An oil-free, environmentally friendly magnetic levitation heat pump unit

Abstract

The present invention relates to the technical field of condensers, and in particular to an environmentally friendly magnetic levitation heat pump unit that operates without oil. An environmentally friendly magnetic levitation heat pump unit that operates without oil includes an evaporator, and the evaporator includes an outer cylinder and a heat exchange mechanism. Each heat exchange mechanism includes a sealing component, a plurality of fixed components, and a plurality of split components. The fixed component includes a fixed tube, and the split component includes a rotating tube. When the amount of cooling medium introduced into the outer cylinder is reduced to below a preset value, the split component changes from a first state to a second state, and the baffle divides the outer cylinder into a first space where gas flows and a second space where gas does not flow, and the sealing component seals the rotating tube in the second state and the fixed tube in the second space, thereby ensuring condensation efficiency. The present invention provides an environmentally friendly magnetic levitation heat pump unit that operates without oil, so as to solve the problem that when the cooling medium introduced into the existing magnetic levitation heat pump is reduced during operation, the cooling efficiency is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of condensers, and in particular to an oil-free operating environmentally friendly magnetic levitation heat pump unit. Background Art

[0002] Magnetic levitation centrifugal heat pump units are key components of modern air conditioning and heating systems. Their core is a magnetic levitation compressor. Based on thermodynamic principles, this unit uses electrical energy to drive the refrigerant circulation, transferring and increasing energy between a low-temperature heat source and a high-temperature heat load. A centrifugal heat pump unit primarily consists of a magnetic levitation centrifugal compressor, an evaporator, a condenser, and an expansion valve. The centrifugal compressor uses the centrifugal force generated by the rotation of the impeller to pressurize and heat the gaseous refrigerant, allowing it to release heat to the environment at a higher pressure. The evaporator absorbs heat from the low-temperature heat source, evaporating the refrigerant and lowering its temperature. The high-pressure, high-temperature refrigerant then enters the condenser, transferring heat to the space or water source to be heated. Finally, after being reduced in pressure, cooled, and throttled by the expansion valve, the refrigerant reenters the evaporator, completing the heat pump cycle. During operation, the pipes vibrate due to fluid flow. This long-term vibration can cause the pipes to frequently impact the openings in the baffles. This not only increases pipe wear but also generates considerable noise.

[0003] For example, the invention patent with announcement number CN119436624B provides a condenser system with integrated temperature control optimization. By adjusting the movement of the slats through the adjustment component, a specific proportion of the connecting holes are docked with the docking port, thereby adjusting the number of heat exchange tubes that are fed with the cooling medium and ensuring the flow rate of the cooling medium. However, the device only controls the number of heat exchange tubes that are fed with the cooling medium, and the heat medium gas will still contact the heat exchange tubes that are not fed with the cooling medium, thereby reducing the effective contact area between the heat medium and the heat exchange copper tube, forming a flow dead zone, hindering the flow of the gaseous refrigerant, and ultimately reducing the cooling efficiency of the condenser. Summary of the Invention

[0004] The present invention provides an oil-free operating environment-friendly magnetic levitation heat pump unit to solve the problem that when the cooling medium introduced into the existing magnetic levitation heat pump is reduced during operation, the cooling efficiency is reduced.

[0005] The present invention provides an oil-free, environmentally friendly magnetic levitation heat pump unit, which adopts the following technical solution: an oil-free, environmentally friendly magnetic levitation heat pump unit, comprising an evaporator, a flash tank, and a compressor that are interconnected. The evaporator comprises an outer tube, an adjustment mechanism, and two heat exchange mechanisms, and the outer tube is arranged horizontally. The heat exchange mechanism is located inside the outer tube, and the two heat exchange mechanisms are distributed along the axial direction of the outer tube. Each heat exchange mechanism comprises a sealing component, a plurality of fixed components, and a plurality of split components. The plurality of fixed components are distributed along the radial direction of the outer tube. Each fixed component comprises a plurality of fixed tubes distributed along the circumference of the outer tube. The plurality of split components are distributed in the vertical direction, and each split component comprises a plurality of rotating tubes distributed in the horizontal direction. Both the fixed tubes and the rotating tubes are arranged along the axial direction of the outer tube, and both the fixed tubes and the rotating tubes contain cooling medium. The rotating tube is rotatable, and a baffle is provided on the rotating tube.

[0006] The dividing assembly has a first state and a second state. In the first state, the baffles on two adjacent rotating tubes are non-contacting. In the second state, the baffles are arranged tangentially along the outer tube, abutting against each other. The baffles divide the outer tube into a first space where gas circulates and a second space where gas does not circulate. Part of the fixed tube is located in the second space. The sealing assembly is used to seal the fixed tube within the second space when the rotating tube is in the second state.

[0007] When the amount of cooling medium required is lower than a preset value, the regulating mechanism changes the dividing assembly from the first state to the second state. Each dividing assembly corresponds to a preset value, and the preset values ​​corresponding to the multiple dividing assemblies from the side wall of the outer cylinder to the middle decrease in sequence.

[0008] Furthermore, each fixed tube and each rotating tube is provided with a heat exchange tube arranged along the axial direction of the outer tube. A liquid inlet box, a liquid storage box, and a liquid outlet box are provided in the outer tube. The liquid inlet box, the liquid storage box, and the liquid outlet box are distributed in sequence along the axial direction of the outer tube. The space between the liquid inlet box and the liquid storage box in the outer tube is the first chamber, and the space between the liquid storage box and the liquid outlet box is the second chamber. The two heat exchange mechanisms are respectively arranged in the first chamber and the second chamber. The ends of the fixed tube, the rotating tube, and the heat exchange tube in the first chamber are respectively connected to the liquid inlet box and the liquid storage box. The ends of the fixed tube, the rotating tube, and the heat exchange tube in the second chamber are respectively connected to the liquid storage box and the liquid outlet box.

[0009] Furthermore, an air inlet is provided on the upper side of the outer tube, the air inlet is communicated with the first chamber, and an air outlet is provided on the lower side of the outer tube, the air outlet is communicated with the second chamber.

[0010] Both the first and second chambers have a first space and a second space. The partitioning assembly in the first chamber is located at the bottom of the first chamber, and the second space in the first chamber is located at the bottom of the first chamber. The partitioning assembly in the second chamber is located at the top of the second chamber, and the second space in the second chamber is located at the top of the second chamber.

[0011] Furthermore, the multiple fixed assemblies divide the interior of the outer tube into a plurality of annular flow channels, arranged sequentially from the inside out. A spiral blade is fixedly mounted on the outside of each fixed tube. The spiral blades in each fixed assembly rotate in the same direction, causing the airflow entering each annular flow channel to rotate along the circumference of the outer tube. The spiral blades in two adjacent fixed assemblies rotate in opposite directions, causing the air in the two adjacent annular flow channels to move in opposite directions.

[0012] Furthermore, the gap between the two uppermost fixed tubes in each fixed assembly within the first chamber serves as an air inlet channel. The air inlet channel, whose length along the circumference of the outer cylinder gradually decreases from top to bottom, is used to guide the gas within each annular flow channel toward the center of the first chamber.

[0013] The gap between the two lowest fixed tubes in each fixed assembly within the second chamber serves as a gas outlet channel. The gas outlet channel gradually increases in length along the circumference of the outer cylinder from top to bottom, facilitating the discharge of the gas-liquid mixture from each annular flow channel through the gas outlet channel.

[0014] Furthermore, the multiple dividing components in the first chamber sequentially block the space in the outer cylinder from top to bottom. The multiple dividing components in the second chamber sequentially block the space in the outer cylinder from bottom to top.

[0015] Each sealing assembly includes multiple connecting plates, arranged in a vertically arranged sequence, and slidably disposed within the liquid storage tank along the axial direction of the outer cylinder. Each connecting plate corresponds to a partition assembly and the second space it seals. Multiple sealing blocks are fixedly mounted on each connecting plate. Each sealing block seals the rotating tube in the corresponding partition assembly and the heat exchange tube in the second space.

[0016] Furthermore, a plurality of connecting rods are fixedly disposed in each liquid storage tank, and the connecting rods are arranged along the axial direction of the outer cylinder. Each connecting plate is slidably disposed on a connecting rod. A spring is fixedly disposed on each connecting rod, and the spring is connected to the connecting plate.

[0017] Furthermore, a spiral groove is formed on each rotating tube corresponding to a blocking block. The adjustment mechanism includes a rotating shaft, a plurality of sliders, and two adjustment assemblies. Each slider is fixedly mounted on a blocking block corresponding to a rotating tube and slidably disposed within a spiral groove.

[0018] The rotating shaft is vertically disposed and rotatably mounted within the liquid storage tank. The two adjustment assemblies are arranged sequentially from top to bottom. The upper adjustment assembly corresponds to the sealing assembly within the first chamber. The lower adjustment assembly corresponds to the sealing assembly within the second chamber. Each adjustment assembly includes a plurality of sector blocks, which are arranged sequentially from top to bottom. The sector blocks are fixedly mounted on the rotating shaft. Each sector block abuts against a connecting plate.

[0019] The upper adjustment assembly corresponds to the first chamber, while the lower adjustment assembly corresponds to the second chamber. For the upper adjustment assembly, the central angles of the multiple sector-shaped blocks decrease from top to bottom. For the lower adjustment assembly, the central angles of the multiple sector-shaped blocks increase from top to bottom, ensuring that the connecting plate closest to the outer cylinder wall is pushed first when the shaft rotates.

[0020] Furthermore, the adjustment mechanism also includes a motor, which is fixedly arranged on the outer cylinder, and the output shaft of the motor is fixedly connected to the rotating shaft.

[0021] Furthermore, a plurality of vent pipes are fixedly installed in the liquid storage tank, which axially penetrate the liquid storage tank and only allow gas to flow between the first chamber and the second chamber. A drainage channel is opened at the bottom of the liquid storage tank, which allows liquid to flow between the first chamber and the second chamber.

[0022] The beneficial effects of the present invention are as follows: The oil-free, environmentally friendly magnetic levitation heat pump unit of the present invention utilizes a regulating mechanism and two heat exchange mechanisms to initially position all of the split components in a first state. A cooling medium is introduced into the fixed and rotating tubes. A gas-liquid mixture is then introduced into the outer tube, where the gas contacts the fixed and rotating tubes and is cooled.

[0023] When the amount of cooling medium introduced into the outer tube decreases to below the maximum preset value, the dividing assembly closest to the side wall of the outer tube changes from the first state to the second state, the baffle is arranged along the tangential direction of the outer tube, and the baffles on the two adjacent rotating tubes abut against each other, and the baffle divides the outer tube into a first space and a second space. The sealing assembly seals the rotating tube in the second state and the fixed tube in the second space.

[0024] Specifically, as the amount of cooling medium in the outer cylinder decreases, the number of fixed and rotating tubes receiving cooling medium decreases accordingly. This ensures the cooling medium's flow rate within these tubes, prevents the accumulation of impurities in the cooling medium, and thus ensures heat exchange efficiency. Furthermore, the baffle blocks the portion of the fixed and rotating tubes not receiving cooling medium, preventing the gas in the outer cylinder from coming into contact with these tubes, thereby ensuring condensation efficiency.

[0025] When the amount of cooling medium introduced into the outer tube continues to decrease, multiple split components are sequentially transformed from the first state to the second state along the direction from the peripheral wall to the center of the outer tube, the area of ​​the second space gradually increases, and the number of blocked fixed tubes and rotating tubes gradually increases, so as to adapt to different amounts of cooling medium introduced into the outer tube while ensuring the condensation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of an oil-free, environmentally friendly magnetic levitation heat pump unit provided by an embodiment of the present invention;

[0028] Figure 2 A schematic structural diagram of an evaporator of an oil-free, environmentally friendly magnetic levitation heat pump unit provided by an embodiment of the present invention;

[0029] Figure 3 for Figure 2 Cross-sectional view along the AA axis;

[0030] Figure 4 for Figure 3 Cross-sectional view along the BB direction;

[0031] Figure 5 for Figure 4 Enlarged view of point E in the middle;

[0032] Figure 6 A cross-sectional view of a liquid storage tank of an oil-free, environmentally friendly magnetic levitation heat pump unit provided by an embodiment of the present invention;

[0033] Figure 7 A schematic structural diagram of an oil-free, environmentally friendly magnetic levitation heat pump unit provided by an embodiment of the present invention;

[0034] Figure 8 for Figure 3 Cross-sectional view in CC direction;

[0035] Figure 9 for Figure 3 Cross-sectional view in the middle DD direction;

[0036] Figure 10 A schematic diagram of a first state of a split assembly of an oil-free, environmentally friendly magnetic levitation heat pump unit provided by an embodiment of the present invention;

[0037] Figure 11 A schematic diagram of a partial structure of an adjustment mechanism of an oil-free, environmentally friendly magnetic levitation heat pump unit provided by an embodiment of the present invention;

[0038] Figure 12 A schematic diagram of a portion of the structure of a heat exchange mechanism of an oil-free, environmentally friendly magnetic levitation heat pump unit provided by an embodiment of the present invention;

[0039] Figure 13 for Figure 12 Enlarged view of point F in the middle.

[0040] In the figure: 102, flash tank; 103, compressor; 110, first chamber; 120, second chamber; 130, first space; 140, second space; 200, outer cylinder; 201, air inlet; 202, air outlet; 203, annular flow channel; 210, rotating tube; 211, baffle; 220, fixed tube; 221, spiral blade; 222, spiral groove; 230, heat exchange tube; 240, liquid storage tank; 241, connecting rod; 242, spring; 243, vent pipe; 244, drainage channel; 300, connecting plate; 301, blocking block; 310, rotating shaft; 320, fan-shaped block; 330, motor. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] Reference Figures 1 to 13 As shown, an embodiment of the present invention provides an oil-free, environmentally friendly magnetic levitation heat pump unit, comprising an interconnected evaporator, a flash tank 102, and a compressor 103. The evaporator comprises an outer cylinder 200, a regulating mechanism, and two heat exchange mechanisms. The outer cylinder 200 is arranged horizontally. The heat exchange mechanisms are located within the outer cylinder 200 and are distributed axially along the outer cylinder 200. Each heat exchange mechanism comprises a sealing assembly, multiple fixing assemblies, and multiple partitioning assemblies.

[0043] Multiple fixed assemblies are distributed radially along the outer cylinder 200. Each fixed assembly includes multiple fixed tubes 220 distributed circumferentially along the outer cylinder 200. Multiple split assemblies are distributed vertically. Each split assembly includes multiple rotating tubes 210 distributed horizontally. Both the fixed tubes 220 and the rotating tubes 210 are arranged axially along the outer cylinder 200. Cooling medium is contained within both the fixed tubes 220 and the rotating tubes 210. The rotating tubes 210 are rotatable about their own axes and are equipped with radially extending baffles 211 on their outer sides.

[0044] The partitioning assembly has a first state and a second state. In the first state, the baffles 211 on two adjacent rotating tubes 210 are not in contact. In the second state, the baffles 211 are arranged tangentially to the outer cylinder 200 and abut against each other. The baffles 211 divide the outer cylinder 200 into a first space 130, through which gas flows, and a second space 140, through which gas does not flow. Part of the fixed tube 220 is located in the second space 140. The sealing assembly is used to seal the rotating tube 210 in the second state and the fixed tube 220 in the second space 140.

[0045] When the required amount of cooling medium falls below a preset value, the adjustment mechanism switches the partitioning assembly from the first state to the second state. There are multiple preset values, one for each partitioning assembly. The preset values ​​decrease from the sidewalls to the middle of the outer tube 200. The largest preset value corresponds to the partitioning assembly closest to the sidewalls of the outer tube 200, and the smallest preset value corresponds to the partitioning assembly closest to the middle of the outer tube 200.

[0046] In the initial state, all the split components are in the first state. A cooling medium is introduced into the fixed tube 220 and the rotating tube 210. A gas-liquid mixture is then introduced into the outer tube 200. The gas contacts the fixed tube 220 and the rotating tube 210 and is cooled.

[0047] When the amount of cooling medium introduced into the outer cylinder 200 decreases to below a maximum preset value, the dividing assembly closest to the side wall of the outer cylinder 200 changes from the first state to the second state. The baffle 211 is arranged along the tangential direction of the outer cylinder 200. The baffles 211 on two adjacent rotating tubes 210 abut against each other. The baffles 211 divide the outer cylinder 200 into the first space 130 and the second space 140. The blocking assembly blocks the rotating tube 210 in the second state and the fixed tube 220 in the second space 140.

[0048] Specifically, when the amount of cooling medium in outer cylinder 200 decreases, the number of fixed tubes 220 and rotating tubes 210 receiving cooling medium decreases accordingly. This ensures the cooling medium's flow rate within fixed tubes 220 and rotating tubes 210, prevents the accumulation of impurities in the cooling medium, and thus ensures heat exchange efficiency. Furthermore, baffles 211 shield the portion of fixed tubes 220 and rotating tubes 210 not receiving cooling medium, preventing the gas in outer cylinder 200 from coming into contact with these fixed tubes 220 and rotating tubes 210, thereby ensuring condensation efficiency.

[0049] When the amount of cooling medium introduced into the outer cylinder 200 continues to decrease, the multiple dividing components are sequentially transformed from the first state to the second state along the direction from the peripheral wall to the center of the outer cylinder 200, the area of ​​the second space 140 gradually increases, and the number of blocked fixed tubes 220 and rotating tubes 210 gradually increases, so as to adapt to different amounts of cooling medium introduced into the outer cylinder 200 while ensuring the condensation efficiency.

[0050] In this embodiment, each fixed tube 220 and each rotating tube 210 is provided with a heat exchange tube 230 arranged axially along the outer tube 200. The outer tube 200 is provided with a liquid inlet tank, a liquid storage tank 240, and a liquid outlet tank. The liquid inlet tank, liquid storage tank 240, and liquid outlet tank are sequentially arranged along the axial direction of the outer tube 200. The space between the liquid inlet tank and the liquid storage tank 240 in the outer tube 200 forms the first chamber 110, and the space between the liquid storage tank 240 and the liquid outlet tank forms the second chamber 120. Two heat exchange mechanisms are disposed in the first chamber 110 and the second chamber 120, respectively. The ends of the fixed tube 220, rotating tube 210, and heat exchange tube 230 within the first chamber 110 communicate with the liquid inlet tank and the liquid storage tank 240, respectively. The ends of the fixed tube 220, rotating tube 210, and heat exchange tube 230 within the second chamber 120 communicate with the liquid storage tank 240 and the liquid outlet tank, respectively.

[0051] The cooling medium passes through the liquid inlet tank and first enters the multiple heat exchange tubes 230 in the first chamber 110. Then, the cooling medium enters the liquid storage tank 240 and then enters the multiple heat exchange tubes 230 in the second chamber 120. Finally, the cooling medium enters the liquid outlet tank and is discharged from the liquid outlet tank.

[0052] In this embodiment, an air inlet 201 is formed on the upper side of the outer tube 200 and communicates with the first chamber 110 , and an air outlet 202 is formed on the lower side of the outer tube 200 and communicates with the second chamber 120 .

[0053] Both the first chamber 110 and the second chamber 120 have a first space 130 and a second space 140. The partition assembly in the first chamber 110 is located at the bottom of the first chamber 110, and the second space 140 in the first chamber 110 is located at the bottom of the first chamber 110. The partition assembly in the second chamber 120 is located at the top of the second chamber 120, and the second space 140 in the second chamber 120 is located at the top of the second chamber 120 to avoid dead zones in gas flow.

[0054] In this embodiment, multiple fixed assemblies divide the interior of the outer tube 200 into a plurality of annular flow channels 203, arranged sequentially from the inside out. A spiral blade 221 is fixedly mounted on the outside of each fixed tube 220. The spiral blades 221 in each fixed assembly rotate in the same direction, causing the airflow entering each annular flow channel 203 to rotate along the circumference of the outer tube 200. The spiral blades 221 in two adjacent fixed assemblies rotate in opposite directions, causing the gas in the two adjacent annular flow channels 203 to move in opposite directions.

[0055] The gas-liquid mixture enters the multiple annular flow channels 203. Since the spiral blades 221 in each fixed assembly are oriented in the same direction, they guide the gas through the annular flow channels 203, rotating around the circumference of the outer cylinder 200. The spiral blades 221 in two adjacent fixed assemblies rotate in opposite directions, resulting in opposite rotations of the gas within the two adjacent annular flow channels 203. This ensures more uniform mixing of the gas within the outer cylinder 200, further improving the uniformity of heat exchange during the condensation process. Furthermore, the spiral blades 221 contact the gas, increasing the contact area between the gas and the heat exchange mechanism, thereby improving the condensation efficiency of the gas.

[0056] In this embodiment, the gap between the two uppermost fixed tubes 220 in each fixed assembly within the first chamber 110 serves as an air inlet channel. The air inlet channel gradually decreases in length from top to bottom along the circumference of the outer cylinder 200, directing the gas within each annular flow channel 203 toward the center of the first chamber 110. Because the partition assembly within the first chamber 110 shields the upper portion of the first chamber 110, and the partition assembly within the second chamber 120 shields the lower portion of the second chamber 120, the gas is directed to the center of the first chamber 110, allowing it to flow from the first chamber 110 into the second chamber 120. This also facilitates the flow of a gas-liquid mixture into each annular flow channel 203 through the air inlet channel.

[0057] The gap between the two lowest fixed tubes 220 in each fixed assembly within the second chamber 120 serves as the gas outlet channel. The gas outlet channel gradually increases in length along the circumference of the outer cylinder 200 from top to bottom, facilitating the discharge of the gas-liquid mixture from each annular flow channel 203 through the gas outlet channel.

[0058] In this embodiment, the multiple dividing components in the first chamber 110 sequentially block the space inside the outer cylinder 200 from top to bottom. The multiple dividing components in the second chamber 120 sequentially block the space inside the outer cylinder 200 from bottom to top.

[0059] Each sealing assembly includes multiple connecting plates 300, distributed sequentially along the vertical direction. These connecting plates 300 are slidably disposed within the liquid storage tank 240 along the axial direction of the outer cylinder 200. Each connecting plate 300 corresponds to a partition assembly and the second space 140 it seals. Multiple sealing blocks 301 are fixedly mounted on each connecting plate 300. Each sealing block 301 seals the rotating tube 210 in the corresponding partition assembly and the heat exchange tube 230 in the second space 140.

[0060] In this embodiment, a plurality of connecting rods 241 are fixedly disposed within each liquid storage tank 240, and the connecting rods 241 are arranged along the axial direction of the outer cylinder 200. Each connecting plate 300 is slidably disposed on a connecting rod 241. A spring 242 is fixedly disposed on each connecting rod 241, and the spring 242 is connected to the connecting plate 300.

[0061] In this embodiment, a spiral groove 222 is defined on each rotating tube 210 corresponding to a blocking block 301. The adjustment mechanism comprises a rotating shaft 310, a plurality of sliders, and two adjustment assemblies. Each slider is fixedly mounted on a blocking block 301 corresponding to a rotating tube 210 and slidably disposed within a spiral groove 222.

[0062] When the partition assembly is in the first state, each baffle 211 in the partition assembly does not block airflow within the annular flow channel 203. Each baffle 211 corresponds to the direction of the airflow, and within the same partition assembly, the inclination angles of the multiple baffles 211 vary. Furthermore, since the multiple baffles 211 within the same partition assembly are parallel to each other when the partition assembly is in the second state, the rotation angles of the baffles 211 within the same partition assembly vary when the partition assembly transitions from the first state to the second state. The pitch of each spiral groove 222 is inversely proportional to the required rotation angle of the corresponding baffle 211, ensuring that the multiple baffles 211 within the same partition assembly remain parallel to each other when the multiple blocking blocks 301 move the same distance.

[0063] The rotating shaft 310 is vertically arranged and rotatably arranged in the liquid storage tank 240. The two adjustment components are distributed in sequence from top to bottom. The adjustment component on the upper side corresponds to the blocking component in the first chamber 110. The adjustment component on the lower side corresponds to the blocking component in the second chamber 120. Each adjustment component includes a plurality of fan-shaped blocks 320, and the plurality of fan-shaped blocks 320 are distributed in sequence from top to bottom. The fan-shaped blocks 320 are fixedly arranged on the rotating shaft 310, and the fan-shaped blocks 320 and the rotating shaft 310 are coaxially arranged. Each fan-shaped block 320 is offset against a connecting plate 300.

[0064] The upper adjustment assembly corresponds to the first chamber 110, while the lower adjustment assembly corresponds to the second chamber 120. For the upper adjustment assembly, the central angles of the multiple sector blocks 320 gradually decrease from top to bottom. For the lower adjustment assembly, the central angles of the multiple sector blocks 320 gradually increase from top to bottom, ensuring that when the shaft 310 rotates, the connecting plate 300 near the circumferential wall of the outer cylinder 200 is pushed first.

[0065] In this embodiment, the adjustment mechanism further includes a motor 330, which is fixedly mounted on the outer cylinder 200. The output shaft of the motor 330 is fixedly connected to the rotating shaft 310. The motor 330 drives the rotating shaft 310 to rotate, which in turn drives the sector blocks 320 to rotate. The sector blocks 320 push the connecting plate 300 away from the rotating shaft 310.

[0066] In this embodiment, multiple vent tubes 243 are fixedly installed within the liquid storage tank 240. These vent tubes 243 extend axially through the liquid storage tank 240, allowing only gas to flow between the first chamber 110 and the second chamber 120. A drainage channel 244 is defined at the bottom of the liquid storage tank 240, allowing liquid to flow between the first chamber 110 and the second chamber 120. Liquid in the gas-liquid mixture and condensed liquid fall to the bottom of the outer cylinder 200. The liquid in the first chamber 110 then flows through the drainage channel 244 into the second chamber 120, ultimately being discharged through the gas outlet 202.

[0067] Working process: In the initial state, the splitter assembly is in the first state. The sealing block 301 does not block the heat exchange tube 230. High-pressure liquid is introduced into the flash tank 102. The flash tank 102 directly injects the intermediate-pressure gas from the top into the compressor 103, and the low-temperature, low-pressure gas-liquid mixture is introduced into the evaporator.

[0068] The cooling medium passes through the liquid inlet tank and first enters the multiple heat exchange tubes 230 in the first chamber 110. Then, the cooling medium enters the liquid storage tank 240 and then enters the multiple heat exchange tubes 230 in the second chamber 120. Finally, the cooling medium enters the liquid outlet tank and is discharged from the liquid outlet tank.

[0069] The low-temperature, low-pressure gas-liquid mixture first enters the first chamber 110 through the air inlet 201, where it comes into contact with the multiple fixed tubes 220 and rotating tubes 210 within the first chamber 110. Because heat exchange tubes 230 are installed within the fixed tubes 220 and rotating tubes 210, the gas is condensed by the fixed tubes 220 and rotating tubes 210. The gas within the first chamber 110 then flows through the multiple vent tubes 243 into the second chamber 120, where it comes into contact with the fixed tubes 220 and rotating tubes 210 within the second chamber 120. The condensed gas is ultimately discharged through the air outlet 202. The low-pressure cold gas generated by the evaporator is passed into the compressor 103.

[0070] The liquid in the gas-liquid mixture and the liquid produced by condensation fall to the bottom of the outer tube 200. The liquid in the first chamber 110 then flows through the drainage channel 244 into the second chamber 120 and is ultimately discharged outward through the gas outlet 202. By providing heat exchange tubes 230 in the first chamber 110 and the second chamber 120, respectively, the length of the heat exchange tubes 230 can be shortened, thereby significantly reducing vibration of the heat exchange tubes 230.

[0071] The gas-liquid mixture that enters the first chamber 110 from the air inlet 201 passes through the air inlet channel formed by each fixed component and then enters the multiple annular flow channels 203. Since the spiral blades 221 in each fixed component have the same direction, the spiral blades 221 are used to guide the gas to rotate around the circumference of the outer cylinder 200 in the annular flow channels 203. The spiral blades 221 in two adjacent fixed components have opposite rotation directions, so the rotation directions of the gas in the two adjacent annular flow channels 203 are opposite, thereby making the gas in the outer cylinder 200 more evenly mixed, further improving the uniformity of heat exchange during the condensation process. At the same time, the spiral blades 221 are in contact with the gas, increasing the contact area between the gas and the heat exchange mechanism, thereby improving the condensation efficiency of the gas.

[0072] When the temperature of the gas discharged from the evaporator is increased, the amount of the gas introduced into the outer tube 200 is kept unchanged while the amount of the cooling medium introduced into the outer tube 200 is reduced.

[0073] like Figure 8 As shown, there are three dividing components, and there are three preset values, namely the first value, the second value and the third value. The first value, the second value and the third value gradually decrease. The third value corresponds to the dividing component close to the middle of the outer tube 200, the first value corresponds to the dividing component farthest from the peripheral wall of the outer tube 200, and the second value corresponds to the dividing component in the middle.

[0074] The motor 330 rotates the rotating shaft 310 at a first angle, a second angle, and a third angle. The first angle, the second angle, and the third angle gradually increase, and the first angle corresponds to the first value. Along the circumferential wall of the outer cylinder 200 toward the center of the outer cylinder 200, the three fan-shaped blocks 320 are, in order, the first fan-shaped block, the second fan-shaped block, and the third fan-shaped block. The three connecting plates 300 are, in order, the first connecting plate, the second connecting plate, and the third connecting plate. The first angle corresponds to the first fan-shaped block, and the first fan-shaped block corresponds to the first connecting plate. The second angle corresponds to the second fan-shaped block, and the second fan-shaped block corresponds to the second connecting plate. The third angle corresponds to the third fan-shaped block, and the third fan-shaped block corresponds to the third connecting plate.

[0075] When the required amount of cooling medium falls below a first value, motor 330 is activated, driving shaft 310 to rotate by a first angle. At this point, the first sector block and the first connecting plate abut against each other, and the first sector plate pushes the first connecting plate away from shaft 310. The blocking block 301 on the first connecting plate cooperates with the rotating tube 210 in the partition assembly located away from the outer cylinder 200 wall. The slider on blocking block 301 slides within spiral groove 222, causing rotating tube 210 to rotate. The partition assembly farthest from the outer cylinder 200 wall transitions from the first state to the second state. When the partition assembly is in the second state, the baffles 211 on two adjacent rotating tubes 210 abut against each other, dividing either the first chamber 110 or the second chamber 120 into a first space 130 connected to the gas and a second space 140 not connected to the gas.

[0076] When the first connecting plate moves, the blocking plate on the first connecting plate blocks both the rotating tube 210 in the split assembly in the second state and the heat exchange tube 230 in the fixed tube 220 in the second space 140. Because the amount of cooling medium required is reduced, the number of heat exchange tubes 230 receiving cooling medium is reduced. Simultaneously, the baffle 211 blocks the area of ​​heat exchange tubes 230 not receiving cooling medium, preventing gas from coming into contact with the fixed tubes 220 not receiving cooling medium, thereby ensuring condensation efficiency. This also ensures the flow rate of cooling medium within the heat exchange tubes 230, preventing the accumulation of impurities in the cooling medium and thus ensuring the heat exchange efficiency of the heat exchange tubes 230.

[0077] As the required amount of cooling medium continues to decrease to a second value, the rotating shaft 310 rotates to a second angle, causing the second sector to align with the second connecting plate and push the second connecting plate to move. The intermediate partition assembly transitions from the first state to the second state. The area of ​​the second space 140 increases, and the number of heat exchange tubes 230 feeding the cooling medium is further reduced to match the amount of cooling medium entering the outer cylinder 200.

[0078] When the required amount of cooling medium continues to decrease to a third value, the rotating shaft 310 rotates to a third angle, and the third sector blocks align with the third connecting plate, pushing the third connecting plate to move. The partition assembly near the center of the outer tube 200 transitions from the first state to the second state. The area of ​​the second space 140 continues to increase, and the number of heat exchange tubes 230 feeding the cooling medium further decreases to match the amount of cooling medium entering the outer tube 200.

[0079] The second space 140 in the first chamber 110 is located at the lower side of the first chamber 110, and the gas inlet 201 is located at the upper side of the first chamber 110. The second space 140 in the second chamber 120 is located at the upper side of the second chamber 120, and the gas outlet 202 is located at the lower side of the second chamber 120 to avoid dead zones for gas flow.

[0080] The above description is only a preferred embodiment of the present invention and is 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 scope of protection of the present invention.

Claims

1. An oil-free, environmentally friendly magnetic levitation heat pump unit comprising an evaporator, a flash tank, and a compressor interconnected, characterized in that: The evaporator includes an outer tube, a regulating mechanism and two heat exchange mechanisms. The outer tube is arranged horizontally. The heat exchange mechanism is located inside the outer tube and the two heat exchange mechanisms are distributed along the axial direction of the outer tube. Each heat exchange mechanism includes a blocking component, multiple fixing components and multiple dividing components. Multiple fixed components are distributed along the radial direction of the outer cylinder; each fixed component includes multiple fixed tubes distributed along the circumference of the outer cylinder; multiple split components are distributed along the vertical direction, and each split component includes multiple rotating tubes distributed along the horizontal direction; the fixed tubes and the rotating tubes are both arranged along the axial direction of the outer cylinder, and both the fixed tubes and the rotating tubes contain cooling medium; the rotating tube is rotatable and is provided with a baffle; The dividing assembly has a first state and a second state. In the first state, the baffles on the two adjacent rotating tubes are not in contact. In the second state, the baffles are arranged along the tangential direction of the outer tube, and the baffles on the two adjacent rotating tubes are against each other. The baffles divide the outer tube into a first space where gas circulates and a second space where gas does not circulate, and part of the fixed tube is in the second space. The blocking assembly is used to block the rotating tube in the second state and the fixed tube in the second space. When the amount of cooling medium required is lower than a preset value, the regulating mechanism changes the dividing assembly from the first state to the second state; each dividing assembly corresponds to a preset value, and the preset values ​​corresponding to the multiple dividing assemblies from the side wall of the outer cylinder to the middle decrease in sequence; Each fixed tube and each rotating tube is provided with a heat exchange tube arranged along the axial direction of the outer tube; a liquid inlet box, a liquid storage box, and a liquid outlet box are provided in the outer tube; the liquid inlet box, the liquid storage box, and the liquid outlet box are sequentially distributed along the axial direction of the outer tube; the space between the liquid inlet box and the liquid storage box in the outer tube is a first chamber, and the space between the liquid storage box and the liquid outlet box is a second chamber; two heat exchange mechanisms are respectively arranged in the first chamber and the second chamber; the ends of the fixed tube, the rotating tube, and the heat exchange tube in the first chamber are respectively connected to the liquid inlet box and the liquid storage box; the ends of the fixed tube, the rotating tube, and the heat exchange tube in the second chamber are respectively connected to the liquid storage box and the liquid outlet box; The multiple dividing components in the first chamber sequentially block the space in the outer cylinder from top to bottom; the multiple dividing components in the second chamber sequentially block the space in the outer cylinder from bottom to top; Each sealing assembly includes a plurality of connecting plates, which are sequentially distributed along the vertical direction and are slidably disposed in the liquid storage tank along the axial direction of the outer cylinder; each connecting plate corresponds to a split assembly and the second space it seals; each connecting plate is fixedly provided with a plurality of sealing blocks; each sealing block seals the rotating tube in the corresponding split assembly and the heat exchange tube in the second space; A spiral groove is formed on each rotating tube corresponding to the blocking block; the adjustment mechanism includes a rotating shaft, a plurality of sliders and two adjustment components; each slider is fixedly mounted on a blocking block corresponding to the rotating tube, and each slider is slidably disposed in a spiral groove; The rotating shaft is vertically arranged and rotatably arranged in the liquid storage tank; the two adjustment assemblies are sequentially distributed from top to bottom; the adjustment assembly on the upper side corresponds to the blocking assembly in the first chamber; the adjustment assembly on the lower side corresponds to the blocking assembly in the second chamber; each adjustment assembly includes a plurality of sector blocks, which are sequentially distributed from top to bottom; the sector blocks are fixedly arranged on the rotating shaft; and each sector block abuts against a connecting plate; The adjusting assembly on the upper side corresponds to the first chamber, and the adjusting assembly on the lower side corresponds to the second chamber; for the adjusting assembly on the upper side, the central angles of the multiple fan-shaped blocks gradually decrease from top to bottom; for the adjusting assembly on the lower side, the central angles of the multiple fan-shaped blocks gradually increase from top to bottom, so that when the rotating shaft is rotated, the connecting plate close to the peripheral wall of the outer cylinder is pushed first.

2. The oil-free environmentally friendly magnetic levitation heat pump unit according to claim 1, characterized in that: An air inlet is provided on the upper side of the outer tube, and the air inlet is communicated with the first chamber; an air outlet is provided on the lower side of the outer tube, and the air outlet is communicated with the second chamber; There is a first space and a second space in both the first chamber and the second chamber; wherein, the dividing component in the first chamber is located at the lower part of the first chamber, and the second space in the first chamber is located at the lower part of the first chamber; the dividing component in the second chamber is located at the upper part of the second chamber, and the second space in the second chamber is located at the upper part of the second chamber.

3. The oil-free environmentally friendly magnetic levitation heat pump unit according to claim 1, characterized in that: Multiple fixed components divide the internal space of the outer cylinder into multiple annular flow channels distributed sequentially from the inside to the outside; a spiral blade is fixedly provided on the outside of each fixed tube, and the spiral blades in each fixed component have the same direction, which is used to make the airflow entering each annular flow channel rotate along the circumference of the outer cylinder; the spiral blades in two adjacent fixed components have opposite rotation directions, which is used to make the movement direction of the gas in the two adjacent annular flow channels opposite.

4. The oil-free environmentally friendly magnetic levitation heat pump unit according to claim 3, characterized in that: The gap between the two uppermost fixed tubes in each fixed assembly within the first chamber serves as an air inlet channel. The length of the air inlet channel decreases from top to bottom along the circumference of the outer cylinder, and is used to guide the gas within each annular flow channel toward the center of the first chamber. The gap between the two fixed tubes at the lowest end of each fixed assembly in the second chamber is the air outlet channel; from top to bottom, the air outlet channel gradually increases in length along the circumference of the outer tube, making it easier for the gas-liquid mixture to be discharged from each annular flow channel through the air outlet channel.

5. The oil-free environmentally friendly magnetic levitation heat pump unit according to claim 1, characterized in that: A plurality of connecting rods are fixedly arranged in each liquid storage tank, and the connecting rods are arranged along the axial direction of the outer cylinder; each connecting plate is slidably arranged on a connecting rod; a spring is fixedly arranged on each connecting rod, and the spring is connected to the connecting plate.

6. The oil-free environmentally friendly magnetic levitation heat pump unit according to claim 5, characterized in that: The regulating mechanism further comprises a motor, which is fixedly arranged on the outer cylinder, and the output shaft of the motor is fixedly connected to the rotating shaft.

7. The oil-free, environmentally friendly magnetic levitation heat pump unit according to claim 1, characterized in that: A plurality of ventilation pipes are fixedly installed in the liquid storage tank, which penetrate the liquid storage tank axially and only allow gas to flow between the first chamber and the second chamber; a drainage channel is opened at the bottom of the liquid storage tank, which allows liquid to flow between the first chamber and the second chamber.

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