An automatic control system and method for a magnetic levitation water chiller

Abstract

This invention provides an automatic control system and method for a magnetic levitation chiller, relating to the field of control system technology. The system includes a heating cylinder with a cooling cylinder fixed to its bottom. A water inlet is located on the top of one side of the heating cylinder. One end of the heating cylinder is fixedly connected to the cooling cylinder via a pipe, and the other end of the cooling cylinder has a water outlet. Fixing frames are fixed to both sides of the cooling cylinder. Two sets of cooling components are provided on each side of the cooling cylinder. Each cooling component includes an inner cylinder, with a surrounding sleeve fixed around the inner cylinder. An insulation box is located at the bottom of the cooling cylinder. Compared to existing technologies, by controlling the cooling components to extract hot water from the insulation box based on the required cooling time and water temperature, dispersing the hot water to improve cooling efficiency, and then sending it into the cooling cylinder, the system can accurately control the cooling time based on the volume of hot water extracted by the inner cylinder each time, making system adjustment and control more convenient.

Description

Technical Field

[0001] This invention relates to the field of control system technology, specifically to an automatic control system and method for a magnetic levitation chiller. Background Technology

[0002] Magnetic levitation chillers typically have a control system and belong to the intelligent manufacturing equipment industry. Industrial control systems, industrial control systems, industrial main controllers, factory control systems, and IoT control systems are all part of the chiller unit, also known as a refrigeration unit or freezer. It is a large-scale refrigeration equipment capable of providing cooling water at constant temperature, constant flow, and constant pressure. A chiller unit consists of four main components: a compressor, evaporator, condenser, and expansion valve, thus achieving the unit's cooling and heating effects. In general applications, chiller units use a linear cooling method; however, this method has a drawback: the cooling rate is too fast, making it unsuitable for certain special agricultural and aquaculture industries. For example, excessively rapid cooling can cause excessive stress to mushrooms, fish, or other similar crops.

[0003] Existing technologies make it difficult to accurately control the cooling time and water temperature of chiller units, and also make it difficult to automatically adjust and control the system. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an automatic control system and method for a magnetic levitation chiller to solve the problems mentioned in the background. The present invention has a novel structure. Based on the required cooling time and water temperature, the control system drives the cooling component to extract hot water from the insulation tank, disperse it to improve cooling efficiency, and then send it into the cooling cylinder. The cooling time can be accurately controlled according to the volume of hot water extracted from the inner cylinder each time, making system adjustment and control more convenient.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic control system for a magnetic levitation chiller, comprising a heating cylinder, a cooling cylinder fixed to the bottom of the heating cylinder, a water inlet on one side of the top of the heating cylinder, one end of the heating cylinder being fixedly connected to the cooling cylinder via a pipe, and a water outlet at the other end of the cooling cylinder. Fixing frames are fixed to both sides of the cooling cylinder, and two sets of cooling components are provided on each side of the cooling cylinder. Each cooling component includes an inner cylinder, and a surrounding cylinder is fixed to the periphery of the inner cylinder. The bottom of the cooling cylinder is provided with... The device includes an insulated box with a vertical pipe fixed between the top of the insulated box and the cooling cylinder. Two suction pipes are fixed at both ends of the insulated box, and the other end of each suction pipe is fixedly connected to one end of the inner cylinder. A driving assembly is provided at the bottom of the heating cylinder, and the driving assembly includes a connecting frame. Connecting frames are provided at both ends of the cooling cylinder, and the connecting frames move along the periphery of the cooling cylinder. Switching assemblies are provided at both ends of the cooling cylinder, and the switching assemblies include sealing plates. Sealing plates are provided inside the insulated box at positions corresponding to the connection ports of the two suction pipes, and the sealing plates block the inside of the suction pipes.

[0006] Furthermore, the cooling component also includes inlet and outlet pipes. Inlet and outlet pipes are provided at both ends of the outer side of the wrapping cylinder. A connecting pipe is fixed to the side plate of the inner cylinder near the suction pipe, and the other end of the connecting pipe is fixedly connected to the cooling cylinder.

[0007] Furthermore, the two inner cylinders on one side of the cooling cylinder are staggered vertically, and the connecting pipes of the two inner cylinders are respectively connected to both ends of the cooling cylinder.

[0008] Furthermore, the switch assembly also includes a valve plate. The valve plate is rotatably mounted inside the connecting pipe and the vertical pipe via bearings. A vertical shaft rotatably extends from the bottom of the connecting pipe corresponding to the valve plate, and horizontal shafts rotatably extend from both sides of the vertical pipe. The vertical shaft and the horizontal shaft are fixedly connected to their respective valve plates.

[0009] Furthermore, a mounting plate is fixed to the bottom of the vertical shaft, and a transmission belt is mounted on the surface of the mounting plate. One end of the transmission belt is fixedly connected to the vertical shaft, and a first bevel gear is fixed to the other end of the transmission belt. A second bevel gear is fixed on the surface of the horizontal shaft at a position corresponding to the two first bevel gears, and the first bevel gear and the second bevel gear are meshed together.

[0010] Furthermore, one-way screws are fixed at both ends of the horizontal shaft. The one-way screws are rotatably mounted on the top of the insulation box through bearing seats. A motor is fixed at the position of the one-way screw on one side of the top of the insulation box. A screw block is threaded onto the surface of the one-way screw, and a movable frame is fixed to the screw block.

[0011] Furthermore, the movable frame slides into the interior of the insulation box and is fixed with a horizontal plate, which is fixedly connected to the sealing plate.

[0012] Furthermore, the drive assembly also includes a bidirectional screw. The bottom of the hot cylinder is rotatably mounted with the bidirectional screw via a bearing seat, and the connecting bracket is threaded onto the two end surfaces of the bidirectional screw. A drive motor is fixed at the bottom of the hot cylinder corresponding to one end of the bidirectional screw, and the output end of the drive motor is fixedly connected to the bidirectional screw.

[0013] Furthermore, piston rods are fixed to the bottom of both sides of the connecting frame, and the piston rods are slidably inserted into the inner cylinder. A piston plate is slidably installed in the inner cylinder, and the piston rods are fixedly connected to the piston plate.

[0014] An automatic control method for a magnetic levitation chiller, the control method comprising the following steps:

[0015] (1) Set the temperature when the unit starts up, and input the set temperature to be reduced to, as well as the cooling time and speed;

[0016] (2) Start the unit, detect the current real-time temperature, send hot water into the cooling cylinder, and some hot water first enters the insulation box. The hot water in the insulation box is drawn into the inner cylinder by the drive component to cool down quickly.

[0017] (3) The switch assembly opens the connection between the connecting pipe and the cooling cylinder, and the driving assembly sends the cooling water in the inner cylinder into the cooling cylinder to mix with the original hot water.

[0018] (4) The control system controls the amount of hot water entering the inner cylinder each time according to the required cooling time and the final water temperature, so as to slowly cool the hot water in the cooling cylinder.

[0019] (5) Finally, the water that has been cooled at the precise time is sent out from the outlet of the cooling cylinder.

[0020] The beneficial effects of this invention are:

[0021] 1. This invention uses a drive motor to rotate a bidirectional screw. Two connecting frames are threadedly engaged with the bidirectional screw and move along the periphery of the cooling cylinder. This causes the piston rods of the four inner cylinders to simultaneously enter the inner cylinder and drive the piston plates to move. During this process, after the suction pipe is closed and the connecting pipe is opened, the water that has been drawn into the inner cylinder and cooled can be sent into the cooling cylinder. When the suction pipe is open and the connecting pipe is closed, the piston rod drives the piston plates to move outward, drawing the hot water in the insulation box into the inner cylinder. Through the heat exchange material of the inner cylinder itself, heat exchange occurs between the hot water and the cold water in the enclosure, thereby reducing the water temperature.

[0022] 2. This invention uses a distance measuring module to accurately measure the moving length of the piston rod, thereby calculating the volume of water in the inner cylinder. Through pre-testing, for example, if it takes one hour to lower the water temperature to a certain level, the volume of water drawn into the inner cylinder each time is constant. After repeated additions into the cooling cylinder, the water temperature is maintained at a slow rate while accurately controlling the time required to reach the predetermined temperature. If it is necessary to lower the temperature to a certain level within the same time period in the future, the system will automatically control the drive component and the cooling component to perform precise cooling at the same suction frequency and with the same volume of water drawn into the inner cylinder each time, based on the system's memory.

[0023] 3. This invention uses a motor to drive a one-way screw and a horizontal shaft to rotate. At this time, the horizontal shaft can drive the valve plate inside the vertical pipe to rotate. The first bevel gear meshes with the second bevel gear. Through the transmission belt, the vertical shaft will also drive the valve plate inside the connecting pipe to rotate synchronously. Thus, the valve plates inside the vertical pipe and the connecting pipe open and close synchronously. When the valve plate inside the connecting pipe is closed, hot water can be drawn into the inner cylinder. Then, heat exchange is carried out between the inlet and outlet pipes and the wrapping frame and the inner cylinder. The rotation of the one-way screw drives the connecting frame to move. When the valve plate inside the vertical pipe is open, the sealing plate blocks the suction pipe to prevent the cooling water in the inner cylinder from flowing back into the insulation box. Thus, continuous intermittent delivery of cooling water can be achieved.

[0024] 4. The present invention connects to the cooling cylinder through connecting pipes of four inner cylinders. The cooling water flowing out from the inner cylinders is sent into the cooling cylinder from four directions at both ends of the cooling cylinder, so that the cooling water mixes more evenly with the original hot water in the cooling cylinder, avoiding uneven mixing from affecting the accurate value of the water temperature. The water temperature is measured by a temperature sensor inside the cooling cylinder.

[0025] 5. Compared with the prior art, the present invention controls the cooling components to extract hot water from the heat preservation box by controlling the required cooling time and water temperature. After dispersing the hot water, the water is sent into the cooling cylinder to improve the cooling efficiency. The cooling time can be accurately controlled according to the volume of hot water extracted by the inner cylinder each time, making the system adjustment and control more convenient. Attached Figure Description

[0026] Figure 1 This is a flowchart illustrating an automatic control method for a magnetic levitation chiller according to the present invention.

[0027] Figure 2 This is a schematic diagram of the overall structure of an automatic control system for a magnetic levitation chiller according to the present invention;

[0028] Figure 3 This is a schematic diagram of the drive component structure of an automatic control system for a magnetic levitation chiller according to the present invention;

[0029] Figure 4This is a schematic diagram of the cooling component structure of an automatic control system for a magnetic levitation chiller according to the present invention;

[0030] Figure 5 This is a schematic diagram of the separation of the inner cylinder and the outer cylinder in an automatic control system for a magnetic levitation chiller according to the present invention;

[0031] Figure 6 This is a schematic diagram showing the connection between the cooling cylinder and the insulation box in an automatic control system for a magnetic levitation chiller according to the present invention.

[0032] Figure 7 This is a schematic diagram showing the connection between the drive assembly and the valve plate of an automatic control system for a magnetic levitation chiller according to the present invention.

[0033] Figure 8 This is a schematic diagram of the drive component structure of an automatic control system for a magnetic levitation chiller according to the present invention;

[0034] Figure 9 This is a schematic diagram of the internal structure of the insulation box of an automatic control system for a magnetic levitation chiller according to the present invention.

[0035] In the diagram: 1. Heating cylinder; 11. Water inlet; 2. Cooling cylinder; 21. Water outlet; 22. Fixing frame; 3. Cooling assembly; 31. Wrapping cylinder; 32. Inlet and outlet pipes; 33. Connecting pipe; 34. Suction pipe; 35. Inner cylinder; 36. Piston plate; 4. Drive assembly; 41. Bidirectional screw; 42. Connecting frame; 43. Piston rod; 44. Drive motor; 5. Insulation box; 51. Vertical pipe; 52. Valve plate; 6. Switch assembly; 61. Vertical shaft; 62. Horizontal shaft; 63. Unidirectional screw; 64. Screw block; 65. Moving frame; 66. Mounting plate; 67. Transmission belt; 68. First bevel gear; 69. Second bevel gear; 610. Horizontal plate; 611. Sealing plate. Detailed Implementation

[0036] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0037] Please see Figures 1 to 9 The present invention provides a technical solution:

[0038] An automatic control method for a magnetic levitation chiller, the control method comprising the following steps:

[0039] (1) Set the temperature when the unit starts up, and input the set temperature to be reduced to, as well as the cooling time and speed;

[0040] (2) Start the unit, detect the current real-time temperature, send hot water into the cooling cylinder, and some hot water first enters the insulation box. The hot water in the insulation box is drawn into the inner cylinder by the drive component to cool down quickly.

[0041] (3) The switch assembly opens the connection between the connecting pipe and the cooling cylinder, and the driving assembly sends the cooling water in the inner cylinder into the cooling cylinder to mix with the original hot water.

[0042] (4) The control system controls the amount of hot water entering the inner cylinder each time according to the required cooling time and the final water temperature, so as to slowly cool the hot water in the cooling cylinder.

[0043] (5) Finally, the water that has been cooled at the precise time is sent out from the outlet of the cooling cylinder.

[0044] An automatic control system for a magnetic levitation chiller includes a heating cylinder 1, a cooling cylinder 2 fixed to the bottom of the heating cylinder 1, a water inlet 11 on one side of the top of the heating cylinder 1, one end of the heating cylinder 1 fixedly connected to the cooling cylinder 2 via a pipe, and an outlet 21 at the other end of the cooling cylinder 2. Fixing frames 22 are fixed to both sides of the cooling cylinder 2. Two sets of cooling components 3 are provided on each side of the cooling cylinder 2. Each cooling component 3 includes an inner cylinder 35, with a surrounding cylinder 31 fixed around the inner cylinder 35. A heat preservation box 5 is provided at the bottom of the cooling cylinder 2, and a vertical pipe 51 is fixed between the top of the heat preservation box 5 and the cooling cylinder 2. Two suction pipes 34 are fixed to both ends of the heat preservation box 5, and the other end of each suction pipe 34 is fixedly connected to one end of the inner cylinder 35. A driving assembly is provided at the bottom of the heating cylinder 1. 4. The driving component 4 includes a connecting frame 42. The cooling cylinder 2 is provided with connecting frames 42 at both ends, and the connecting frames 42 move along the periphery of the cooling cylinder 2. The cooling cylinder 2 is provided with a switch component 6 at both ends. The switch component 6 includes a sealing plate 611. The insulation box 5 is provided with a sealing plate 611 at the position corresponding to the connection port of the two suction pipes 34, and the sealing plate 611 blocks the inside of the suction pipes 34. In this solution, the structure composed of the heating cylinder 1 and the cooling cylinder 2 is the same as the working principle of the existing magnetic levitation chiller. Hot water is finally sent into the cooling cylinder 2. Some hot water first enters the insulation box 5 to avoid the temperature flow affecting the accurate control of the water temperature reduction time. The cooling component 3 draws the hot water away from the insulation box 5, cools it down and sends it into the cooling cylinder 2. The control system accurately controls the time required to reduce the water temperature.

[0045] In this embodiment, the cooling component 3 further includes inlet and outlet pipes 32. Inlet and outlet pipes 32 are provided at both ends of the outer side of the wrapping cylinder 31. A connecting pipe 33 is fixed to the side plate of the inner cylinder 35 near the suction pipe 34, and the other end of the connecting pipe 33 is fixedly connected to the cooling cylinder 2. The two inner cylinders 35 on one side of the cooling cylinder 2 are staggered vertically. The connecting pipes 33 of the two inner cylinders 35 are respectively connected to both ends of the cooling cylinder 2. The connecting pipes 33 of the four inner cylinders 35 are connected to the cooling cylinder 2. The cooling water flowing out of the inner cylinder 35 is sent into the cooling cylinder 2 from four directions at both ends, so that the cooling water and the original hot water in the cooling cylinder 2 are mixed more evenly, avoiding uneven mixing from affecting the accurate value of the water temperature. The water temperature is measured by the temperature sensor in the cooling cylinder 2.

[0046] In this embodiment, the switch assembly 6 further includes a valve plate 52. The valve plate 52 is rotatably mounted inside both the connecting pipe 33 and the vertical pipe 51 via bearings. A vertical shaft 61 rotatably extends from the bottom of the connecting pipe 33 corresponding to the valve plate 52, and horizontal shafts 62 rotatably extend from both sides of the vertical pipe 51. The vertical shaft 61 and horizontal shaft 62 are fixedly connected to their respective valve plates 52. A mounting plate 66 is fixed to the bottom of the vertical shaft 61, and a transmission belt 67 is mounted on the surface of the mounting plate 66. One side of the transmission belt 67... The end pulley is fixedly connected to the vertical shaft 61. A first bevel gear 68 is fixedly attached to the pulley at the other end of the transmission belt 67. A second bevel gear 69 is fixedly attached to the surface of the horizontal shaft 62 at positions corresponding to the two first bevel gears 68, and the first bevel gears 68 and second bevel gears 69 are meshed together. One-way screws 63 are fixed to both ends of the horizontal shaft 62. The one-way screws 63 are rotatably mounted on the top of the insulation box 5 via bearing seats. A motor is fixed to the top of the insulation box 5 at a position corresponding to one side of the one-way screw 63. A screw block 64 is threaded onto the surface of rod 63, and a movable frame 65 is fixed to the screw block 64. The movable frame 65 slides into the interior of the insulation box 5 and is fixed to a horizontal plate 610. The horizontal plate 610 is fixedly connected to the sealing plate 611. The motor drives the one-way screw 63 and the horizontal shaft 62 to rotate. At this time, the horizontal shaft 62 can drive the valve plate 52 in the vertical tube 51 to rotate. The first bevel gear 68 and the second bevel gear 69 mesh. Through the transmission belt 67, the vertical shaft 61 will also synchronously drive the valve plate 52 in the connecting pipe 33 to rotate. This allows the valve plate 52 in the vertical pipe 51 and the connecting pipe 33 to open and close simultaneously. When the valve plate 52 in the connecting pipe 33 is closed, hot water can be drawn into the inner cylinder 35. Then, the inlet and outlet pipes 32 and the wrapping frame exchange heat with the inner cylinder 35. The rotation of the one-way screw 63 drives the connecting frame 42 to move. When the valve plate 52 in the vertical pipe 51 is open, the sealing plate 611 blocks the suction pipe 34 to prevent the cooling water in the inner cylinder 35 from flowing back into the insulation box 5, thus enabling continuous intermittent delivery of cooling water.

[0047] In this embodiment, the drive assembly 4 further includes a bidirectional screw 41. The bottom of the heating cylinder 1 is rotatably mounted with the bidirectional screw 41 via a bearing seat, and the connecting frame 42 is threaded onto the two end surfaces of the bidirectional screw 41. A drive motor 44 is fixed at the bottom of the heating cylinder 1 corresponding to one end of the bidirectional screw 41, and the output end of the drive motor 44 is fixedly connected to the bidirectional screw 41. Piston rods 43 are fixed to the bottom of both sides of the connecting frame 42, and the piston rods 43 are slidably inserted into the inner cylinder 35. A piston plate 36 is slidably installed in the inner cylinder 35, and the piston rods 43 are fixedly connected to the piston plate 36. The drive motor 44 drives the bidirectional screw 41 to rotate, and the two connecting frames 42 and the bidirectional screw 41 are threaded together and move along the periphery of the cooling cylinder 2. Thus, the piston rods 43 of the four sets of inner cylinders 35 simultaneously penetrate into the inner cylinder 35 and drive the piston plate 36 to move. After the suction pipe 34 is closed and the connecting pipe 33 is opened, the water that has been drawn into the inner cylinder 35 and cooled can be sent into the cooling cylinder 2. When the suction pipe 34 is open and the connecting pipe 33 is closed, the piston rod 43 drives the piston plate 36 to move outward, drawing hot water from the insulation box 5 into the inner cylinder 35. The inner cylinder 35, being made of a material that facilitates heat exchange, exchanges heat with the cold water in the enclosure, thus lowering the water temperature. The hot water then mixes with the existing hot water in the cooling cylinder 2. The movement length of the piston rod 43 can be precisely measured by the distance measuring module, allowing the calculation of the water volume in the inner cylinder 35. Through pre-testing, for example, if it takes one hour to lower the water temperature to a certain level, the volume of water drawn from the inner cylinder 35 each time is constant. Repeated addition to the cooling cylinder 2 maintains a slow cooling of the water while precisely controlling the time required to reach the predetermined temperature. If further cooling to a certain temperature within the same timeframe is needed, the system's memory automatically controls the drive component 4 and the cooling component 3 to perform precise cooling at the same suction frequency and with the same volume of water drawn from the inner cylinder 35 each time.

[0048] When using the device, hot water is ultimately delivered into the cooling cylinder 2, with some hot water first entering the insulation box 5. This prevents the temperature flow from affecting the precise timing of water temperature reduction. The connecting pipes 33 of the four inner cylinders 35 are connected to the cooling cylinder 2. Cooling water flowing from the inner cylinders 35 is delivered into the cooling cylinder 2 from four directions at both ends, ensuring a more uniform mixture of the cooling water and the existing hot water in the cooling cylinder 2. This prevents uneven mixing from affecting the accurate water temperature value. The water temperature is measured by a temperature sensor inside the cooling cylinder 2. The motor drives the one-way screw 63 and the horizontal shaft 62 to rotate. At this time, the horizontal shaft 62 can drive the valve plate 52 inside the vertical pipe 51 to rotate, and the first bevel gear 68 meshes with the second bevel gear 69. Driven by the transmission belt 67, the vertical shaft 61 also synchronously drives the valve plate 52 inside the connecting pipe 33 to rotate, thus opening and closing the valve plate 52 in both the vertical pipe 51 and the connecting pipe 33. When the valve plate 52 inside the connecting pipe 33 is closed, hot water can be drawn into the inner cylinder 35, and then heat exchanged with the inner cylinder 35 through the inlet / outlet pipe 32 and the wrapping frame. The rotation of the one-way screw 63 drives the connecting frame 42 to move. When the valve plate 52 inside the vertical pipe 51 is open, the sealing plate 611 blocks the suction pipe 34, preventing the cooling water in the inner cylinder 35 from flowing back into the insulation box 5, thereby achieving continuous intermittent delivery of cooling water. The drive motor 44 drives the bidirectional screw 41 to rotate. The connecting bracket 42 and the bidirectional screw 41 are threaded together and move along the periphery of the cooling cylinder 2, so that the piston rods 43 of the four inner cylinders 35 simultaneously enter the inner cylinder 35 and drive the piston plate 36 to move. In this process, after the suction pipe 34 is closed and the connecting pipe 33 is opened, the water that has been drawn into the inner cylinder 35 and cooled can be sent into the cooling cylinder 2. When the suction pipe 34 is open and the connecting pipe 33 is closed, the piston rod 43 drives the piston plate 36 to move outward, drawing the hot water in the insulation box 5 into the inner cylinder 35. Through the heat exchange material of the inner cylinder 35 itself, heat exchange occurs with the cold water in the wrapping frame, thereby reducing the water temperature. The water is then mixed with the original hot water pushed into the cooling cylinder 2, thereby reducing the temperature. At low water temperatures, the moving length of piston rod 43 can be accurately measured by the ranging module, thereby calculating the volume of water in inner cylinder 35. Through pre-testing, for example, if it takes one hour to lower the water temperature to a certain temperature, the volume of water drawn from inner cylinder 35 each time is constant. After repeated addition into cooling cylinder 2, the water temperature is maintained at a slow rate, while the time required to cool to the predetermined temperature can be accurately controlled. If it is necessary to lower the temperature to a certain level within the same time period, the system will automatically control drive component 4 and cooling component 3 to perform precise cooling by maintaining the same suction frequency and the volume of water drawn into inner cylinder 35 each time, based on the system's memory.

[0049] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A magnetic levitation cold water machine automatic control system, comprising a hot cylinder (1) and a switch assembly (6), characterized in that: The bottom of the hot cylinder (1) is fixed with a cooling cylinder (2), one side top of the hot cylinder (1) is provided with a water inlet (11), one end of the hot cylinder (1) is fixedly connected with the cooling cylinder (2) through a pipeline, the other end of the cooling cylinder (2) is provided with a water outlet (21), the both sides of the cooling cylinder (2) are fixedly provided with fixing frames (22), the both sides of the cooling cylinder (2) are provided with two groups of cooling assemblies (3), the cooling assembly (3) comprises an inner cylinder (35), the outer periphery of the inner cylinder (35) is fixedly provided with a wrapping cylinder (31), the bottom of the cooling cylinder (2) is provided with a heat preservation box (5), and the vertical pipe (51) is fixed between the middle top of the heat preservation box (5) and the cooling cylinder (2), the both ends of the heat preservation box (5) are fixedly provided with two suction pipes (34), one end of the suction pipe (34) is fixedly connected with one end of the inner cylinder (35), the bottom of the hot cylinder (1) is provided with a driving assembly (4), the driving assembly (4) comprises a connecting frame (42), the both ends of the cooling cylinder (2) are provided with the connecting frame (42), and the connecting frame (42) moves along the outer periphery of the cooling cylinder (2), the switch assembly (6) comprises a sealing plate (611), the heat preservation box (5) is provided with the sealing plate (611) at the position corresponding to the connecting port of the two suction pipes (34) in the inside, and the sealing plate (611) is blocked in the inside of the suction pipe (34), the side edge of the inner cylinder (35) near one end of the suction pipe (34) is fixedly provided with a connecting pipe (33), the switch assembly (6) further comprises a valve plate (52), the inside of the connecting pipe (33) and the vertical pipe (51) is rotatably installed with the valve plate (52) through a bearing, the bottom of the connecting pipe (33) is rotatably penetrated with a vertical shaft (61) corresponding to the valve plate (52), the both sides of the vertical pipe (51) are rotatably penetrated with a horizontal shaft (62), the vertical shaft (61) and the horizontal shaft (62) are fixedly connected with the valve plate (52) corresponding to each other, the bottom of the vertical shaft (61) is fixedly provided with a mounting plate (66), the surface of the mounting plate (66) is installed with a transmission belt (67), one end pulley of the transmission belt (67) is fixedly connected with the vertical shaft (61), the other end pulley of the transmission belt (67) is fixedly provided with a first bevel gear (68), the surface of the horizontal shaft (62) is fixedly provided with a second bevel gear (69) corresponding to the positions of the two first bevel gears (68), and the first bevel gear (68) is meshingly connected with the second bevel gear (69), the both ends of the horizontal shaft (62) are fixedly provided with a one-way screw rod (63), the one-way screw rod (63) is rotatably installed on the top of the heat preservation box (5) through a bearing seat, and the top of the heat preservation box (5) is fixedly provided with a motor corresponding to one side of the one-way screw rod (63), the surface of the one-way screw rod (63) is threadedly sleeved with a screw block (64), and the screw block (64) is fixedly provided with a moving frame (65), the moving frame (65) is slidably penetrated into the inside of the heat preservation box (5) and is fixedly provided with a horizontal plate (610), and the horizontal plate (610) is fixedly connected with the sealing plate (611).

2. The magnetic levitation water chiller automatic control system according to claim 1, characterized in that: The cooling assembly (3) further comprises inlet and outlet pipes (32), both ends of the outer side of the wrapping cylinder (31) are provided with the inlet and outlet pipes (32), and the other end of the connecting pipe (33) is fixedly connected with the cooling cylinder (2).

3. The magnetic levitation water chiller automatic control system according to claim 2, characterized in that: The two inner cylinders (35) on one side of the cooling cylinder (2) are arranged in an up-down staggered manner, and the connecting pipes (33) of the two inner cylinders (35) are respectively connected with both ends of the cooling cylinder (2).

4. The magnetic levitation water chiller automatic control system according to claim 1, characterized in that: The driving assembly (4) further comprises a bidirectional screw rod (41), the bottom of the hot cylinder (1) is rotatably installed with the bidirectional screw rod (41) through a bearing seat, a connecting frame (42) is threadedly sleeved on the surface of both ends of the bidirectional screw rod (41), a driving motor (44) is fixedly arranged at the position corresponding to one end of the bidirectional screw rod (41) at the bottom of the hot cylinder (1), and the output end of the driving motor (44) is fixedly connected with the bidirectional screw rod (41).

5. The magnetic levitation water chiller automatic control system according to claim 4, characterized in that: The bottom of both sides of the connecting frame (42) is fixedly provided with a piston rod (43), the piston rod (43) is slidably inserted into the inner cylinder (35), a piston plate (36) is slidably arranged in the inner cylinder (35), and the piston rod (43) is fixedly connected with the piston plate (36).

6. The magnetic levitation cold water machine automatic control method realized by the magnetic levitation cold water machine automatic control system according to claim 1, characterized in that: The control method comprises the following steps: (1) setting the temperature when the unit starts, inputting the set temperature required to be reduced, and the time and speed of cooling; (2) starting the unit, detecting the current real-time temperature, sending hot water into the cooling cylinder, and first sending part of the hot water into the heat preservation box, and then sucking the hot water in the heat preservation box into the inner cylinder through the driving assembly to rapidly cool; (3) the switch assembly opens the connection between the connecting pipe and the cooling cylinder, and sends the cooling water in the inner cylinder into the cooling cylinder through the driving assembly to mix with the original hot water; (4) the control system controls the amount of hot water entering the inner cylinder each time through the driving assembly according to the cooling time required and the final water temperature, and slowly cools the hot water in the cooling cylinder; (5) finally, the water cooled to the precise temperature is sent out from the outlet end of the cooling cylinder.

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