Variable-frequency centrifugal water cooling machine with efficient heat dissipation function

Abstract

The invention discloses an efficient heat dissipation frequency conversion centrifugal water cooler, and relates to the technical field of heat dissipation type water coolers, the efficient heat dissipation frequency conversion centrifugal water cooler comprises a shell, a temperature control module and a multi-stage pressurizer, and the temperature control module is installed at the top end of the outer wall of the shell; the temperature control module comprises a temperature sensor, a mechanical rod and a controller; a multi-stage pressurizer is arranged on the inner wall of the shell; the multi-stage pressurizer comprises a first-stage pressurizer, a second-stage pressurizer and a third-stage pressurizer. By installing the temperature control module and the multi-stage pressurizer, the multi-stage pressurizer is adjusted according to temperature control to achieve the optimal condensation temperature difference of a refrigerant, it is ensured that the release latent heat efficiency of the refrigerant in the condensation stage is maximized, the heat dissipating capacity of the refrigerant per unit mass is improved, the situation that the exhaust temperature is too high or insufficient due to excessive compression is avoided, and the service life of the refrigerant is prolonged. Efficient matching under the full-load working condition is achieved, and the problems that in an existing system, compressor operation parameters are fixed, and the condensation temperature difference cannot be adjusted in a self-adaptive mode are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation type water chillers, and specifically to a variable frequency centrifugal water chiller with high-efficiency heat dissipation. Background Art

[0002] In the field of industrial refrigeration, as a core device, the heat dissipation performance of a variable frequency centrifugal water chiller directly affects the system energy efficiency and operation stability. In traditional technologies, compressors mostly adopt a fixed-stage design and cannot dynamically match the optimal condensation temperature difference of the refrigerant according to real-time working conditions, which leads to low latent heat release efficiency of the refrigerant. Especially under partial load conditions, over-compression or under-compression is likely to occur, resulting in low heat dissipation efficiency, energy waste, and equipment loss.

[0003] Patent CN113993361B discloses a refrigerant heat dissipation system for a chiller frequency converter, and the above patent realizes reducing the condensation phenomenon of the frequency converter heat dissipation module when the refrigerant temperature is low.

[0004] The above patent realizes reducing the condensation phenomenon of the frequency converter heat dissipation module when the refrigerant temperature is low, but there is still room for optimization in the high-efficiency heat dissipation of the water chiller.

[0005] Therefore, this application proposes a variable frequency centrifugal water chiller with high-efficiency heat dissipation that can dynamically match the optimal condensation temperature difference of the refrigerant. Summary of the Invention

[0006] The purpose of the present invention is to provide a variable frequency centrifugal water chiller with high-efficiency heat dissipation to solve the technical problem in the above background art that compressors in traditional technologies mostly adopt a fixed-stage design and cannot dynamically match the optimal condensation temperature difference of the refrigerant according to real-time working conditions.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A variable frequency centrifugal water chiller with high-efficiency heat dissipation, including a housing, a temperature control module, and a multi-stage pressurizer. A temperature control module is installed at the top end of the outer wall of the housing; The temperature control module includes: a temperature sensor, a mechanical rod, and a controller; A multi-stage pressurizer is arranged on the inner wall of the housing; The multi-stage pressurizer includes: a primary pressurizer, a secondary pressurizer, and a tertiary pressurizer; The temperature sensor is connected to the controller through a data line embedded in the pipe wall. A mechanical rod is installed at the bottom end of the outer wall of the controller, and the bottom end of the outer wall of the mechanical rod is installed on the housing. The connection line of the multi-stage pressurizer passes through the housing and the mechanical rod and is connected to the controller; The primary pressurizer is connected to the secondary pressurizer through a connecting rod, and the secondary pressurizer is connected to the tertiary pressurizer through a connecting rod.

[0008] Preferably, a connecting shaft penetrates through the multi-stage pressurizer; The connecting shaft includes: a bearing, a first-stage telescopic slider, a second-stage telescopic slider, and a third-stage telescopic slider; The outer wall side of the connecting shaft fits with the inner wall of the bearing. There are six telescopic sliders on the outer wall side of the connecting shaft, above the bearing. Two telescopic sliders per stage are arranged left and right on the outer wall of the connecting shaft. On both sides of the inner wall of each stage of the multi-stage pressure booster, there are card slots, a total of six card slots. The two card slots of each stage mesh with the telescopic sliders of each stage.

[0009] Preferably, the first-stage pressure booster includes: a sealing ring, a chassis, an impeller, a blade cover, and a connecting rod; The inner wall of the sealing ring is embedded with the connecting shaft. The top of the outer wall of the sealing ring is installed with a chassis. The top of the outer wall of the chassis is installed with an impeller core. There are two card slots on the inner wall of the impeller core. The connecting shaft is embedded in the inner wall of the impeller core. The first-stage telescopic slider on the connecting shaft meshes with the two card slots in the inner wall of the impeller core. There are eight impellers on the outer wall side of the impeller core. The top of the outer wall of the impeller core is installed with a blade cover. The top of the outer wall of the blade cover is installed with four connecting rods. The four connecting rods are placed in a square shape. The top of the outer wall of the connecting rod is installed with the chassis of the second-stage pressure booster. The top of the outer wall of the connecting rod of the second-stage pressure booster is installed with the chassis of the third-stage pressure booster. The combination method of the second-stage pressure booster and the third-stage pressure booster is the same as that of the first-stage pressure booster.

[0010] Preferably, a pressure outlet pipe is connected to the outer wall side of the housing. The other end of the pressure outlet pipe is installed with a third flange. The third flange and the fourth flange are connected by eight bolts. The fourth flange is installed at one end of the condensation inlet pipe. The other end of the condensation inlet pipe is arranged at the top of the outer wall of the condensation tank. A temperature sensor is installed on the inner wall side of the condensation tank. A spiral pipe is arranged inside the condensation tank. A cooling water inlet pipe and a cooling water outlet pipe are respectively arranged on both sides of the outer wall of the condensation tank. The cooling water inlet pipe is connected to one end of the spiral pipe. The other end of the spiral pipe is connected to the cooling water outlet pipe. A condensation outlet pipe is arranged at the bottom of the outer wall of the condensation tank. The other end of the condensation outlet pipe is connected to a throttle valve. The other end of the throttle valve is connected to the refrigerant inlet pipe.

[0011] Preferably, a gas suction port is arranged on the outer wall side of the housing; The gas suction port includes: a suction housing, a fan, and fan blades; The inner wall of the gas suction port fits with the outer wall of the suction housing. A fan is arranged inside the suction housing. Four fan blades are installed on the outer wall side of the fan. A second flange is installed on the outer wall side of the gas suction port. The second flange and the first flange are connected and fixed by bolts. The first flange is installed at one end of the refrigerant outlet pipe. The other end of the refrigerant outlet pipe is arranged at the top of the outer wall of the evaporation tank. A refrigerant inlet pipe is arranged at the bottom of the outer wall of the evaporation tank. An inlet pipe and an outlet pipe are arranged on the outer wall side of the evaporation tank. The inlet pipe and the outlet pipe are arranged side by side.

[0012] Preferably, a cooling water inlet pipe is installed on the side of the outer wall of the condensation tank. The other end of the cooling water inlet pipe is arranged on the side of the outer wall of the circulating water pump. A water pump inlet pipe is also arranged on the side of the outer wall of the circulating water pump. A flange is installed at the far end of the water pump inlet pipe. The flange connects and fixes the water delivery pipe and the water pump inlet pipe. The other end of the water delivery pipe is connected to the outlet pipe of the cooling box.

[0013] Preferably, a cooling water outlet pipe is installed on the side of the outer wall of the condensation tank. A fifth flange is installed at the other end of the cooling water outlet pipe. The fifth flange is tightly connected to the sixth flange through bolts. The sixth flange is installed at one end of the inlet pipe of the cooling box. The other end of the inlet pipe of the cooling box is arranged on the side of the outer wall of the cooling box.

[0014] Preferably, the other end of the inlet pipe of the cooling box is arranged on the side of the outer wall of the cooling box. The water delivery pipe is connected to the inlet pipe of the cooling box. The other end of the water delivery pipe is closed. Ten sprayers are arranged on the side of the outer wall of the water delivery pipe. The ten sprayers are divided into two groups, with five in each group, and are respectively arranged on both sides of the outer wall of the water delivery pipe. Nozzles on the outer wall of the sprayers are provided with a spray port in four directions.

[0015] Preferably, fillers are arranged inside the cooling box. The fillers are honeycomb structures made of plastics, resistant to chemical corrosion, with smooth surfaces and not easy to scale. They can increase the contact area between water and air, improve the heat exchange efficiency, disperse the water flow into fine water droplets or thin films, and accelerate evaporation and heat dissipation. A collection port is arranged at the bottom of the fillers. The collection port is connected to the outlet pipe of the cooling box. A flange is installed at the other end of the outlet pipe of the cooling box. Through the flange, the outlet pipe of the cooling box is tightly connected to the water delivery pipe. The other end of the water delivery pipe is connected to the water pump inlet pipe through a flange.

[0016] Preferably, a box cover is installed at the top of the outer wall of the cooling box. A heat dissipation port is arranged at the top of the outer wall of the box cover. A heat dissipation fan is arranged inside the heat dissipation port. There are four fan blades inside the heat dissipation fan. The roots of the fan blades are rigidly connected to the motor shaft through flanges. The four fan blades are made of high-strength aluminum alloy. Each single blade is in a curved airfoil shape. The leading edge of the blade adopts a streamline arc surface to reduce the intake resistance, and the trailing edge is designed to be gradually thinner to reduce the generation of eddy currents. The four-blade layout forms a symmetrical air flow channel during rotation, which can not only balance the axial thrust, reduce wear, but also reduce the loss of air backflow.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By installing a temperature control module and a multi-stage pressure booster, the present invention realizes adjusting the multi-stage pressure booster according to the temperature control to achieve the best condensation temperature difference of the refrigerant, ensures the maximization of the latent heat release efficiency of the refrigerant during the condensation stage, improves the heat dissipation of the refrigerant per unit mass, avoids the problem of too high or insufficient exhaust temperature caused by excessive compression, realizes the efficient matching under full load conditions, and solves the problem that the operating parameters of the compressor in the existing system are fixed and the condensation temperature difference cannot be adjusted adaptively. 2. The present invention realizes the automatic adjustment of a multi-stage pressure booster and stage matching by installing a connecting shaft, a telescopic slider, and a card slot, solving the problems of lag in working condition matching and sudden drop in low-load efficiency caused by the existing pressure booster relying on manual setting or single-frequency conversion adjustment. 3. The present invention realizes the forced convection circulation and efficient heat exchange of cooling water in the condensation tank by installing a circulating water pump and a spiral tube, solving the problem of low heat dissipation efficiency caused by large flow resistance of cooling water and insufficient heat exchange area in the existing condensation system, and ensuring the stable and efficient operation of the condensation process. 4. The present invention realizes the efficient evaporation heat dissipation of cooling water by installing a cooling fan, a sprayer, and packing, solving the problems of slow natural convection heat dissipation and large influence by ambient temperature in the traditional cooling box, and constructing an efficient closed cooling water circulation system to ensure a stable cold source supply for the condensation link. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic three-dimensional structure diagram of the present invention; Figure 2 is a schematic side structure diagram of the present invention; Figure 3 is a schematic structure diagram of the multi-stage pressure booster of the present invention; Figure 4 is a schematic structure diagram of the first-stage pressure booster of the present invention; Figure 5 is a schematic structure diagram of the telescopic slider of the present invention; Figure 6 is a schematic structure diagram of the spiral tube of the present invention; Figure 7 is a schematic structure diagram of the sprayer of the present invention; Figure 8 is a partial schematic diagram of the controller of the present invention.

[0019] In the figure: 1. Evaporation tank; 2. Water inlet pipe; 3. Water outlet pipe; 4. Refrigerant inlet pipe; 5. Refrigerant outlet pipe; 6. First flange; 7. Second flange; 8. Suction gas; 9. Outer shell; 10. Mechanical rod; 11. Controller; 12. Pressurized outlet pipe; 13. Third flange; 14. Fourth flange; 15. Condensation inlet pipe; 16. Condensation tank; 17. Condensation outlet pipe; 18. Cooling water inlet pipe; 19. Circulating water pump; 20. Water pump inlet pipe; 21. Cooling water outlet pipe; 22. Fifth flange; 23. Cooling box inlet pipe; 24. Cooling box; 25. Box cover; 26. Heat dissipation port; 27. Heat dissipation fan; 28. Cooling box outlet pipe; 29. Suction housing; 30. Fan; 31. Fan blade; 32. Bearing; 33. Connecting shaft; 34. Sealing ring; 35. Chassis; 36. Impeller; 37. Vane cover; 38. Primary pressure intensifier; 39. Connecting rod; 40. Secondary pressure intensifier; 41. Tertiary pressure intensifier; 42. Spiral tube; 43. Temperature sensor; 44. Sprayer; 45. Spray nozzle; 46. Sixth flange; 47. Primary telescopic slider; 48. Secondary telescopic slider; 49. Tertiary telescopic slider. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Please refer to Figure 1 、 Figure 2 and Figure 3 , an embodiment provided by the present invention: a variable-frequency centrifugal water-cooled machine with efficient heat dissipation, wherein a gas suction device 8 is arranged on the side surface of the outer wall of the housing 9; the gas suction device 8 includes: a suction housing 29, a fan 30 and fan blades 31; The inner wall of the gas suction device 8 is fitted with the outer wall of the suction housing 29. A fan 30 is arranged inside the suction housing 29. Four fan blades 31 are installed on the side surface of the outer wall of the fan 30. A second flange 7 is installed on the side surface of the outer wall of the gas suction device 8. The second flange 7 and the first flange 6 are fixedly connected by bolts. The first flange 6 is installed at one end of the refrigerant outlet pipe 5. The other end of the refrigerant outlet pipe 5 is arranged at the top end of the outer wall of the evaporation tank 1. A refrigerant inlet pipe 4 is arranged at the bottom end of the outer wall of the evaporation tank 1. A water inlet pipe 2 and a water outlet pipe 3 are arranged on the side surface of the outer wall of the evaporation tank 1. The water inlet pipe 2 and the water outlet pipe 3 are arranged side by side; Further, the water that absorbs heat enters the evaporation tank 1 from the water inlet pipe 2. The water inlet pipe 2 is connected to the U-shaped pipe in the evaporation tank 1. The other end of the U-shaped heat exchange pipe is connected to the water outlet pipe 3. The water inlet pipe 2 is fixed to the tube sheet interface at the front end of the evaporation tank 1 by a flange connection method. The internal diversion channel is directly communicated with the U-shaped heat exchange pipe in the evaporation tank 1. The U-shaped heat exchange pipe is bent from a copper pipe. The horizontal section is evenly distributed in the bottom area of the evaporation tank 1. The two vertical sections at both ends are respectively welded to the pipe cavities of the water inlet pipe 2 and the water outlet pipe 3 to form a closed-loop heat-carrying fluid channel; The evaporation tank 1 is filled with liquid refrigerant R32. The liquid refrigerant R32 covers the surface of the U-shaped pipe. The liquid refrigerant R32 absorbs the heat dissipated by the U-shaped pipe in the evaporation tank 1, and the temperature gradually rises. When the liquid refrigerant R32 reaches the saturation temperature, it gradually starts to vaporize. The vaporized refrigerant R32 rises in the evaporation tank 1. At the same time, the gas suction device 8 is started, and the fan 30 starts to rotate. The four fan blades 31 on the side surface of the outer wall of the fan 30 form an air suction flow through rotation. At this time, the gaseous refrigerant R32 at the top end inside the evaporation tank 1 is attracted by the air suction flow, passes through the refrigerant outlet pipe 5 and enters the gas suction device 8. The gaseous refrigerant R32 is sucked into the multi-stage pressurizer under the action of the gas suction device 8.

[0024] Please refer to Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 8 , an embodiment provided by the present invention: a variable-frequency centrifugal water-cooled machine with efficient heat dissipation, including a housing 9, a temperature control module and a multi-stage pressurizer. A temperature control module is installed at the top end of the outer wall of the housing 9; The temperature control module includes: a temperature sensor 43, a mechanical rod 10 and a controller 11; The inner wall of the outer shell 9 is provided with a multi-stage pressure booster; the multi-stage pressure booster includes: a primary pressure booster 38, a secondary pressure booster 40, and a tertiary pressure booster 41; The temperature sensor 43 is connected to the controller 11 through a data line embedded in the pipe wall. The bottom end of the outer wall of the controller 11 is equipped with a mechanical rod 10. The bottom end of the outer wall of the mechanical rod 10 is installed on the outer shell 9. The connecting wires of the multi-stage pressure booster pass through the outer shell 9 and the mechanical rod 10 and are connected to the controller 11; the primary pressure booster 38 is connected to the secondary pressure booster 40 through a connecting rod 39, and the secondary pressure booster 40 is connected to the tertiary pressure booster 41 through a connecting rod 39; The inside of the multi-stage pressure booster is penetrated by a connecting shaft 33; the connecting shaft 33 includes: a bearing 32, a primary telescopic slider 47, a secondary telescopic slider 48, and a tertiary telescopic slider 49; The side surface of the outer wall of the connecting shaft 33 fits with the inner wall of the bearing 32. A total of six telescopic sliders are provided on the side surface of the outer wall of the connecting shaft 33. The six telescopic sliders are above the bearing 32. Two telescopic sliders are arranged left and right on the outer wall of the connecting shaft 33 for each stage. Two card slots are provided on both sides of the inner wall of each stage of the multi-stage pressure booster, for a total of six card slots. The two card slots of each stage mesh with the telescopic sliders of each stage; The primary pressure booster 38 includes: a sealing ring 34, a chassis 35, an impeller 36, a blade cover 37, and a connecting rod 39; The inner wall of the sealing ring 34 is embedded with the connecting shaft 33. The top end of the outer wall of the sealing ring 34 is installed with a chassis 35. The top end of the outer wall of the chassis 35 is installed with an impeller core. Two card slots are provided on the inner wall of the impeller core. The connecting shaft 33 is embedded in the inner wall of the impeller core. The primary telescopic slider 47 on the connecting shaft 33 meshes with the two card slots in the inner wall of the impeller core. Eight impellers 36 are provided on the side surface of the outer wall of the impeller core. The top end of the outer wall of the impeller core is installed with a blade cover 37. The top end of the outer wall of the blade cover 37 is installed with four connecting rods 39. The four connecting rods 39 are placed in a square shape. The top end of the outer wall of the connecting rod 39 is installed with the chassis 35 of the secondary pressure booster 40. The top end of the outer wall of the connecting rod 39 of the secondary pressure booster 40 is installed with the chassis 35 of the tertiary pressure booster 41. The combination method of the secondary pressure booster 40 and the tertiary pressure booster 41 is the same as that of the primary pressure booster 38; Further, the controller 11 is connected to the temperature sensor 43 through a data line embedded in the pipe wall. The temperature sensor 43 detects the temperature in the condensation tank 16 in real time. After receiving the data transmitted by the temperature sensor 43, the controller 11 compares it with a preset threshold. When the temperature in the condensation tank 16 is lower than 20 degrees, the controller 11 controls the multi-stage pressure booster to start the first-stage pressure booster 38 through a connecting line. When the controller 11 detects that the temperature in the condensation tank 16 is between 20 degrees and 30 degrees, the controller 11 controls the multi-stage pressure booster to start the first-stage pressure booster 38 and the second-stage pressure booster 40 through a connecting line. When the controller 11 detects that the temperature in the condensation tank 16 is above 30 degrees, the controller 11 controls the multi-stage pressure booster to start the first-stage pressure booster 38, the second-stage pressure booster 40, and the third-stage pressure booster 41 through a connecting line; When the temperature in the condensation tank 16 is lower than 20 degrees, the controller 11 controls the multi-stage pressure booster to start the first-stage pressure booster 38 through a connecting line. The proximal end of the connecting shaft 33 is connected to the motor through a bearing 32. The sealing ring 34 embedded in the outer wall of the connecting shaft 33 is fixed in the housing 9. The two first-stage telescopic sliders 47 at the top of the connecting shaft 33 extend outwards and engage with two slots provided on the inner wall of the impeller core. At this time, the motor starts to drive the connecting shaft 33 to rotate. The rotation of the connecting shaft 33 drives the impeller core in the first-stage pressure booster 38 to rotate through the engagement of the slot and the first-stage telescopic slider 47. The rotation of the impeller core drives the four impellers 36 provided on the side to rotate. The rotation of the impellers 36 drives the gaseous refrigerant R32 to flow. The refrigerant R32 leaves the impellers 36 under high-speed rotation and enters the annular channel beside the first-stage pressure booster 38. The flow area of the annular channel gradually increases backwards. The other end of the annular channel is connected to the pressurized outlet pipe 12. According to Bernoulli's equation, the flow velocity decreases and the pressure increases. The gaseous refrigerant R32 is pressurized by the first-stage pressure booster 38. At the same time, the impellers 36 do work on the refrigerant R32, raising the temperature of R32 to 30 degrees. The high-temperature and high-pressure gaseous R32 is discharged through the pressurized outlet pipe 12; When the temperature in the condensation tank 16 is between 20 degrees and 30 degrees, the controller 11 controls the multi-stage pressure booster to start the first-stage pressure booster 38 and the second-stage pressure booster 40 through the connecting wire. The first-stage telescopic slider 47 and the second-stage telescopic slider 48 at the top of the connecting shaft 33 extend outwards. The first-stage telescopic slider 47 meshes with the two card slots on the inner wall of the impeller core in the first-stage pressure booster 38, and the second-stage telescopic slider 48 meshes with the two card slots on the inner wall of the impeller core in the second-stage pressure booster 40. At this time, the motor starts to drive the connecting shaft 33 to rotate. The rotation of the connecting shaft 33 drives the impeller cores in the first-stage pressure booster 38 and the second-stage pressure booster 40 to rotate through the meshing of the card slots and the telescopic sliders. The impeller 36 drives the gaseous refrigerant R32 to flow under rotation. At this time, the annular channel beside the first-stage pressure booster 38 is closed, and the first-stage pressure booster 38 sends the pressurized R32 into the second-stage pressure booster 40 for further pressurization. The refrigerant R32 leaves the impeller 36 under high-speed rotation and comes into the annular channel beside the second-stage pressure booster 40. The other end of the annular channel is connected to the pressurized outlet pipe 12, and finally the high-temperature and high-pressure gaseous R32 is discharged through the pressurized outlet pipe 12; When the temperature in the condensation tank 16 is above 30 degrees, the controller 11 controls the multi-stage pressure booster to start the first-stage pressure booster 38, the second-stage pressure booster 40 and the third-stage pressure booster 41 through the connecting wire. The first-stage telescopic slider 47, the second-stage telescopic slider 48 and the third-stage telescopic slider 49 at the top of the connecting shaft 33 extend outwards. The telescopic sliders at each stage mesh with the two card slots on the inner wall of the impeller core in the pressure booster at each stage. At this time, the motor starts to drive the connecting shaft 33 to rotate. The rotation of the connecting shaft 33 drives the impeller cores in the first-stage pressure booster 38, the second-stage pressure booster 40 and the third-stage pressure booster 41 to rotate through the meshing of the card slots and the telescopic sliders. The impeller 36 drives the gaseous refrigerant R32 to flow under rotation. At this time, the annular channels beside the first-stage pressure booster 38 and the second-stage pressure booster 40 are closed. The first-stage pressure booster 38 sends the pressurized R32 into the second-stage pressure booster 40 for pressurization, and the second-stage pressure booster 40 sends the pressurized R32 into the third-stage pressure booster 41 for pressurization. The refrigerant R32 leaves the impeller 36 under high-speed rotation and comes into the annular channel beside the third-stage pressure booster 41. The other end of the annular channel is connected to the pressurized outlet pipe 12, and finally the high-temperature and high-pressure gaseous R32 is discharged through the pressurized outlet pipe 12.

[0025] Please refer to Figure 1 、 Figure 2 and Figure 6, an embodiment provided by the present invention: a variable-frequency centrifugal water-cooled machine with efficient heat dissipation. A pressurized outlet pipe 12 is connected to the side of the outer wall of the housing 9. The other end of the pressurized outlet pipe 12 is equipped with a third flange 13. The third flange 13 and the fourth flange 14 are connected by eight bolts. The fourth flange 14 is installed at one end of the condensation inlet pipe 15. The other end of the condensation inlet pipe 15 is arranged at the top of the outer wall of the condensation tank 16. A temperature sensor 43 is installed on the side of the inner wall of the condensation tank 16. A spiral pipe 42 is arranged inside the condensation tank 16. Cooling water inlet pipes 18 and cooling water outlet pipes 21 are respectively arranged on both sides of the outer wall of the condensation tank 16. The cooling water inlet pipe 18 is connected to one end of the spiral pipe 42. The other end of the spiral pipe 42 is connected to the cooling water outlet pipe 21. A condensation outlet pipe 17 is arranged at the bottom of the outer wall of the condensation tank 16. The other end of the condensation outlet pipe 17 is connected to a throttle valve. The other end of the throttle valve is connected to the refrigerant inlet pipe 4; The cooling water inlet pipe 18 is installed on the side of the outer wall of the condensation tank 16. The other end of the cooling water inlet pipe 18 is arranged on the side of the outer wall of the circulating water pump 19. A water pump inlet pipe 20 is also arranged on the side of the outer wall of the circulating water pump 19. A flange is installed at the far end of the water pump inlet pipe 20. The flange connects and fixes the water delivery pipe and the water pump inlet pipe 20. The other end of the water delivery pipe is connected to the cooling tank outlet pipe 28; Furthermore, the high-temperature and high-pressure gaseous R32 flows through the pressurized outlet pipe 12 and enters the condensation tank 16 through the condensation inlet pipe 15. At this time, the water pump inlet pipe 20 on the side of the outer wall of the circulating water pump 19 takes in water from the cooling tank 24. The cooling water is pumped into the spiral pipe 42 inside the condensation tank 16 through the cooling water inlet pipe 18 by the pump pressure of the water pump. One end of the spiral pipe 42 is connected to the cooling water inlet pipe 18, and the other end is connected to the cooling water outlet pipe 21. At this time, when the cooling water flows through the spiral pipe 42, it absorbs the heat released by the high-temperature and high-pressure gaseous R32, causing the temperature of the gaseous refrigerant R32 to drop below the saturation temperature, and making R32 start to liquefy; When the temperature in the condensation tank 16 is below 20 degrees, the R32 at this time is heated to 30 degrees by the first-stage pressure booster 38. The temperature difference between the gaseous refrigerant R32 and the internal temperature of the condensation tank 16 is about 10 degrees, reaching the optimal condensation temperature difference. When the temperature in the condensation tank 16 is between 20 degrees and 30 degrees, the R32 at this time is heated to about 40 degrees by the first-stage pressure booster 38 and the second-stage pressure booster 40. The temperature difference between the gaseous refrigerant R32 and the internal temperature of the condensation tank 16 is about 10 degrees, reaching the optimal condensation temperature difference. When the temperature in the condensation tank 16 reaches above 30 degrees, the R32 at this time is heated to about 50 degrees by the first-stage pressure booster 38, the second-stage pressure booster 40, and the third-stage pressure booster 41. The temperature difference is about 10 degrees, reaching the optimal condensation temperature difference; The cooling water advances in a spiral in the spiral tube 42, increasing the contact time and contact area between the cooling water and the gaseous refrigerant R32, accelerating the liquefaction process of the gaseous refrigerant R32, speeding up the overall heat dissipation rate. At the same time, the liquefied R32 becomes a liquid and flows through the condensation outlet pipe 17 to the throttle valve. The throttle valve transports the liquefied R32 at low temperature and low pressure through the refrigerant inlet pipe 4 into the evaporation tank 1 for cyclic heat absorption; at this time, the cooling water that has absorbed heat is pumped from the spiral tube 42 into the cooling water outlet pipe 21.

[0026] Please refer to Figure 1 、 Figure 2 and Figure 7 As shown in and FIG. An embodiment provided by the present invention: a variable-frequency centrifugal water-cooled machine with high efficiency heat dissipation. A cooling water outlet pipe 21 is installed on the outer wall side of the condensation tank 16. The other end of the cooling water outlet pipe 21 is installed with a fifth flange 22. The fifth flange 22 is tightly connected to a sixth flange 46 through bolts. The sixth flange 46 is installed at one end of the cooling box inlet pipe 23. The other end of the cooling box inlet pipe 23 is arranged on the outer wall side of the cooling box 24; The water mist fully contacts the air inside the cooling box 24, increasing the heat exchange area between the cooling water and the air. Compared with the traditional single-direction water spraying, the nozzle 45 structures in four directions enable the water mist to diffuse in all directions, quickly exchange heat with the surrounding air, and thus efficiently dissipate the heat carried by the cooling water into the air.

[0027] Please refer to Figure 1 and Figure 2 An embodiment provided by the present invention: a variable-frequency centrifugal water-cooled machine with high-efficiency heat dissipation. A filler is arranged inside the cooling box 24. The filler is a honeycomb structure made of plastic, resistant to chemical corrosion, with a smooth surface and not prone to scaling. It can increase the contact area between water and air, improve the heat exchange efficiency, disperse the water flow into fine water droplets or thin films, and accelerate evaporation heat dissipation. A collection port is arranged at the bottom of the filler, and the collection port is connected to the outlet pipe 28 of the cooling box. The other end of the outlet pipe 28 of the cooling box is equipped with a flange. Through the flange, the outlet pipe 28 of the cooling box is tightly connected to the water delivery pipe. The other end of the water delivery pipe is connected to the water inlet pipe 20 of the water pump through a flange; A box cover 25 is installed at the top of the outer wall of the cooling box 24. A heat dissipation port 26 is arranged at the top of the outer wall of the box cover 25. A heat dissipation fan 27 is arranged inside the heat dissipation port 26. There are four fan blades inside the heat dissipation fan 27. The roots of the fan blades are rigidly connected to the motor shaft through a flange. The four fan blades are made of high-strength aluminum alloy. Each single blade is in a curved airfoil shape. The leading edge of the blade adopts a streamlined arc surface to reduce the intake resistance, and the trailing edge is designed to be gradually thinner to reduce the generation of eddy currents. The four-blade layout forms a symmetrical air flow channel during rotation, which can not only balance the axial thrust, reduce wear, but also reduce the air return loss; Furthermore, the water mist sprayed into the cooling box 24 falls into the filler. The honeycomb design of the filler greatly increases the contact area between water and air. When the water flows through the filler, it will be dispersed into fine water droplets, making the heat exchange between water and air more sufficient and accelerating the evaporation heat dissipation process. As the heat exchange proceeds, the heat in the cooling water is continuously released into the air, and the water temperature gradually decreases. The cooled water, under the action of gravity, is collected into the outlet pipe 28 of the cooling box through the collection port at the bottom of the filler; The collection port at the bottom of the filler is arranged at the lowest part of the filler to collect the cooling water after heat exchange. The collection port is connected to the outlet pipe 28 of the cooling box, forming a smooth drainage channel. The other end of the outlet pipe 28 of the cooling box is equipped with a flange. Through the flange, the outlet pipe 28 of the cooling box is tightly connected to the water delivery pipe. The flange connection not only ensures the smooth flow of the cooling water but also guarantees the sealing of the system, preventing water leakage. Then, through the water delivery pipe and the water inlet pipe 20 of the water pump, the cooling water is re-transported into the circulating water pump 19 to start a new cycle; At the top of the outer wall of the cooling box 24, a box cover 25 is installed. It not only plays a role in protecting the internal components of the cooling box 24, but also provides a basis for the setting of the heat dissipation port 26. The heat dissipation port 26 at the top of the outer wall of the box cover 25 is an important channel for air exchange between the cooling box 24 and the outside world. Inside the heat dissipation port 26, a heat dissipation fan 27 is provided. There are four fan blades inside the heat dissipation fan 27. The roots of these fan blades are rigidly connected to the motor shaft through a flange, ensuring the stability of the fan blades during high-speed rotation; The four fan blades are made of high-strength aluminum alloy. This material has the characteristics of light weight and high strength, and can meet the mechanical performance requirements of the fan blades during high-speed rotation. Each single fan blade is in a curved airfoil shape, which can generate greater lift during rotation, thereby improving the efficiency of the fan. The leading edge of the blade is designed with a streamlined arc surface, which can effectively reduce the intake resistance and reduce energy loss. The trailing edge is designed to be thinner, which can reduce the generation of eddies and make the air flow more smoothly; The four-blade layout forms a symmetrical air flow channel during rotation. This design can not only balance the axial thrust, reduce wear, but also reduce the air return loss and improve the overall heat dissipation performance of the fan.

[0028] Working principle: First, the refrigerant R32 absorbs heat and vaporizes in the evaporation tank 1, and the gaseous refrigerant R32 is inhaled by the suction gas 8 and sent into the multi-stage pressure booster; Then, the controller 11 compares the data detected by the temperature sensor 43 in real time with the preset threshold value, and selects the most suitable operation mode of the multi-stage pressure booster, so that the temperature of the gaseous refrigerant R32 and the temperature in the condensation tank 16 reach the best condensation and liquefaction temperature difference, which speeds up the heat dissipation efficiency. At the same time, the heat absorption of the cooling water and the design of increasing the contact area of the spiral tube 42 improve the heat exchange efficiency; Finally, the cooling water that has absorbed heat exchanges heat with the air efficiently through the sprayer 44, the heat dissipation fan 27 and the packing arranged in the cooling box 24. At the same time, the cooling water after heat exchange is pumped into the condensation tank 16 again through the circulating water pump 19 to exchange heat with the gaseous refrigerant R32, forming a complete cooling water circulation system.

[0029] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A variable-frequency centrifugal water-cooled machine with efficient heat dissipation, comprising a housing (9), a temperature control module and a multi-stage pressure booster, characterized in that: A temperature control module is installed at the top of the outer wall of the housing (9); The temperature control module includes: a temperature sensor (43), a mechanical rod (10), and a controller (11); A multi-stage pressure booster is provided on the inner wall of the housing (9); The multi-stage pressure booster includes: a primary pressure booster (38), a secondary pressure booster (40), and a tertiary pressure booster (41); The temperature sensor (43) is connected to the controller (11) through a data cable embedded in the pipe wall. A mechanical rod (10) is installed at the bottom end of the outer wall of the controller (11), and the bottom end of the outer wall of the mechanical rod (10) is installed on the housing (9). The connection wires of the multi-stage pressure booster pass through the housing (9) and the mechanical rod (10) and are connected to the controller (11); The primary pressure booster (38) is connected to the secondary pressure booster (40) through a connecting rod (39), and the secondary pressure booster (40) is connected to the tertiary pressure booster (41) through a connecting rod (39).

2. An efficient heat dissipation variable frequency centrifugal water chiller according to claim 1, characterized in that: A connecting shaft (33) runs through the interior of the multi-stage pressure booster; The connecting shaft (33) includes: a bearing (32), a primary telescopic slider (47), a secondary telescopic slider (48), and a tertiary telescopic slider (49); The side surface of the outer wall of the connecting shaft (33) fits with the inner wall of the bearing (32). A total of six telescopic sliders are provided on the side surface of the outer wall of the connecting shaft (33), above the bearing (32). Two telescopic sliders are arranged left and right on the outer wall of the connecting shaft (33) for each stage. There are a total of six card slots on both sides of the inner wall of each stage of the multi-stage pressure booster. The two card slots of each stage mesh with the telescopic sliders of each stage.

3. An efficient heat dissipation variable frequency centrifugal water chiller according to claim 1, characterized in that: The primary pressure booster (38) includes: a sealing ring (34), a chassis (35), an impeller (36), a blade cover (37), and a connecting rod (39); The inner wall of the sealing ring (34) is embedded with the connecting shaft (33). The top of the outer wall of the sealing ring (34) is installed with a chassis (35). The top of the outer wall of the chassis (35) is installed with an impeller core. There are two card slots provided on the inner wall of the impeller core. The connecting shaft (33) is embedded in the inner wall of the impeller core. The primary telescopic slider (47) on the connecting shaft (33) meshes with the two card slots in the inner wall of the impeller core. Eight impellers (36) are provided on the side surface of the outer wall of the impeller core. The top of the outer wall of the impeller core is installed with a blade cover (37). The top of the outer wall of the blade cover (37) is installed with four connecting rods (39). The four connecting rods (39) are arranged in a square. The top of the outer wall of the connecting rod (39) is installed with the chassis (35) of the secondary pressure booster (40). The top of the outer wall of the connecting rod (39) of the secondary pressure booster (40) is installed with the chassis (35) of the tertiary pressure booster (41). The combination of the secondary pressure booster (40) and the tertiary pressure booster (41) is the same as that of the primary pressure booster (38).

4. An efficient heat dissipation variable frequency centrifugal water chiller according to claim 1, characterized in that: On the side of the outer wall of the said housing (9), a pressurized outlet pipe (12) is connected. At the other end of the pressurized outlet pipe (12), a third flange (13) is installed. The third flange (13) and the fourth flange (14) are connected by eight bolts. The fourth flange (14) is installed at one end of the condensation inlet pipe (15). The other end of the condensation inlet pipe (15) is arranged at the top of the outer wall of the condensation tank (16). A temperature sensor (43) is installed on the side of the inner wall of the condensation tank (16). A spiral pipe (42) is arranged inside the condensation tank (16). On both sides of the outer wall of the condensation tank (16), a cooling water inlet pipe (18) and a cooling water outlet pipe (21) are respectively arranged. The cooling water inlet pipe (18) is connected to one end of the spiral pipe (42). The other end of the spiral pipe (42) is connected to the cooling water outlet pipe (21). At the bottom end of the outer wall of the condensation tank (16), a condensation outlet pipe (17) is arranged. The other end of the condensation outlet pipe (17) is connected to a throttle valve. The other end of the throttle valve is connected to the refrigerant inlet pipe (4).

5. An efficient heat dissipation variable frequency centrifugal water chiller according to claim 1, characterized in that: On the side of the outer wall of the said housing (9), a gas suction port (8) is provided; The gas suction port (8) includes: a suction housing (29), a fan (30) and fan blades (31); The inner wall of the said gas suction port (8) is mutually fitted with the outer wall of the suction housing (29). Inside the suction housing (29), a fan (30) is arranged. On the side of the outer wall of the fan (30), four fan blades (31) are installed. On the side of the outer wall of the gas suction port (8), a second flange (7) is installed. The second flange (7) and the first flange (6) are fixedly connected by bolts. The first flange (6) is installed at one end of the refrigerant outlet pipe (5). The other end of the refrigerant outlet pipe (5) is arranged at the top of the outer wall of the evaporation tank (1). At the bottom end of the outer wall of the evaporation tank (1), a refrigerant inlet pipe (4) is arranged. On the side of the outer wall of the evaporation tank (1), a water inlet pipe (2) and a water outlet pipe (3) are arranged. The water inlet pipe (2) and the water outlet pipe (3) are arranged side by side.

6. The variable-frequency centrifugal water chiller with efficient heat dissipation according to claim 4, characterized in that: On the side of the outer wall of the said condensation tank (16), a cooling water inlet pipe (18) is installed. The other end of the cooling water inlet pipe (18) is arranged on the side of the outer wall of the circulating water pump (19). On the side of the outer wall of the circulating water pump (19), a water pump inlet pipe (20) is also arranged. At the distal end of the water pump inlet pipe (20), a flange is installed. The flange fixedly connects the water delivery pipe and the water pump inlet pipe (20). The other end of the water delivery pipe is connected to the cooling tank outlet pipe (28).

7. An efficient heat dissipation variable frequency centrifugal water chiller according to claim 4, characterized in that: On the side of the outer wall of the said condensation tank (16), a cooling water outlet pipe (21) is installed. At the other end of the cooling water outlet pipe (21), a fifth flange (22) is installed. The fifth flange (22) is tightly connected to the sixth flange (46) by bolts. The sixth flange (46) is installed at one end of the cooling tank inlet pipe (23). The other end of the cooling tank inlet pipe (23) is arranged on the side of the outer wall of the cooling tank (24).

8. An efficient heat dissipation variable frequency centrifugal water chiller according to claim 7, characterized in that: The other end of the inlet pipe (23) of the cooling box is arranged on the side of the outer wall of the cooling box (24). The water delivery pipe is connected to the inlet pipe (23) of the cooling box. The other end of the water delivery pipe is closed. Ten sprayers (44) are arranged on the side of the outer wall of the water delivery pipe. The ten sprayers (44) are divided into two groups, with five in each group, and are respectively arranged on both sides of the outer wall of the water delivery pipe. One spray orifice (45) is arranged in each of the four directions on the side of the outer wall of the spray head in the sprayer (44).

9. An efficient heat dissipation variable frequency centrifugal water chiller according to claim 7, characterized in that: Packing is arranged inside the cooling box (24). The packing is a honeycomb structure made of plastic, which is chemically corrosion-resistant, has a smooth surface and is not easy to scale. It can increase the contact area between water and air, improve the heat exchange efficiency, disperse the water flow into fine water droplets or thin films, and accelerate evaporation and heat dissipation. A collection port is arranged at the bottom of the packing, and the collection port is connected to the outlet pipe (28) of the cooling box. A flange is installed at the other end of the outlet pipe (28) of the cooling box. Through the flange, the outlet pipe (28) of the cooling box is tightly connected to the water delivery pipe. The other end of the water delivery pipe is connected to the water inlet pipe (20) of the water pump through a flange.

10. The variable-frequency centrifugal water chiller with efficient heat dissipation according to claim 7, characterized in that: A box cover (25) is installed at the top of the outer wall of the cooling box (24). A heat dissipation port (26) is arranged at the top of the outer wall of the box cover (25). A heat dissipation fan (27) is arranged inside the heat dissipation port (26). There are four fan blades inside the heat dissipation fan (27). The roots of the fan blades are rigidly connected to the motor shaft through a flange. The four fan blades are made of high-strength aluminum alloy. Each single blade is in a curved airfoil shape. The leading edge of the blade adopts a streamline arc surface to reduce the intake resistance, and the trailing edge is designed to be gradually thinner to reduce the generation of eddy currents. The four-blade layout forms a symmetrical air flow channel when rotating, which can not only balance the axial thrust, reduce wear, but also reduce the loss of air backflow.

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