An energy-saving variable frequency magnetic levitation chiller unit

Abstract

This invention relates to the field of magnetic levitation chiller technology and discloses an energy-saving variable frequency magnetic levitation chiller, including an evaporator, a condenser installed at the bottom of the evaporator, a connecting seat fixedly mounted at the end of the condenser, and a flow guiding component on the outer wall of the connecting seat. This energy-saving variable frequency magnetic levitation chiller recovers waste heat from the condenser cooling water to perform closed-loop constant temperature control on the magnetic levitation bearing, ensuring the bearing remains within its optimal operating temperature range. This avoids coil resistance drift, sensor temperature drift, and fluctuations in levitation stiffness under low-temperature conditions, improving the operational stability of the magnetic levitation bearing. Utilizing the residual heat of the heated cooling water for constant temperature treatment of the magnetic levitation bearing eliminates the need for additional electrical energy consumption for preheating and insulation. Building upon the inherent high efficiency and energy saving of magnetic levitation technology, this further reduces auxiliary energy consumption and improves overall energy efficiency.

Description

Technical Field

[0001] This invention relates to the field of magnetic levitation chiller technology, specifically an energy-saving variable frequency magnetic levitation chiller. Background Technology

[0002] A magnetic levitation chiller is a high-efficiency and energy-saving vapor compression refrigeration equipment that uses magnetic levitation bearing technology. It mainly consists of a magnetic levitation centrifugal compressor, evaporator, condenser, throttling device, frequency conversion control system and auxiliary piping components.

[0003] In traditional variable frequency magnetic levitation chiller units, the condensation heat discharged from the condenser is typically dissipated directly through the cooling water to the cooling tower, resulting in low energy utilization. Simultaneously, the unit's compressor motor generates heat during operation, requiring natural convection or external electric fans for cooling. External cooling devices increase energy consumption and operating costs. Furthermore, magnetic levitation bearings are prone to low temperatures and decreased control stability in low-temperature environments, typically requiring electric heat tracing for preheating and insulation, further increasing auxiliary energy consumption. Summary of the Invention

[0004] This invention provides an energy-saving variable frequency magnetic levitation chiller unit, which solves the problems mentioned in the background art.

[0005] The present invention provides the following technical solution: an energy-saving variable frequency magnetic levitation chiller unit, including an evaporator, a condenser installed at the bottom of the evaporator, a connecting seat fixedly mounted at the end of the condenser, a flow guiding component provided on the outer wall of the connecting seat, a magnetic levitation compressor fixedly mounted at the top of the evaporator, a connecting pipe fixedly mounted on the outer wall of the condenser, a guide pipe installed on the outer wall of the condenser, a heat dissipation plate mounted on the top of the magnetic levitation compressor, a water outlet pipe fixedly mounted on the outer wall of the connecting seat, and a water inlet pipe fixedly mounted on the outer wall of the connecting seat.

[0006] As a preferred technical solution of the present invention: the flow guiding assembly includes a fixed pipe, the outer wall of the fixed pipe is fixedly fitted with a flow guiding pipe, a solenoid valve and a water pump are connected in series on the flow guiding pipe, a release pipe is installed on the outer wall of the water pump, a sealing chamber is fixedly fitted on the top of the release pipe, and a driven impeller is rotatably connected to the inner cavity of the sealing chamber.

[0007] As a preferred embodiment of the present invention: a pulley is fixedly mounted at the end of the driven impeller, a transmission belt is rotatably connected to the outer wall of the pulley, an installation frame is installed on the outer wall of the heat sink, a heat sink impeller is rotatably connected to the inner cavity of the installation frame, and a heat sink fan is installed on the outer wall of the heat sink.

[0008] As a preferred embodiment of the present invention: a second pulley is fixedly mounted on the end of the heat dissipation impeller away from the heat dissipation fan; a thermostatic tube is fixedly mounted on the top of the sealed chamber; an insulation sleeve is fixedly mounted on the outer wall of the thermostatic tube; and a discharge pipe is fixedly mounted on the outer wall of the insulation sleeve.

[0009] As a preferred embodiment of the present invention: the inner cavity of the guide tube is connected to the inner cavity of the fixed tube, the outer wall of the fixed tube at the end away from the guide tube is connected to the outer wall of the outlet tube, the outer diameter of the driven impeller matches the inner diameter of the sealing chamber, and the inner cavity of the sealing chamber is connected to the inner cavities of the release tube and the constant temperature tube respectively.

[0010] As a preferred embodiment of the present invention: the end of the transmission belt away from the first pulley is rolledly connected to the outer wall of the second pulley, and the transmission belt is made of vulcanized rubber; the mounting positions of the mounting frame and the cooling fan correspond to the mounting positions of the cooling plate.

[0011] As a preferred technical solution of the present invention: the inner wall of the heat insulation sleeve is in contact with the outer wall of the magnetic levitation compressor, and there are two heat insulation sleeves, which are respectively installed on both sides of the outer wall of the magnetic levitation compressor.

[0012] As a preferred embodiment of the present invention: the outer walls of the fixed tube, the guide tube and the release tube are all covered with heat-insulating sponge, the sealing chamber and the release tube are installed in a staggered manner, and the inner wall diameter of the guide tube and the release tube is smaller than the inner wall diameter of the fixed tube.

[0013] As a preferred embodiment of the present invention: the inner cavity of the insulation sleeve is hollow, and the inner cavity of the discharge pipe is connected to the inner cavity of the insulation sleeve.

[0014] As a preferred embodiment of the present invention: the bottom of the heat sink is in contact with the top of the magnetic levitation compressor, and the heat sink is made of copper. The end of the connecting pipe away from the condenser is connected to the outer wall of the magnetic levitation compressor.

[0015] The present invention has the following beneficial effects: 1. This energy-saving variable frequency magnetic levitation chiller unit recovers waste heat from the condenser cooling water and performs closed-loop constant temperature control on the magnetic levitation bearing, keeping the bearing always within the optimal operating temperature range. This avoids coil resistance drift, sensor temperature drift, and fluctuations in suspension stiffness under low-temperature conditions, improving the operational stability of the magnetic levitation bearing. The residual heat of the heated cooling water is used to maintain the temperature of the magnetic levitation bearing, completing preheating and insulation without additional electrical energy consumption. Based on the high efficiency and energy saving of magnetic levitation technology itself, this further reduces the unit's auxiliary energy consumption and improves the overall energy efficiency level.

[0016] 2. This energy-saving variable frequency magnetic levitation chiller unit uses a driven impeller device installed in a sealed chamber. The driven impeller is driven by the kinetic energy of the water circulation in the release pipe. Under the transmission of the first pulley, the second pulley and the transmission belt, the heat dissipation impeller rotates, which provides auxiliary air cooling for the magnetic levitation compressor. There is no need to configure an electric cooling fan, and no additional power consumption is added. It can improve the heat dissipation conditions of the magnetic levitation compressor and reduce the temperature rise of the magnetic levitation compressor during operation. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the evaporator structure of the present invention; Figure 3 This is a schematic diagram of the condenser structure of the present invention; Figure 4 This is a schematic diagram of the connector structure of the present invention; Figure 5 This is a schematic diagram of the magnetic levitation compressor structure of the present invention; Figure 6 This is a schematic diagram of the insulation sleeve structure of the present invention; Figure 7 This is a schematic diagram of the release tube structure of the present invention; Figure 8 This is a schematic diagram of the sealed chamber structure of the present invention; Figure 9 This is a schematic diagram of the heat sink structure of the present invention.

[0018] In the diagram: 1. Evaporator; 2. Condenser; 3. Connecting base; 4. Flow guide assembly; 5. Magnetic levitation compressor; 6. Connecting pipe; 7. Guide pipe; 8. Heat sink; 9. Water outlet pipe; 10. Water inlet pipe; 401. Fixed pipe; 402. Guide pipe; 403. Solenoid valve; 404. Water pump; 405. Release pipe; 406. Sealing chamber; 407. Driven impeller; 408. First pulley; 409. Drive belt; 4010. Mounting frame; 4011. Cooling impeller; 4012. Second pulley; 4013. Cooling fan; 4014. Thermostatic pipe; 4015. Insulation sleeve; 4016. Discharge pipe. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-9An energy-saving variable frequency magnetic levitation chiller unit includes an evaporator 1, a condenser 2 installed at the bottom of the evaporator 1, a connecting seat 3 fixedly mounted at the end of the condenser 2, a flow guiding component 4 provided on the outer wall of the connecting seat 3, a magnetic levitation compressor 5 fixedly mounted at the top of the evaporator 1, a connecting pipe 6 fixedly mounted on the outer wall of the condenser 2, a guide pipe 7 installed on the outer wall of the condenser 2, a heat dissipation plate 8 installed on the top of the magnetic levitation compressor 5, a water outlet pipe 9 fixedly mounted on the outer wall of the connecting seat 3, and a water inlet pipe 10 fixedly mounted on the outer wall of the connecting seat 3. In the above structure, the condenser 2 is set at the bottom of the evaporator 1, and the magnetic levitation compressor 5 is set at the top of the evaporator 1. Under the action of the magnetic levitation compressor 5, the refrigerant can circulate between the evaporator 1 and the condenser 2. During the circulation of the refrigerant, the refrigerant changes into different states. During the operation of the magnetic levitation compressor 5, its internal rotor is suspended under the electromagnetic force of the magnetic levitation bearing, with no mechanical contact and no friction loss. The control system drives the motor to rotate at high speed, compressing the low-temperature and low-pressure gaseous refrigerant at the outlet of the evaporator 1 into a high-temperature and high-pressure gaseous refrigerant.

[0021] In a preferred embodiment: the flow guiding assembly 4 includes a fixed pipe 401, a flow guiding pipe 402 is fixedly mounted on the outer wall of the fixed pipe 401, a solenoid valve 403 and a water pump 404 are connected in series on the flow guiding pipe 402, a release pipe 405 is installed on the outer wall of the water pump 404, a sealing chamber 406 is fixedly mounted on the top of the release pipe 405, and a driven impeller 407 is rotatably connected to the inner cavity of the sealing chamber 406; In the above structure, cooling water is introduced into the inner cavity of the condenser 2, which is set at the bottom of the evaporator 1, through the water inlet pipe 10 set on the outer wall of the connecting seat 3. The cooling water enters the inner cavity of the condenser 2, thereby cooling the high-temperature and high-pressure refrigerant entering the inner cavity of the condenser 2. This causes the high-temperature and high-pressure gaseous refrigerant to release heat and condense into high-pressure liquid refrigerant. In this process, the cooling water can absorb heat, thereby increasing the temperature of the cooling water. After the temperature of the cooling water increases, it is discharged to the outside through the water outlet pipe 9. Under the action of the cooling water, the heat of the refrigerant is absorbed, causing the gaseous refrigerant to condense into liquid refrigerant.

[0022] In a preferred embodiment: a pulley 408 is fixedly mounted at the end of the driven impeller 407, a transmission belt 409 is tumblingly connected to the outer wall of the pulley 408, an installation frame 4010 is installed on the outer wall of the heat sink 8, a heat sink impeller 4011 is rotatably connected to the inner cavity of the installation frame 4010, and a heat sink fan 4013 is installed on the outer wall of the heat sink 8. In the above structure, the cooling water flowing out of the outlet pipe 9 is drawn by the fixed pipe 401 under the action of the solenoid valve 403 and the water pump 404, so that the cooling water discharged from the inner cavity of the condenser 2 can be introduced into the inner cavity of the sealing chamber 406 through the fixed pipe 401, the guide pipe 402, and the release pipe 405. Under the impact of the water flow, the driven impeller 407 can rotate in the inner cavity of the sealing chamber 406, and the rotation of the driven impeller 407 drives the first pulley 408, which in turn drives the transmission belt 409.

[0023] In a preferred embodiment: a second pulley 4012 is fixedly mounted on the end of the heat dissipation impeller 4011 away from the heat dissipation fan 4013, a thermostatic tube 4014 is fixedly mounted on the top of the sealed chamber 406, an insulation sleeve 4015 is fixedly mounted on the outer wall of the thermostatic tube 4014, and a discharge pipe 4016 is fixedly mounted on the outer wall of the insulation sleeve 4015. In the above structure, a thermostatic pipe 4014 is installed on the top of the sealed chamber 406. Under the action of the thermostatic pipe 4014, the high-temperature cooling water in the inner cavity of the release pipe 405 is guided and released into the inner cavity of the insulation jacket 4015, so that the inner cavity of the insulation jacket 4015 is filled with high-temperature water. Thus, under the action of the insulation jacket 4015, the magnetic levitation bearing in the inner cavity of the magnetic levitation compressor 5 can be subjected to thermostatic treatment to increase the temperature of the magnetic levitation bearing. The magnetic levitation bearing is quite sensitive to the operating temperature. If the temperature is too low, it will easily cause sensor temperature drift and changes in control stiffness. Maintaining the bearing in a suitable temperature range can ensure the stability of electromagnetic control parameters and improve levitation accuracy and running stability.

[0024] In a preferred embodiment: the inner cavity of the guide pipe 402 is connected to the inner cavity of the fixed pipe 401, the outer wall of the fixed pipe 401 away from the guide pipe 402 is connected to the outer wall of the outlet pipe 9, the outer diameter of the driven impeller 407 matches the inner diameter of the sealing chamber 406, and the inner cavity of the sealing chamber 406 is connected to the inner cavities of the release pipe 405 and the thermostatic pipe 4014 respectively. In the above structure, the sealing chamber 406 provided on the outer wall of the release pipe 405, and the driven impeller 407 rotatably connected in the inner cavity of the sealing chamber 406, under the action of the water pump 404, can draw the cooling water with increased temperature in the inner cavity of the condenser 2 through the fixed pipe 401 into the inner cavity of the guide pipe 402, and then enter the release pipe 405 along the guide pipe 402, and then enter the inner cavity of the sealing chamber 406 upwards to impact the driven impeller 407 in the inner cavity of the sealing chamber 406, so that the driven impeller 407 can rotate in the inner cavity of the sealing chamber 406, so as to achieve the driving effect with the first pulley 408.

[0025] In a preferred embodiment: the end of the transmission belt 409 away from the first pulley 408 is rolledly connected to the outer wall of the second pulley 4012, and the transmission belt 409 is made of vulcanized rubber. The mounting positions of the mounting frame 4010 and the cooling fan 4013 correspond to the mounting positions of the heat sink 8. In the above structure, a transmission belt 409 is installed on the outer wall of the first pulley 408, and the other end of the transmission belt 409 is sleeved on the outer wall of the second pulley 4012. Under the impact of the water flow, the driven impeller 407 and the first pulley 408 rotate synchronously, driving the transmission belt 409 to rotate. Power is transmitted under the action of the transmission belt 409, thereby driving the second pulley 4012. In turn, the second pulley 4012 drives the heat dissipation impeller 4011, allowing the heat dissipation impeller 4011 to rotate in the inner cavity of the mounting frame 4010. This accelerates the air circulation around the outer wall of the heat dissipation plate 8, thereby continuously transferring the heat generated by the drive motor of the magnetic levitation compressor 5 to the outside under the action of the heat dissipation plate 8, thus reducing the operating temperature of the magnetic levitation compressor 5.

[0026] In a preferred embodiment: the inner wall of the insulation sleeve 4015 is in contact with the outer wall of the magnetic levitation compressor 5, and there are two insulation sleeves 4015, which are respectively installed on both sides of the outer wall of the magnetic levitation compressor 5. In the above structure, the heat insulation sleeve 4015 installed on the outer wall of the magnetic levitation compressor 5 allows the water pump 404 to draw in the cooling water after it has been heated from the condenser 2. The water is then guided through the guide pipe 402 and the release pipe 405 and released into the inner cavity of the thermostatic pipe 4014 and the heat insulation sleeve 4015. This heat insulation sleeve 4015 provides thermostatic treatment for the magnetic levitation bearing in the inner cavity of the magnetic levitation compressor 5, preventing the magnetic levitation bearing from being in a low temperature state for a long time. This keeps the bearing in a suitable temperature range, ensuring the stability of the electromagnetic control parameters and improving the levitation accuracy and operational stability.

[0027] In a preferred embodiment: the outer walls of the fixed tube 401, the guide tube 402 and the release tube 405 are all covered with heat-insulating sponge, the sealing chamber 406 and the release tube 405 are installed in a staggered manner, and the inner wall diameters of the guide tube 402 and the release tube 405 are smaller than the inner wall diameter of the fixed tube 401. In the above structure, the heat-insulating sponge attached to the outer wall of the fixed pipe 401, the guide pipe 402 and the release pipe 405 can prevent the heat of the water in the inner cavity of the guide pipe 402 and the release pipe 405 from dissipating outward, thereby allowing the cooling water to maintain a certain temperature and avoiding excessive heat loss during the flow guidance process. This ensures that the water can maintain a certain temperature when it flows into the inner cavity of the heat-insulating sleeve 4015, thereby providing constant temperature treatment for the magnetic levitation bearings at both ends of the inner cavity of the magnetic levitation compressor 5.

[0028] In a preferred embodiment: the inner cavity of the insulation sleeve 4015 is hollow, and the inner cavity of the discharge pipe 4016 is connected to the inner cavity of the insulation sleeve 4015. In the above structure, the discharge pipe 4016 installed on the outer wall of the insulation jacket 4015 releases the water after the temperature rises into the inner cavity of the insulation jacket 4015, which will cause the temperature of the insulation jacket 4015 to rise. Thus, under the action of the insulation jacket 4015, the magnetic levitation bearings at both ends of the magnetic levitation compressor 5 are subjected to constant temperature treatment, and the bearings are kept in a suitable temperature range. This can ensure the stability of electromagnetic control parameters and improve the levitation accuracy and smooth operation.

[0029] In a preferred embodiment: the bottom of the heat sink 8 is in contact with the top of the magnetic levitation compressor 5, and the heat sink 8 is made of copper. The end of the connecting pipe 6 away from the condenser 2 is connected to the outer wall of the magnetic levitation compressor 5. In the above structure, the stator and rotor in the inner cavity of the magnetic levitation compressor 5 are coaxially integrated into the heat sink 8 on the outer wall of the magnetic levitation compressor 5 and located in the middle section of the magnetic levitation compressor 5. The magnetic levitation bearings are placed at the two ends of the rotor support position, located at both ends of the inner cavity of the magnetic levitation compressor 5. Under the action of the heat sink 8, the heat generated during the operation of the equipment can be transferred to the outside. Under the action of the mounting frame 4010 and the cooling fan 4013, the air circulation around the heat sink 8 is accelerated, thereby creating a temperature difference between the top and bottom of the heat sink 8, which better guides and releases the heat generated by the magnetic levitation compressor 5.

[0030] Working principle: During operation, the magnetic levitation compressor 5 is started, energizing it. Its internal rotor is suspended by the electromagnetic force of the magnetic bearing. The high-speed rotation of the rotor compresses the low-temperature, low-pressure gaseous refrigerant from the evaporator 1 outlet into a high-temperature, high-pressure gaseous refrigerant, which is then fed into the condenser 2. The high-temperature, high-pressure gaseous refrigerant flows in the shell side of the shell-and-tube condenser 2, while cooling water from the cooling tower flows in the tube side. The refrigerant transfers heat to the cooling water through the tube walls, releases its own heat, and condenses into a high-pressure liquid refrigerant. The cooling water absorbs heat and its temperature rises. After the cool water, which is at a lower temperature, enters the inner cavity of the condenser 2 through the inlet pipe 10, it absorbs heat and its temperature rises. Then, it is discharged outward through the outlet pipe 9. At this time, by opening the solenoid valve 403 and starting the water pump 404, the water pump 404 can draw out the cool water with a higher temperature from the inner cavity of the water pipe 9. The cool water with a higher temperature then enters the inner cavity of the release pipe 405 and the sealing chamber 406 through the guide pipe 402, thereby driving the driven impeller 407 in the inner cavity of the sealing chamber 406. This allows the driven impeller 407 to rotate inside the sealed chamber 406. After the water flows through the sealed chamber 406 and moves upward, it is injected into the inner cavity of the insulation jacket 4015 through the thermostatic pipe 4014. This fills the inner cavity of the insulation jacket 4015 with cooling water at a higher temperature. Under the action of the insulation jacket 4015, the magnetic bearings at both ends of the inner cavity of the magnetic levitation compressor 5 are subjected to thermostatic treatment, maintaining the bearings within a suitable temperature range. This ensures the stability of electromagnetic control parameters and improves levitation accuracy and operational stability. During the rotation of the driven impeller 407, the first pulley 408 is driven synchronously, causing it to rotate along with the driven impeller 407. This, in turn, drives the transmission belt 409 to rotate, transmitting power to the second pulley 4012. The second pulley 4012 then drives the cooling impeller 4011 to rotate within the mounting frame 4010, accelerating airflow around the outer wall of the heat sink 8. This creates a temperature difference between the top and bottom of the heat sink 8, allowing the heat generated during the operation of the magnetic levitation compressor 5 to be continuously dissipated through the heat sink 8, ensuring the stable operation of the magnetic levitation compressor 5.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended technical solutions and their equivalents.

Claims

1. An energy-saving variable frequency magnetic levitation chiller unit, comprising an evaporator (1), characterized in that: A condenser (2) is installed at the bottom of the evaporator (1), a connecting seat (3) is fixedly installed at the end of the condenser (2), a flow guide assembly (4) is provided on the outer wall of the connecting seat (3), a magnetic levitation compressor (5) is fixedly installed at the top of the evaporator (1), a connecting pipe (6) is fixedly installed on the outer wall of the condenser (2), a guide pipe (7) is installed on the outer wall of the condenser (2), a heat sink (8) is installed on the top of the magnetic levitation compressor (5), a water outlet pipe (9) is fixedly installed on the outer wall of the connecting seat (3), and a water inlet pipe (10) is fixedly installed on the outer wall of the connecting seat (3).

2. The energy-saving variable frequency magnetic levitation chiller unit according to claim 1, characterized in that: The flow guiding assembly (4) includes a fixed pipe (401), and a flow guiding pipe (402) is fixedly mounted on the outer wall of the fixed pipe (401). A solenoid valve (403) and a water pump (404) are connected in series on the flow guiding pipe (402). A release pipe (405) is installed on the outer wall of the water pump (404). A sealing chamber (406) is fixedly mounted on the top of the release pipe (405). A driven impeller (407) is rotatably connected to the inner cavity of the sealing chamber (406).

3. The energy-saving variable frequency magnetic levitation chiller unit according to claim 2, characterized in that: The driven impeller (407) is fixedly fitted with a pulley (408) at its end. A transmission belt (409) is tumbledly connected to the outer wall of the pulley (408). An installation frame (4010) is installed on the outer wall of the heat sink (8). A heat sink impeller (4011) is rotatably connected to the inner cavity of the installation frame (4010). A heat sink fan (4013) is installed on the outer wall of the heat sink (8).

4. The energy-saving variable frequency magnetic levitation chiller unit according to claim 3, characterized in that: The end of the heat dissipation impeller (4011) away from the heat dissipation fan (4013) is fixedly equipped with a second pulley (4012), the top of the sealed chamber (406) is fixedly equipped with a thermostatic tube (4014), the outer wall of the thermostatic tube (4014) is fixedly equipped with a heat insulation sleeve (4015), and the outer wall of the heat insulation sleeve (4015) is fixedly equipped with a discharge pipe (4016).

5. The energy-saving variable frequency magnetic levitation chiller unit according to claim 4, characterized in that: The inner cavity of the guide pipe (402) is connected to the inner cavity of the fixed pipe (401). The outer wall of the fixed pipe (401) away from the guide pipe (402) is connected to the outer wall of the outlet pipe (9). The outer diameter of the driven impeller (407) matches the inner diameter of the sealing chamber (406). The inner cavity of the sealing chamber (406) is connected to the inner cavities of the release pipe (405) and the thermostatic pipe (4014).

6. The energy-saving variable frequency magnetic levitation chiller unit according to claim 5, characterized in that: The end of the transmission belt (409) away from the first pulley (408) is rolledly connected to the outer wall of the second pulley (4012), and the transmission belt (409) is made of vulcanized rubber. The mounting positions of the mounting frame (4010) and the cooling fan (4013) correspond to the mounting positions of the heat sink (8).

7. An energy-saving variable frequency magnetic levitation chiller unit according to claim 6, characterized in that: The inner wall of the insulation sleeve (4015) is in contact with the outer wall of the magnetic levitation compressor (5). There are two insulation sleeves (4015), and the two insulation sleeves (4015) are respectively installed on both sides of the outer wall of the magnetic levitation compressor (5).

8. An energy-saving variable frequency magnetic levitation chiller unit according to claim 7, characterized in that: The outer walls of the fixed tube (401), the guide tube (402) and the release tube (405) are all covered with heat-insulating sponge. The sealing chamber (406) and the release tube (405) are installed in a staggered manner. The inner diameter of the guide tube (402) and the release tube (405) is smaller than the inner diameter of the fixed tube (401).

9. An energy-saving variable frequency magnetic levitation chiller unit according to claim 4, characterized in that: The inner cavity of the insulation sleeve (4015) is hollow, and the inner cavity of the discharge pipe (4016) is connected to the inner cavity of the insulation sleeve (4015).

10. An energy-saving variable frequency magnetic levitation chiller unit according to claim 2, characterized in that: The bottom of the heat sink (8) is in contact with the top of the magnetic levitation compressor (5), and the heat sink (8) is made of copper. The end of the connecting pipe (6) away from the condenser (2) is connected to the outer wall of the magnetic levitation compressor (5).

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