Water-cooling magnetic suspension variable-frequency centrifugal unit capable of solving uneven defect structure of falling film

Abstract

The invention discloses a water-cooling magnetic suspension variable-frequency centrifugal unit capable of solving a falling film uneven defect structure, and relates to the technical field of water-cooling magnetic suspension variable-frequency centrifugal units. Comprising a rack and an expansion valve, a condenser and an evaporator are installed on the top of the rack, and a control box and a power distribution cabinet are installed on the top of the evaporator. When the water-cooling magnetic suspension variable-frequency centrifugal unit capable of solving the falling film non-uniform defect structure is used, a bevel pinion can drive a bevel gear wheel to rotate through cooperation of a driving motor and an output shaft according to use requirements, so that the bevel gear wheel drives a flow equalizing plate to rotate; the flow equalizing plate is arranged in the evaporator, the second micro through holes in the middle of the flow equalizing plate and the first micro through holes are staggered, at the moment, the flowing gaps of the first micro through holes can be adjusted, and the flowing impact force of the refrigerant can be reduced by reducing the flowing gaps of the refrigerant, so that the refrigerant can flow stably, and it is ensured that the refrigerant can flow uniformly in the evaporator.

Description

Technical Field

[0001] The invention relates to the technical field of water-cooled magnetic suspension variable frequency centrifugal units, in particular to a water-cooled magnetic suspension variable frequency centrifugal unit capable of solving the problem of uneven falling film defect structure. Background Art

[0002] The water-cooled magnetic suspension variable frequency centrifugal unit is a highly efficient and energy-saving central air-conditioning system, which is widely used in large commercial buildings, data centers, hospitals, hotels, etc. It combines water cooling technology and magnetic suspension bearing technology, and has the characteristics of high efficiency and energy saving, environmental friendliness, low noise, stable operation, and long life. Therefore, it can not only help enterprises reduce operating costs, but also respond to the global call for energy conservation and emission reduction.

[0003] Existing water-cooled magnetic levitation variable frequency centrifugal units often cause uneven falling film distribution due to factors such as fluid viscosity differences and local bubble aggregation, resulting in overheating or overcooling in some areas, which in turn affects heat transfer efficiency, increases energy consumption, and may even cause local frost or corrosion. As a result, the refrigerant cannot flow evenly inside the evaporator. Summary of the invention

[0004] The object of the present invention is to provide a water-cooled magnetic suspension variable frequency centrifugal unit that can solve the problem of uneven falling film defect structure, so as to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a water-cooled magnetic suspension variable frequency centrifugal unit capable of solving the uneven falling film defect structure, comprising: a frame and an expansion valve, a condenser and an evaporator are installed on the top of the frame, a control box and a power distribution cabinet are installed on the top of the evaporator, a compressor is installed on the top of the condenser, a first flow pipe is connected between the compressor and the condenser, a second flow pipe is connected between the compressor and the evaporator, a third flow pipe is connected between the condenser and the evaporator, and the expansion valve is installed on the outside of the third flow pipe; A heat exchange tube is installed inside the evaporator, a flow stabilizer is installed on the inner wall of the evaporator, and a hydrophilic coating is sprayed on the surface of the heat exchange tube.

[0006] Preferably, the flow stabilizer is arranged on one side of the second flow tube, and a first micro-through hole is opened through the middle of the flow stabilizer.

[0007] Preferably, a flow balancing plate is installed inside the flow stabilizer, and the size of the flow balancing plate matches the size of the inner wall of the flow stabilizer.

[0008] Preferably, the flow equalizing plate is rotatably connected to a circular slide groove inside the flow stabilizer via a circular slider.

[0009] Preferably, a second micro-through hole is opened through the middle of the current equalizing plate, and the number and size of the first micro-through holes match those of the second micro-through holes.

[0010] Preferably, a large bevel gear is installed on the outer side of the flow equalizing plate, a small bevel gear is meshingly connected to one side of the large bevel gear, and an output shaft penetrating the stabilizer cover is connected in the middle of the small bevel gear.

[0011] Preferably, the output end of the output shaft is connected to a driving motor via a coupling, and the driving motor is installed inside the evaporator via a protective frame.

[0012] Preferably, a guide hole is provided through the middle of the flow equalizing plate, and a movable block is provided inside the guide hole.

[0013] Preferably, one end of the movable block is sleeved with a sleeve, a movable spring is installed inside the sleeve, and the movable block is a conical structure.

[0014] Preferably, the sleeve is fixedly mounted on one side of the flow equalizing plate, and the movable block forms a telescopic structure with the sleeve through the guide hole.

[0015] Compared with the prior art, the beneficial effect of the present invention is that when the water-cooled magnetic levitation variable frequency centrifugal unit that can solve the uneven falling film defect structure is in use, the small bevel gear can drive the large bevel gear to rotate through the cooperation of the driving motor and the output shaft according to the use requirements, so that the large bevel gear drives the flow equalizing plate to rotate, and the second micro-through hole in the middle of the flow equalizing plate is misaligned with the first micro-through hole. At this time, the flow gap of the first micro-through hole can be adjusted, and the flow impact force of the refrigerant can be reduced by reducing the flow gap of the refrigerant, so that the refrigerant can flow smoothly and ensure that the refrigerant can flow evenly in the evaporator. This is the use feature of the water-cooled magnetic levitation variable frequency centrifugal unit that can solve the uneven falling film defect structure.

[0016] 1. The water-cooled magnetic suspension variable frequency centrifugal unit that can solve the uneven falling film defect structure, when the refrigerant is flowing, the small bevel gear and the large bevel gear can drive the flow equalizer to rotate through the cooperation of the driving motor and the output shaft, and the flow equalizer will block the first micro-through hole when rotating, so that the gap for the flow of the refrigerant can be adjusted. By adjusting the refrigerant flow gap, the refrigerant can flow smoothly, slow down the refrigerant flow rate and eliminate the impact force, and at the same time, the refrigerant can flow evenly to the inside of the evaporator; 2. The water-cooled magnetic levitation variable frequency centrifugal unit which can solve the defect structure of uneven falling film can make the flow equalizing plate drive the movable block to rotate when the first micro-through hole in the middle of the flow stabilizer is blocked. When the movable block moves to the position of the first micro-through hole in the flow stabilizer, the movable block will push out the foreign matter in the first micro-through hole under the resetting action of the movable spring, thereby avoiding the uneven flow of refrigerant caused by the blockage of the first micro-through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from a second viewing angle; Figure 3 It is a schematic diagram of the three-dimensional structure of the heat exchange tube of the present invention; Figure 4 It is a schematic diagram of the three-dimensional cross-section structure of the evaporator of the present invention; Figure 5 It is a schematic diagram of a three-dimensional cutaway structure of a flow stabilizer cover according to the present invention from a first viewing angle; Figure 6 It is a schematic diagram of the three-dimensional cross-section structure of the flow stabilizer of the present invention from a second viewing angle; Figure 7 It is a schematic diagram of the three-dimensional cross-section structure of the flow equalizing plate of the present invention; Figure 8 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0018] In the figure: 1, frame; 2, condenser; 3, evaporator; 4, control box; 5, distribution cabinet; 6, compressor; 7, first flow tube; 8, second flow tube; 9, third flow tube; 10, expansion valve; 11, heat exchange tube; 12, flow stabilizer; 13, first micro-through hole; 14, flow equalizing plate; 15, second micro-through hole; 16, large bevel gear; 17, small bevel gear; 18, output shaft; 19, drive motor; 20, protection frame; 21, guide hole; 22, movable block; 23, sleeve; 24, movable spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0020] See also Figure 1 and Figure 2The present invention provides a technical solution: a water-cooled magnetic suspension variable frequency centrifugal unit that can solve the uneven falling film defect structure, comprising: a frame 1 and an expansion valve 10, a condenser 2 and an evaporator 3 are installed on the top of the frame 1, a control box 4 and a power distribution cabinet 5 are installed on the top of the evaporator 3, a compressor 6 is installed on the top of the condenser 2, a first flow pipe 7 is connected between the compressor 6 and the condenser 2, a second flow pipe 8 is connected between the compressor 6 and the evaporator 3, a third flow pipe 9 is connected between the condenser 2 and the evaporator 3, and the expansion valve 10 is installed on the outside of the third flow pipe 9; A heat exchange tube 11 is installed inside the evaporator 3, and a flow stabilizer 12 is installed on the inner wall of the evaporator 3. The surface of the heat exchange tube 11 is sprayed with a hydrophilic coating. The flow stabilizer 12 is arranged on one side of the second flow tube 8. A first micro-through hole 13 is opened in the middle of the flow stabilizer 12. A flow equalizer 14 is installed inside the flow stabilizer 12. The size of the flow equalizer 14 matches the size of the inner wall of the flow stabilizer 12. The flow equalizer 14 is rotatably connected to the circular slide groove inside the flow stabilizer 12 through a circular slider. A second micro-through hole 13 is opened in the middle of the flow equalizer 14. The number and size of the through hole 15, the first micro-through hole 13 and the second micro-through hole 15 are matched. A large bevel gear 16 is installed on the outer side of the flow equalizing plate 14. A small bevel gear 17 is meshed and connected to one side of the large bevel gear 16. The middle of the small bevel gear 17 is connected to an output shaft 18 that passes through the stabilizer cover 12. The output end of the output shaft 18 is connected to a drive motor 19 through a coupling. The drive motor 19 is installed inside the evaporator 3 through a protective frame 20. The flow equalizing plate 14 forms a rotating structure through the large bevel gear 16 and the small bevel gear 17.

[0021] In specific implementation, the water-cooled magnetic suspension variable frequency centrifugal unit that can solve the uneven falling film defect structure, when in use, the refrigerant can enter the evaporator 3 through the second flow tube 8. When the refrigerant enters the evaporator 3 through the second flow tube 8, it will first pass through the flow stabilizer 12 installed on the inner wall of the evaporator 3. A plurality of first micro-through holes 13 are provided in the middle of the flow stabilizer 12. Therefore, the refrigerant will enter the evaporator 3 through the first micro-through holes 13, thereby ensuring that the entire water-cooled magnetic suspension variable frequency centrifugal unit can be used normally; When it is necessary to ensure that the refrigerant can flow out evenly, the drive motor 19 on one side of the protection frame 20 can be started according to the flow rate of the refrigerant. The drive motor 19 will drive the output shaft 18 to rotate through the coupling. When the output shaft 18 rotates, it will drive the small bevel gear 17 in the groove of the stabilizer 12 to rotate. Since the small bevel gear 17 and the large bevel gear 16 are meshed with each other, the small bevel gear 17 will drive the large bevel gear 16 to rotate when it rotates. A flow equalizing plate 14 is installed in the middle of the large bevel gear 16. When the large bevel gear 16 rotates, it will drive the small bevel gear 17 to rotate, so that the large bevel gear 16 drives the flow equalizing plate 14 to rotate along the inside of the stabilizer 12. A second micro-through hole 15 is opened in the middle of the flow equalizing plate 14. When the flow equalizing plate 14 rotates along the inside of the stabilizer 12 , which will cause misalignment between the second micro-hole 15 in the middle of the flow equalizing plate 14 and the first micro-hole 13 between the flow stabilizer 12. At this time, the flow equalizing plate 14 will partially shield the first micro-hole 13, so that the flow gap of the first micro-hole 13 between the flow stabilizer 12 becomes smaller. By adjusting the flow gap of the first micro-hole 13, the refrigerant flow rate can be slowed down and the impact force can be eliminated, and the influence of high-speed refrigerant on liquid distribution can be reduced, so that the refrigerant can flow smoothly, ensuring that the refrigerant can be evenly distributed to each channel after entering the evaporator 3. At the same time, the surface of the heat exchange tube 11 is coated with a hydrophilic material, mainly an acrylic coating, which has good adhesion and hydrophilicity, thereby reducing the liquid contact angle and improving wettability, so that the refrigerant can flow evenly inside the evaporator 3.

[0022] See also Figure 3-Figure 6 and Figure 8 It can be seen that when the flow rate of the refrigerant is too large, the output shaft 18 can be driven to rotate by the driving motor 19. When the output shaft 18 rotates, it will cooperate with the small bevel gear 17 and the large bevel gear 16 to drive the flow equalizing plate 14 to rotate. When the flow equalizing plate 14 rotates, it will adjust the flow gap of the first micro-through hole 13 in the middle of the flow stabilizer 12. By adjusting the flow gap of the first micro-through hole 13, the refrigerant can be buffered, so that the refrigerant can flow smoothly and evenly into the evaporator 3.

[0023] A guide hole 21 is provided through the middle of the flow balancing plate 14, a movable block 22 is provided inside the guide hole 21, a sleeve 23 is sleeved on one end of the movable block 22, a movable spring 24 is installed inside the sleeve 23, the movable block 22 is a conical structure, the sleeve 23 is fixedly installed on one side of the flow balancing plate 14, and the movable block 22 forms a telescopic structure through the guide hole 21 and the sleeve 23.

[0024] In specific implementation, the water-cooled magnetic suspension variable frequency centrifugal unit that can solve the uneven falling film defect structure, when the first micro-through hole 13 in the stabilizer cover 12 is blocked by foreign matter, the small bevel gear 17 can drive the large bevel gear 16 to rotate by the cooperation of the driving motor 19 and the output shaft 18, and at the same time drive the flow equalizing plate 14 to rotate, and a movable block 22 is installed in the guide hole 21 on one side of the flow equalizing plate 14, and the movable block 22 can be retracted into the guide hole 21 by the movable spring 24 inside the sleeve 23. When the guide hole 21 in the middle of the flow equalizing plate 14 is aligned with the first micro-through hole 13 in the stabilizer cover 12, the movable block 22 in the guide hole 21 is not blocked by the stabilizer cover 12, and it will be moved through the movable spring The reset action of the movable spring 24 moves to the first micro-through hole 13 in the middle of the flow stabilizer 12. At this time, the movable block 22 will push out the foreign matter on the inner wall of the first micro-through hole 13 in the flow stabilizer 12, thereby avoiding the blockage of the first micro-through hole 13. At the same time, when the equalizing plate 14 continues to rotate, since the movable block 22 is a conical structure, the inclined surface of the movable block 22 will be squeezed by the inner wall of the first micro-through hole 13 and shrink again into the guide hole 21 of the equalizing plate 14. The above steps are repeated continuously. When the equalizing plate 14 rotates one circle, all the first micro-through holes 13 in the flow stabilizer 12 can be cleaned to avoid the blockage of the first micro-through holes 13 in the flow stabilizer 12 by foreign matter, causing uneven flow of the refrigerant.

[0025] See also Figure 6 and Figure 7 It can be seen that when in use, the movable block 22 can be driven to rotate by the flow equalizing plate 14. When the movable block 22 moves to the position of the first micro-through hole 13 in the flow stabilizer 12, it will be docked with the first micro-through hole 13 through the reset action of the movable spring 24, and the foreign matter in the first micro-through hole 13 will be pushed out of the first micro-through hole 13, thereby avoiding the blockage of part of the first micro-through hole 13 and causing uneven refrigerant flow.

[0026] To sum up, when the water-cooled magnetic levitation variable frequency centrifugal unit that can solve the uneven falling film defect structure is in use, first, the entire water-cooled magnetic levitation variable frequency centrifugal unit can be placed in a stable position through the frame 1, and then the entire water-cooled magnetic levitation variable frequency centrifugal unit can be controlled through the control box 4, and the water-cooled magnetic levitation variable frequency centrifugal unit can be powered through the distribution cabinet 5. At this time, the refrigerant will flow into the evaporator 3 through the second flow pipe 8 between the compressor 6 and the evaporator 3, and then flow back to the condenser 2 through the expansion valve 10 and the third flow pipe 9, and finally flow back to the compressor 6 through the first flow pipe 7. This is repeated continuously, and the entire water-cooled magnetic levitation variable frequency centrifugal unit can work normally. This is the use feature of the water-cooled magnetic levitation variable frequency centrifugal unit that can solve the uneven falling film defect structure. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water-cooled magnetic suspension variable frequency centrifugal unit capable of solving the problem of uneven falling film defect structure, comprising: A frame (1) and an expansion valve (10), characterized in that: a condenser (2) and an evaporator (3) are mounted on the top of the frame (1), a control box (4) and a power distribution cabinet (5) are mounted on the top of the evaporator (3), a compressor (6) is mounted on the top of the condenser (2), a first flow pipe (7) is connected between the compressor (6) and the condenser (2), a second flow pipe (8) is connected between the compressor (6) and the evaporator (3), a third flow pipe (9) is connected between the condenser (2) and the evaporator (3), and the expansion valve (10) is mounted on the outside of the third flow pipe (9); A heat exchange tube (11) is installed inside the evaporator (3), a flow stabilizer (12) is installed on the inner wall of the evaporator (3), and a hydrophilic coating is sprayed on the surface of the heat exchange tube (11).

2. According to claim 1, a water-cooled magnetic suspension variable frequency centrifugal unit capable of solving the uneven falling film defect structure is characterized in that: The flow stabilizer (12) is arranged on one side of the second flow tube (8), and a first micro-through hole (13) is provided through the middle of the flow stabilizer (12).

3. A water-cooled magnetic suspension variable frequency centrifugal unit capable of solving the uneven falling film defect structure according to claim 2, characterized in that: A flow balancing plate (14) is installed inside the flow stabilizing cover (12), and the size of the flow balancing plate (14) matches the size of the inner wall of the flow stabilizing cover (12).

4. A water-cooled magnetic suspension variable frequency centrifugal unit capable of solving the uneven falling film defect structure according to claim 3, characterized in that: The flow balancing plate (14) is rotatably connected to a circular slide groove inside the flow stabilizer (12) via a circular slider.

5. A water-cooled magnetic suspension variable frequency centrifugal unit capable of solving the uneven falling film defect structure according to claim 3, characterized in that: A second micro-through hole (15) is provided through the middle of the flow equalizing plate (14), and the number and size of the first micro-through holes (13) and the second micro-through holes (15) are matched.

6. A water-cooled magnetic suspension variable frequency centrifugal unit capable of solving the uneven falling film defect structure according to claim 3, characterized in that: A large bevel gear (16) is mounted on the outer side of the flow equalizing plate (14), a small bevel gear (17) is meshingly connected to one side of the large bevel gear (16), and an output shaft (18) that passes through the stabilizer cover (12) is connected in the middle of the small bevel gear (17).

7. A water-cooled magnetic suspension variable frequency centrifugal unit capable of solving the uneven falling film defect structure according to claim 6, characterized in that: The output end of the output shaft (18) is connected to a drive motor (19) via a coupling, and the drive motor (19) is installed inside the evaporator (3) via a protection frame (20).

8. The water-cooled magnetic suspension variable frequency centrifugal unit capable of solving the uneven falling film defect structure according to claim 3, characterized in that: A guide hole (21) is provided through the middle of the flow equalizing plate (14), and a movable block (22) is provided inside the guide hole (21).

9. A water-cooled magnetic suspension variable frequency centrifugal unit capable of solving the uneven falling film defect structure according to claim 8, characterized in that: One end of the movable block (22) is sleeved with a sleeve (23), a movable spring (24) is installed inside the sleeve (23), and the movable block (22) is a conical structure.

10. A water-cooled magnetic suspension variable frequency centrifugal unit capable of solving the uneven falling film defect structure according to claim 9, characterized in that: The sleeve (23) is fixedly mounted on one side of the flow equalizing plate (14), and the movable block (22) forms a telescopic structure with the sleeve (23) through the guide hole (21).

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