A full-season natural cooling magnetic levitation unit

Abstract

The present invention discloses a full-season natural cooling magnetic levitation unit, belonging to the field of heat exchange. A full-season natural cooling magnetic levitation unit includes a heat exchanger, an evaporator, a compressor, a heat exchanger, and a fan; the heat exchanger includes a housing, a heating group longitudinally arranged in the housing, and a central pipe fixedly connected to the middle of the housing; the heating group includes heating units uniformly arranged along the circumference; the heating unit includes an air box communicated with the central pipe and a water tank installed in the air box; a water inlet valve for controlling water inlet and a water outlet valve for controlling water outlet are rotatably connected to the water tank; a plurality of driving units longitudinally arranged and longitudinally sliding in the housing are arranged in the heat exchanger; the driving unit includes a rotating toothed ring and a switching ring coaxially arranged with the central pipe; in this solution, by setting a plurality of independent heating units, the volume of each water tank is relatively small, and the heating speed is fast.

Description

Technical Field

[0001] The present invention belongs to the field of heat exchange, and more specifically, relates to a full-season natural cooling magnetic levitation unit. Background Art

[0002] Magnetic levitation units are mainly applied to the cooling of energy storage machine rooms, and generally the freezing temperature is controlled at about 18°C. During the refrigeration process of the unit, the heat exchanger needs to dissipate heat. And the dissipated heat can be recycled to heat the cold water to form domestic hot water.

[0003] In the existing units, the heat generated by the heat exchanger is directly introduced into the water tank to continuously heat the water in the water tank. And the volume of the water tank is large and the stored water volume is large. When the heat generated by the heat exchanger is insufficient, it is difficult to heat the water in the water tank to the set temperature. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a full-season natural cooling magnetic levitation unit, which can divide the water tank into multiple units for heating respectively.

[0005] A full-season natural cooling magnetic levitation unit of the present invention includes a heat exchanger, an evaporator, a compressor, a heat exchanger, and a fan; the heat exchanger includes a housing, a heating group longitudinally arranged in the housing, and a central tube fixedly connected to the middle of the housing; the heating group includes heating units uniformly arranged in the circumferential direction; the heating unit includes an air box communicated with the central tube and a water tank installed in the air box; a water inlet valve for controlling water inlet and a water outlet valve for controlling water outlet are rotatably connected to the water tank; a plurality of driving units longitudinally arranged and longitudinally sliding in the housing are arranged in the heat exchanger; the driving unit includes a rotating toothed ring and a switching ring coaxially arranged with the central tube; a switching gear meshing with the rotating toothed ring and capable of driving the water inlet valve or the water outlet valve to move is rotatably connected to an eccentric position on the switching ring; when the switching ring is in the middle position, the rotating toothed ring drives the switching ring to rotate synchronously in the circumferential direction; when the switching ring is in the upper or lower extreme position, the switching ring cannot rotate, and the rotating toothed ring drives the switching gear to rotate.

[0006] As a further improvement of the present invention, a rotation stopping plug block capable of being inserted into the outer wall of the air box to prevent the switching ring from rotating is arranged on the switching ring.

[0007] As a further improvement of the present invention, an air inlet pipe communicated with the central tube is arranged on the air box; ventilation holes communicated with the inside of the air box are uniformly arranged on the side wall of the air inlet pipe; an air chamber opposite to the air inlet pipe is arranged on the side wall of the water tank; a piston body is hermetically slidably connected in the air chamber; the piston body is inserted into the air inlet pipe.

[0008] As a further improvement of the present invention, an exhaust pipe is provided on the side wall of the air box; a valve plate capable of closing the exhaust pipe is longitudinally slidably connected inside the air box; a float is provided inside the water tank; a sliding magnet longitudinally slidable synchronously with the float by magnetic force is provided on the outer wall of the water tank; the sliding magnet is connected to the valve plate by a spring; an elastic protrusion is provided on the side wall of the valve plate; a limiting protrusion that abuts against the elastic protrusion to hinder the movement of the valve plate is provided on the inner wall of the air box.

[0009] As a further improvement of the present invention, a water inlet pipe is provided at the upper end of the water tank, and a drain pipe is provided at the lower end; the water inlet valve is arranged inside the water inlet pipe, and the water outlet valve is arranged inside the drain pipe; a water outlet gear is coaxially arranged with the water outlet valve; a water inlet gear is coaxially arranged with the water inlet valve.

[0010] As a further improvement of the present invention, a baffle is longitudinally slidably connected inside the central tube; the baffle is in sealing contact with the inner wall of the central tube; the baffle and the rotating toothed ring move synchronously by magnetic force; a screw rod in threaded transmission connection with the baffle is rotatably connected inside the central tube.

[0011] As a further improvement of the present invention, a limiting groove distributed along the axial direction is provided on the outer wall of the screw rod; elastic pieces distributed along the radial direction of the baffle are provided at the upper end of the baffle; one end of the elastic piece away from the screw rod is fixed to the baffle, and a stop plug capable of being inserted into the limiting groove to relatively fix the baffle and the screw rod is provided at the end close to the screw rod.

[0012] As a further improvement of the present invention, an air inlet connected to the central tube is provided at the upper end of the outer shell; the heat exchanger is connected to the air inlet through a ventilation pipe; a fan is installed inside the ventilation pipe; the elastic piece is arc-shaped; when hot air enters the central tube, the hot air will generate a thrust on the elastic piece, and then the stop plug is inserted into the limiting groove.

[0013] As a further improvement of the present invention, driving magnets are uniformly arranged along the circumferential direction on the outer wall of the baffle; the driving unit further includes a synchronous toothed ring coaxially arranged with the rotating toothed ring; synchronous magnets capable of attracting and tightening with the driving magnets are uniformly arranged along the circumferential direction on the synchronous toothed ring; the synchronous toothed ring is in transmission connection with the rotating toothed ring.

[0014] As a further improvement of the present invention, the driving unit further includes a sensor fixedly connected to the switching gear.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting multiple independent heating units in this solution, the volume of each water tank is relatively small, the heating speed is fast, and according to the water usage demand and the amount of heat generated by the heat exchanger, different numbers of water tanks are heated, avoiding the situation that the hot water temperature does not meet the standard due to the small amount of heat generated by the heat exchanger.

[0016] In this solution, by setting up a float and a valve plate, when there is no water in the water tank, the valve plate closes the exhaust pipe, so that the hot air no longer heats this water tank. Instead, the hot air will heat other water tanks more concentratedly, avoiding waste of heat.

[0017] In this solution, by setting up an air chamber and a piston body, when the water temperature in the water tank reaches the standard, the piston body closes the vent hole, and the hot air in the central pipe no longer heats the water tank. Instead, the water tank is insulated by relying on the residual heat in the air chamber. The hot air in the central pipe can be concentrated to heat the remaining water tanks, improving the heating efficiency and avoiding waste of heat.

[0018] In this solution, the hot air entering the central pipe can not only heat the water in the water tank, but also generate a thrust on the elastic sheet to control whether the stop plug is inserted into the limit groove. Then, when the screw rotates, the screw can drive the baffle to move longitudinally, changing the position of the baffle, so that the hot air cannot enter below the baffle. Thus, the baffle can make each heating group heat layer by layer and be adjusted according to the usage requirements.

[0019] In this solution, by setting up a driving unit, the movement of the rotating gear ring can drive the switching ring and the switching gear to rotate circumferentially synchronously, changing the position of the switching gear so that the switching gear moves to below the specified heating unit. At the same time, the rotating gear ring can also drive the switching gear to rotate self - synchronously. Then, the switching gear can control the opening and closing of the water inlet valve and the water outlet valve, controlling the water inlet and outlet of the water tank.

[0020] The baffle of this solution drives the driving unit to move through a driving magnet. When the baffle rotates, the baffle drives the synchronous gear ring to rotate together. When the baffle moves longitudinally, the baffle drives the driving unit to move longitudinally synchronously. When the driving unit is at the upper limit position, the switching gear controls the opening and closing of the water inlet valve. When the driving unit is at the lower limit position, the switching gear controls the opening and closing of the water outlet valve. Brief Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the present invention;

[0022] Figure 2 is a schematic structural diagram of the heat exchanger of the present invention;

[0023] Figure 3 is a schematic structural diagram of each heating unit of the present invention;

[0024] Figure 4 is a schematic structural diagram of the present invention when the float is at the upper limit position;

[0025] Figure 5 is a schematic structural diagram of the present invention when the float is at the lower limit position;

[0026] Figure 6 is a schematic structural diagram of the driving unit of the present invention;

[0027] Figure 7 This is a schematic structural diagram when the driving unit of the present invention is in the middle position;

[0028] Figure 8 This is a schematic structural diagram when the stop plug of the present invention is inserted into the limit groove.

[0029] Description of the reference numerals in the figure:

[0030] 11. Heat exchanger; 12. Evaporator; 13. Compressor; 14. Heat exchanger; 15. Fan; 2. Housing; 21. Drain outlet; 22. Air inlet; 23. Water inlet; 24. Exhaust outlet; 3. Heating unit; 31. Air tank; 311. Intake pipe; 312. Vent hole; 313. Exhaust pipe; 314. Limit projection; 32. Water tank; 321. Air chamber; 322. Intake pipe; 323. Drain pipe; 324. Water inlet valve hole; 325. Water outlet valve hole; 33. Piston body; 34. Water inlet valve; 341. Water inlet gear; 342. Water inlet through hole; 35. Water outlet valve; 351. Water outlet gear; 352. Water outlet through hole; 36. Float; 37. Sliding magnet; 38. Valve plate; 381. Connection hole; 382. Elastic projection; 39. Spring; 4. Driving unit; 41. Synchronous gear ring; 411. Synchronous magnet; 42. Transmission gear; 421. Contact plate; 43. Rotating gear ring; 44. Switching ring; 441. Stop plug; 45. Switching gear; 451. Connecting gear; 5. Central tube; 51. Through hole; 6. Screw; 61. Limit groove; 7. Baffle; 71. Driving magnet; 72. Elastic piece; 721. Stop plug. Detailed implementation mode

[0031] Specific Embodiment 1: Please refer to Figures 1 - 8A full-season natural cooling magnetic levitation unit, including a heat exchanger 11, an evaporator 12, a compressor 13, a heat exchanger 14, and a fan 15; the heat exchanger 14 includes a housing 2, a heating group longitudinally arranged in the housing 2, and a central tube 5 fixedly connected to the middle of the housing 2; the heating group includes heating units 3 uniformly arranged along the circumferential direction; the heating unit 3 includes an air tank 31 communicated with the central tube 5 and a water tank 32 installed in the air tank 31; a water inlet valve 34 for controlling water inlet and a water outlet valve 35 for controlling water outlet are rotatably connected to the water tank 32; a plurality of driving units 4 longitudinally arranged and longitudinally slidable in the housing 2 are arranged in the heat exchanger 14; the driving unit 4 includes a rotating gear ring 43 and a switching ring 44 coaxially arranged with the central tube 5; a switching gear 45 that is eccentrically rotatably connected to the switching ring 44 and meshes with the rotating gear ring 43 and can drive the water inlet valve 34 or the water outlet valve 35 to move is provided on the switching ring 44; when the switching ring 44 is in the middle position, the rotating gear ring 43 drives the switching ring 44 to rotate synchronously in the circumferential direction, changing the position of the switching gear 45 so that the switching gear 45 faces different heating units 3; when the switching ring 44 is in the upper or lower extreme position, the switching ring 44 cannot rotate, and the rotating gear ring 43 drives the switching gear 45 to rotate, and then the corresponding water inlet valve 34 or water outlet valve 35 moves.

[0032] A rotation stopping plug 441 that can be inserted into the outer wall of the air tank 31 to prevent the switching ring 44 from rotating is provided on the switching ring 44; when the switching ring 44 is in the upper or lower extreme position, the rotation stopping plug 441 is inserted into the outer wall of the air tank 31, and then the switching ring 44 cannot rotate.

[0033] An air inlet pipe 311 communicated with the central tube 5 is provided on the air tank 31; ventilation holes 312 communicated with the inside of the air tank 31 are uniformly arranged on the side wall of the air inlet pipe 311; an air chamber 321 facing the air inlet pipe 311 is provided on the side wall of the water tank 32; a piston body 33 is hermetically slidably connected in the air chamber 321; the piston body 33 is inserted into the air inlet pipe 311; when the temperature inside the water tank 32 changes, the volume of the gas in the air chamber 321 changes, and then the piston body 33 is driven to slide, and the piston body 33 changes the effective air intake area of the ventilation holes 312.

[0034] A plurality of through holes 51 are provided on the side wall of the central tube 5, and one through hole 51 is hermetically inserted into one air inlet pipe 311; volatile gas is stored in the air chamber 321.

[0035] After the temperature of the water in the water tank 32 rises, the gas in the air chamber 321 expands due to heat, and the piston body 33 moves outward to the air chamber 321, and the piston body 33 blocks the ventilation holes 312, so that the effective air intake area of the ventilation holes 312 is reduced, and then the gas entering the air tank 31 is reduced; when the temperature of the water in the water tank 32 reaches the set value, the piston body 33 completely covers the ventilation holes 312.

[0036] An exhaust pipe 313 is provided on the side wall of the air box 31; a valve plate 38 capable of closing the exhaust pipe 313 is longitudinally slidably connected in the air box 31; a float 36 is provided in the water tank 32; a sliding magnet 37 that longitudinally slides synchronously with the float 36 by magnetic force is provided on the outer wall of the water tank 32; the sliding magnet 37 is connected to the valve plate 38 by a spring 39; an elastic protrusion 382 is provided on the side wall of the valve plate 38; a limiting protrusion 314 that abuts against the elastic protrusion 382 to hinder the movement of the valve plate 38 is provided on the inner wall of the air box 31.

[0037] A connection hole 381 communicating with the exhaust pipe 313 is provided on the valve plate 38; when the valve plate 38 is in the upper limit position, the limiting protrusion 314 abuts against the elastic protrusion 382, and the connection hole 381 is aligned with the exhaust pipe 313.

[0038] When the water level in the water tank 32 drops to the limit position, the float 36 and the sliding magnet 37 move synchronously downward to the limit position, the spring 39 generates a downward pulling force on the valve plate 38, and at this time the pulling force is greater than the frictional force between the limiting protrusion 314 and the elastic protrusion 382, so that the valve plate 38 moves downward rapidly, and the valve plate 38 closes the exhaust pipe 313.

[0039] An inlet pipe 322 is provided at the upper end of the water tank 32, and a drain pipe 323 is provided at the lower end; the inlet valve 34 is provided in the inlet pipe 322, and the outlet valve 35 is provided in the drain pipe 323; an outlet gear 351 is coaxially provided on the outlet valve 35; an inlet gear 341 is coaxially provided on the inlet valve 34.

[0040] An inlet valve hole 324 is provided in the inlet pipe 322; an inlet through hole 342 capable of communicating with the inlet valve hole 324 is provided on the inlet valve 34; an outlet valve hole 325 is provided in the drain pipe 323; an outlet through hole 352 capable of communicating with the outlet valve hole 325 is provided on the outlet valve 35.

[0041] A driving unit 4 is installed between two adjacent heating groups; the driving unit 4 can only longitudinally slide within the range between the upper and lower heating units 3. When the driving unit 4 is in the upper limit position, the switching gear 45 meshes with the inlet gear 341; when the driving unit 4 is in the lower limit position, the switching gear 45 meshes with the outlet gear 351.

[0042] A baffle 7 is longitudinally slidably connected in the central pipe 5; the baffle 7 is in sealed contact with the inner wall of the central pipe 5; the baffle 7 and the rotating toothed ring 43 move synchronously by magnetic force; a screw rod 6 that is rotationally connected in the central pipe 5 and is threadedly connected to the baffle 7 is provided.

[0043] The hot air entering the central tube 5 can only enter the heating unit 3 located above the baffle 7, and the hot air cannot enter below the baffle 7, so that each heating group can be heated independently in layers.

[0044] The outer wall of the screw rod 6 is provided with a limit groove 61 distributed along the axial direction; the upper end of the baffle plate 7 is provided with a spring piece 72 distributed along the radial direction of the baffle plate 7; the spring piece 72 is fixed to the baffle plate 7 at one end away from the screw rod 6, and is provided with a stop plug 721 at the end close to the screw rod 6 that can be plugged into the limit groove 61 to fix the baffle plate 7 and the screw rod 6 relatively.

[0045] A motor for driving the screw rod 6 to rotate is fixedly connected inside the housing 2 .

[0046] The upper end of the shell 2 is provided with an air inlet 22 connected to the central tube 5; the heat exchanger 11 is connected to the air inlet 22 through a ventilation pipe; a fan is installed in the ventilation pipe; the spring 72 is arc-shaped; when hot air enters the central tube 5, the hot air will generate thrust on the spring 72, and then the stop plug 721 is plugged into the limit groove 61.

[0047] The fan draws the heat generated by the heat exchanger 11 into the central tube 5 through the ventilation pipe.

[0048] The outer wall of the baffle 7 is evenly provided with driving magnets 71 along the circumferential direction; the driving unit 4 also includes a synchronous gear ring 41 coaxially arranged with the rotating gear ring 43; the synchronous gear ring 41 is evenly provided with synchronous magnets 411 along the circumferential direction that can be mutually attracted with the driving magnets 71; the synchronous gear ring 41 is transmission-connected with the rotating gear ring 43.

[0049] The synchronous gear ring 41 and the rotating gear ring 43 are connected to each other through a transmission gear 42; the transmission gear 42 is rotatably connected in the housing 2; a reset spring is provided between the transmission gear 42 and the housing 2; when the drive unit 4 is not subjected to external force, the reset spring makes the drive unit 4 located in the middle position.

[0050] The transmission gear 42 is provided with abutment plates 421 at the upper and lower ends respectively; the two abutment plates 421 clamp the synchronous gear ring 41 and the rotating gear ring 43 in the middle, so that the synchronous gear ring 41, the transmission gear 42, and the rotating gear ring 43 move synchronously longitudinally.

[0051] The driving unit 4 further includes a sensor fixedly connected to the switching gear 45 .

[0052] The sensor is used to detect whether the switching gear 45 moves to the bottom of the designated heating unit 3 , detect whether the switching gear 45 is located at the middle position or the upper limit position or the lower limit position, and detect the rotation angle of the switching gear 45 .

[0053] The side wall of the outer shell 2 is provided with a drain port 21 communicated with each drain pipe 323 through a hose, and a water inlet 23 communicated with each water inlet pipe 322 through a hose; the water inlet 23 is connected to an external faucet; the drain port 21 is connected to an external water-using device.

[0054] The side wall of the outer shell 2 is provided with an exhaust port 24; after the gas discharged from the exhaust pipe 313 on the air box 31 enters the outer shell 2, it is then discharged to the outside through the exhaust port 24.

[0055] The compressor 13 and the evaporator 12 work together for refrigeration, and the heat exchanger 11 dissipates heat. The fan 15 cools the heat exchanger 11 and dissipates most of the heat to the outside. At the same time, the heat exchanger 14 works to store hot water.

[0056] When it is necessary to drain water from a certain heating unit 3 in the heat exchanger 14, the fan stops working, and no hot air enters the central tube 5. Then the elastic piece 72 causes the stop plug 721 to separate from the limit groove 61. At this time, the motor drives the screw 6 to rotate, and the screw 6 drives the baffle 7 to move longitudinally, so that the baffle 7 moves to face the driving unit 4 below the heating unit 3. At this time, the baffle 7 and the driving unit 4 are on the same horizontal plane, and the driving unit 4 is in the middle position.

[0057] Then the fan works, hot air enters the central tube 5, and the hot air generates a thrust on the elastic piece 72, and the stop plug 721 is inserted into the limit groove 61. Then the motor drives the screw 6 to rotate, and the screw 6 will drive the baffle 7 to rotate synchronously in the circumferential direction. When the driving magnet 71 on the baffle 7 is attracted tightly to the synchronous magnet 411, the baffle 7 drives the synchronous gear ring 41 to rotate together, and the synchronous gear ring 41 drives the rotating gear ring 43 to rotate through the transmission gear 42. Since the driving unit 4 is in the middle position at this time, the rotating gear ring 43 drives the switching ring 44 and the switching gear 45 to move synchronously. Then the switching gear 45 moves below each heating unit 3 until the switching gear 45 moves below the specified heating unit 3.

[0058] Then the hot air stops entering the central tube 5, and the stop plug 721 separates from the limit groove 61. The screw 6 rotates, driving the baffle 7 to move downward. At the same time, the baffle 7 drives the driving unit 4 to move downward synchronously through the driving magnet 71, so that the driving unit 4 moves to the lower limit position. At this time, the rotation stop block 441 is inserted into the outer wall of the air box 31, and the switching ring 44 cannot rotate, and the switching gear 45 meshes with the water outlet gear 351 in the heating unit 3.

[0059] Then, hot air enters the central pipe 5, and the stop plug 721 is inserted into the limit slot 61. The screw rod 6 drives the baffle 7 to rotate synchronously, and the baffle 7 drives the synchronous gear ring 41 and the rotating gear ring 43 to rotate synchronously. Since the switching ring 44 cannot rotate at this time, the rotating gear ring 43 drives the switching gear 45 to rotate self - clockwise. The self - clockwise rotation of the switching gear 45 will drive the water outlet gear 351 to rotate, and then the water outlet valve 35 opens, and the water in the water tank 32 flows out from the drain pipe 323. After the hot water is no longer needed, the screw rod 6 rotates in the reverse direction, causing the water outlet valve 35 to close.

[0060] Similarly, when cold water needs to be replenished into the water tank 32 in a heating unit 3, the screw rod 6 cooperates with the fan to move the baffle 7 to face the driving unit 4 above the heating unit 3 and make the driving unit 4 located in the middle position. Then the baffle 7 drives the synchronous gear ring 41 to rotate, and the synchronous gear ring 41 drives the switching gear 45 to rotate circumferentially along the synchronous gear ring 41, so that the switching gear 45 moves above the heating unit 3. Then the screw rod 6 drives the baffle 7 to move downward, so that the driving unit 4 moves to the lower limit position, the anti - rotation plug 441 is inserted and fixed with the air tank 31, the switching gear 45 meshes with the water inlet gear 341, and then the screw rod 6 drives the baffle 7 to rotate synchronously. The synchronous gear ring 41 drives the switching gear 45 to rotate self - clockwise, and the switching gear 45 drives the water inlet gear 341 to rotate, and the water inlet valve 34 opens, and the external water enters the water tank 32. After the water tank is filled, the screw rod 6 drives the baffle 7 to rotate in the reverse direction, and the water inlet valve 34 closes.

[0061] During the process of the screw rod 6 driving the baffle 7 to move up and down, if the baffle 7 is magnetically attracted to a driving unit 4 at this time, when the baffle 7 moves out of the range of the up - and - down movement of the driving unit 4, the driving magnet 71 will be separated from the synchronous magnet 411, and the driving unit 4 will return to the middle position, and the baffle 7 moves towards other driving units 4.

[0062] When a water tank 32 delivers hot water to the outside, the water level in the water tank 32 gradually decreases, and the float 36 in the water tank 32 gradually moves downward, and then the sliding magnet 37 moves downward synchronously. The elastic force of the spring 39 gradually increases. When the float 36 and the sliding magnet 37 move to the lower limit position, the elastic force of the spring 39 is greater than the friction force between the elastic protrusion 382 and the limit protrusion 314, and then the elastic protrusion 382 breaks through the limitation of the limit protrusion 314, and the valve plate 38 quickly moves downward, and the valve plate 38 closes the exhaust pipe 313. Since the exhaust pipe 313 is closed and a flowing gas path cannot be formed, for the heating unit 3 without water, the hot air will not enter the corresponding air tank 31.

[0063] As water is injected into the water tank 32, the float 36 and the sliding magnet 37 move upward. When the water tank 32 is filled with water, the float 36 and the sliding magnet 37 move to the upper limit position. At this time, the spring 39 between the sliding magnet 37 and the valve plate 38 generates an upward pulling force on the valve plate 38, and the pulling force causes the elastic protrusion 382 to break through the limitation of the limit protrusion 314, and the valve plate 38 moves back to the upper limit position again, and the exhaust pipe 313 is aligned with the connection hole 381.

[0064] As hot air enters the central pipe 5, the hot air will pass through the perforations 51 and the intake pipe 311 and enter the air box 31. The hot air transfers heat to the water tank 32 to heat the water in the water tank 32. As the water temperature in the water tank 32 rises, the gas in the air chamber 321 expands, and then the piston body 33 gradually moves outward of the air chamber 321. The piston body 33 reduces the effective intake area of the ventilation hole 312, thereby reducing the hot air entering the air box 31. When the water temperature in the water tank 32 reaches the set value, the piston body 33 will close the ventilation hole 312, so that the hot air no longer enters the air box 31. The residual temperature in the air box 31 keeps the water tank 32 warm. And the hot air will continuously heat other water tanks 32 to avoid waste of heat.

[0065] When the water in each heating unit 3 in the uppermost (first layer) heating group is not heated up, the screw 6 drives the baffle 7 to move upward to the lower end of the uppermost heating group. At this time, the hot air will not heat the second-layer heating group, and the hot air only heats the uppermost heating group. After the uppermost heating group is heated up, then the second-layer heating group is heated. Each heating unit 3 is heated in a layer-by-layer heating manner.

[0066] When the ambient temperature is 5°C higher, the magnetic levitation compressor is used for refrigeration normally. The heat recovery function can provide hot water at 40 - 45°C for domestic hot water use while refrigerating. When the ambient temperature is lower than 5°C, the unit starts the natural cooling function, stops the compressor operation, and enables the fluorine pump and the EC fan to use the temperature difference between the ambient temperature and the chilled water temperature to make the refrigerant circulate through the temperature change of the medium, so as to achieve natural phase change heat transfer, thereby playing an energy-saving role.

Claims

1. An all-season natural cooling magnetic suspension unit, characterized by: It includes a heat exchanger, an evaporator, a compressor, a heat exchanger, and a fan; the heat exchanger includes an outer shell, a heating group arranged longitudinally in the outer shell, and a central tube fixedly connected to the middle of the outer shell; the heating group includes heating units uniformly arranged along the circumferential direction; the heating unit includes an air box connected to the central tube and a water tank installed in the air box; a water inlet valve for controlling water inlet and a water outlet valve for controlling water outlet are rotatably connected to the water tank; a plurality of longitudinally arranged driving units longitudinally sliding in the outer shell are arranged in the heat exchanger; the driving unit includes a rotating gear ring and a switching ring coaxially arranged with the central tube; a switching gear meshing with the rotating gear ring and capable of driving the movement of the water inlet valve or the water outlet valve is rotatably connected to the switching ring at an eccentric position; when the switching ring is in the middle position, the rotating gear ring drives the switching ring to rotate synchronously in the circumferential direction; when the switching ring is in the upper or lower extreme position, the switching ring cannot rotate, and the rotating gear ring drives the switching gear to rotate; A baffle is longitudinally slidably connected in the central tube; the baffle is sealed against the inner wall of the central tube; the baffle and the rotating gear ring move synchronously through magnetic force; a screw connected to the baffle through threaded transmission is rotatably connected in the central tube; The outer wall of the screw is provided with a limit groove distributed along the axial direction; the upper end of the baffle is provided with a spring sheet distributed along the radial direction of the baffle; the end of the spring sheet away from the screw is fixed to the baffle, and the end close to the screw is provided with a stop plug that can be plugged into the limit groove to fix the baffle and the screw relatively; The upper end of the shell is provided with an air inlet connected to the central tube; the heat exchanger is connected to the air inlet through a ventilation pipe; a fan is installed in the ventilation pipe; The air box is provided with an air inlet pipe connected to the central pipe; the side wall of the air inlet pipe is evenly provided with air vents connected to the inside of the air box; the side wall of the water tank is provided with an air chamber directly facing the air inlet pipe; a piston body is sealed and slidably connected in the air chamber; the piston body is inserted into the air inlet pipe; A driving unit is installed between two adjacent heating groups; the driving unit only slides longitudinally within the range between the upper and lower heating units; The water tank is provided with a water inlet pipe at the upper end and a drain pipe at the lower end; the water inlet valve is provided in the water inlet pipe, and the water outlet valve is provided in the drain pipe; the water outlet valve is provided with a water outlet gear coaxially; the water inlet valve is provided with a water inlet gear coaxially; When the baffle moves to face the driving unit above the heating unit and the driving unit is located at the upper limit position, the switching gear meshes with the water inlet gear; When the baffle moves to face the driving unit below the heating unit and the driving unit is located at the lower limit position, the switching gear meshes with the water outlet gear.

2. The all-season natural cooling magnetic suspension unit according to claim 1, characterized in that: The switching ring is provided with a rotation-stopping plug block which can be plugged into the outer wall of the air box to prevent the switching ring from rotating.

3. The all-season natural cooling magnetic suspension unit according to claim 1, characterized in that: The air box side wall is provided with an exhaust pipe; the air box is longitudinally slidably connected with a valve plate capable of closing the exhaust pipe; the water tank is provided with a float; the water tank outer wall is provided with a sliding magnet which longitudinally slides synchronously with the float through magnetic force; the sliding magnet and the valve plate are connected through a spring; the valve plate side wall is provided with an elastic protrusion; the air box inner wall is provided with a limiting protrusion which abuts against the elastic protrusion and thereby hinders the movement of the valve plate.

4. The all-season natural cooling magnetic suspension unit according to claim 1 is characterized in that: The spring piece is arc-shaped; when hot air enters the central tube, the hot air will generate thrust on the spring piece, thereby the stop plug is plugged into the limit groove.

5. The all-season natural cooling magnetic suspension unit according to claim 4, characterized in that: The outer wall of the baffle is evenly provided with driving magnets along the circumference; the driving unit also includes a synchronous gear ring coaxially arranged with the rotating gear ring; the synchronous gear ring is evenly provided with synchronous magnets that can be mutually attracted with the driving magnets along the circumference; the synchronous gear ring is transmission-connected with the rotating gear ring.

6. The all-season natural cooling magnetic levitation unit according to claim 1, characterized in that: The driving unit also includes a sensor fixedly connected to the switching gear.

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