (141) is connected to a second water inlet of the heat exchanger (12); A frequency converter heat exchange plate (143), wherein the inlet of the frequency converter heat exchange plate (143) is connected to the second water outlet of the heat exchanger (12); A refrigerant pump (142), wherein an inlet of the refrigerant pump (142) is connected to an outlet of the inverter heat exchange plate (143); The outlet of the refrigerant pump (142) is connected to the inlet of the compressor (141); A pressure expansion tank (145), wherein the pressure expansion tank (145) is arranged on a pipeline between an outlet of the inverter heat exchange plate (143) and an inlet of the refrigerant pump (142).

6. The magnetic suspension fan unit cooling system according to claim 5, characterized in that: The refrigerant in the refrigerant circulation loop is ethylene glycol and an aqueous solution.

7. The magnetic suspension fan unit cooling system according to claim 5, characterized in that: The pressure expansion tank (145) is provided with a cooling circuit pressure gauge.

8. The magnetic levitation fan unit cooling system according to claim 1, characterized in that: The cooling tower (3) is provided with a water storage tank; It also includes a float valve (31), which is arranged in the water storage tank, and one end of the float valve (31) is connected to a water outlet pipe connected to the ion exchanger (2); The float valve (31) is suitable for controlling the water outlet pipe to open when the water level in the water storage tank drops, and closing the water outlet pipe when the water level reaches a predetermined height.

9. The magnetic levitation fan unit cooling system according to claim 1, characterized in that: Also included is a maintenance valve group, the maintenance valve group including two maintenance valves (61) and a bypass pipeline (62); The two inspection valves (61) are respectively installed at the inlet and outlet ends of the ion exchanger (2); The two ends of the bypass pipeline (62) are connected to the two distal ends of a pair of the inspection valves (61); The bypass pipeline (62) is provided with a bypass valve.

10. The magnetic suspension fan unit cooling system according to claim 1, characterized in that: A maintenance connection pipe (71) is also provided, one end of which is suitable for connecting to a water source, and the other end of which is connected to a water inlet of a cooling system in the fan; The maintenance connecting pipe (71) is provided with a control valve (72).

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