A vertical direct-drive motor non-powered temperature-difference composite cooling device

Abstract

The present invention relates to a cooling device, and particularly to a vertical direct-drive motor passive temperature-difference composite cooling device. A vertical direct-drive motor passive temperature-difference composite cooling device includes a housing assembly, an internal assembly is arranged inside the housing assembly, and a gas-guide cooling assembly is arranged outside the housing assembly corresponding to the internal assembly. The purpose of the present invention is to provide a vertical direct-drive motor passive temperature-difference composite cooling device with a simple structure, energy saving and better effect.

Description

Technical Field

[0001] The present invention relates to a cooling device, and particularly to a vertical direct-drive motor passive temperature difference composite cooling device. Background Art

[0002] With the development of industry and technology, motors are required to output higher power in a more compact space, which leads to serious heat generation problems. The temperature rise of the closed inner cavity of a conventional water-cooled vertical permanent magnet direct-drive motor with an IP55 protection level has always been a key concern in motor design. When a large-volume water-air cooling or air-air cooling device is not adopted, the internal temperature rise of the water-cooled motor is still relatively high, seriously reducing indicators such as the magnetic energy product and efficiency of the motor, and significantly increasing the design cost. Summary of the Invention

[0003] In view of this, the present invention provides a vertical direct-drive motor passive temperature difference composite cooling device, aiming to provide a vertical direct-drive motor passive temperature difference composite cooling device with a simple structure, energy saving, and better effect.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A vertical direct-drive motor passive temperature difference composite cooling device includes a housing assembly. An internal assembly is arranged inside the housing assembly, and a gas guiding cooling assembly is correspondingly arranged outside the housing assembly and corresponding to the internal assembly; the housing assembly includes a motor housing, an upper end cover is arranged at the top of the motor housing, and a lower end cover is arranged at the bottom of the motor housing; the internal assembly includes a motor stepped shaft, the upper end of the motor stepped shaft is rotationally connected to the upper end cover through a first bearing, the lower end of the motor stepped shaft is rotationally connected to the lower end cover through a second bearing, a rotor is sleeved around the middle of the motor stepped shaft, a rotor magnetic isolation punching sheet is arranged through a plurality of rotor hubs around the rotor, a stator is spacedly coated around the rotor magnetic isolation punching sheet, and the outer wall of the stator is correspondingly arranged on the inner wall of the motor housing; the gas guiding cooling assembly includes an internal gas guiding channel inside the motor housing, two upper gas guiding metal pipes that penetrate through the upper end cover symmetrically left and right and are communicated with the internal gas guiding channel are arranged, the bottom end of the upper gas guiding metal pipe is communicated with the top of a heat exchange device, the bottom of the heat exchange device is communicated with the top end of a lower gas guiding metal pipe, the end of the lower gas guiding metal pipe is communicated and arranged at the bottom of the motor housing and above the lower end cover, the heat exchange device includes a heat exchange device housing, the horizontal cross-sectional areas of the upper gas guiding metal pipe and the lower gas guiding metal pipe are both smaller than the horizontal cross-sectional area of the heat exchange device housing, a cooling water sleeve is sleeved around the motor housing corresponding to the heat exchange device, wherein the internal gas guiding channel, the upper gas guiding metal pipe, the heat exchange device, and the lower gas guiding metal pipe are mutually communicated to form a closed circulating gas guiding channel.

[0006] Preferably, a plurality of heat-conducting metal sheets are longitudinally arranged in the outer shell of the heat exchange device, and air channels are correspondingly formed between two adjacent heat-conducting metal sheets.

[0007] Preferably, the cooling water pipe sleeve is a closed annular structure, and a plurality of cooling water pipes arranged in a serpentine shape are sequentially arranged in a circumferential direction in the cooling water pipe sleeve. A water jacket cooling water inlet and a water jacket cooling water outlet are correspondingly communicated with two adjacent cooling water pipes respectively.

[0008] Preferably, the bottom end of the motor stepped shaft extends downward below the lower end cover, and a keyway is correspondingly arranged on the extended part of the motor stepped shaft.

[0009] Preferably, a sealing ring is arranged at the connection between the lower end cover and the motor stepped shaft.

[0010] Preferably, a junction box is arranged at the rear side of the motor housing.

[0011] The beneficial effects of the present invention are as follows:

[0012] 1. The present invention includes a housing assembly. An internal component is disposed within the housing assembly, and a gas guiding and cooling component is correspondingly disposed outside the housing assembly for the internal component. The housing assembly can provide a placement space for the internal component and also prevent dust, moisture, corrosive substances, and other external impurities from entering the interior of the motor. The setting of the internal component enables the vertical direct drive motor to normally perform its functions. The setting of the gas guiding and cooling component can, through the diversion of the hot air flow inside the vertical direct drive motor, enable the hot air flow to achieve self-circulation based on its own buoyancy and gravity without increasing the power consumption of the circulation drive, and combined with the heat exchange cooling effects of the heat exchange device and the cooling water pipe sleeve, form a circulating cooling. Compared with the traditional cooling device for vertical direct drive motors, this device does not require an increase in the power consumption of the air flow circulation, is more energy-efficient, realizes self-circulation through the buoyancy and gravity of the hot air flow itself, and forms a circulating cooling in combination with the heat exchange cooling effects of the heat exchange device and the cooling water pipe sleeve. It is easier to implement and has a better cooling effect. The housing assembly includes a motor housing. An upper end cover is provided at the top of the motor housing, and a lower end cover is provided at the bottom of the motor housing. The separate setting of the motor housing, the upper end cover, and the lower end cover facilitates the daily inspection, cleaning, and maintenance of the vertical direct drive motor. At the same time, the connection between the upper end cover and one end of the upper gas guiding metal pipe in this technical solution is conducive to accelerating the self-circulation of the hot air flow inside the motor, thereby improving the heat dissipation efficiency inside the motor. The internal component includes a motor stepped shaft. The upper end of the motor stepped shaft is rotationally connected to the upper end cover through a first bearing, and the lower end of the motor stepped shaft is rotationally connected to the lower end cover through a second bearing. A rotor is sleeved around the middle of the motor stepped shaft. Rotor magnetic isolation punching sheets are provided around the rotor through a plurality of rotor hubs. The stator is spacedly wrapped around the outside of the rotor magnetic isolation punching sheets. The outer wall of the stator is correspondingly disposed on the inner wall of the motor housing. This setting enables the vertical direct drive motor to normally perform its functions. The gas guiding and cooling component includes an internal gas guiding channel located inside the motor housing. Two upper gas guiding metal pipes that are symmetrically arranged left and right and communicate with the internal gas guiding channel are penetrated through the upper end cover. The bottom end of the upper gas guiding metal pipe is connected to the top of the heat exchange device. The bottom of the heat exchange device is connected to the top end of the lower gas guiding metal pipe. Two lower gas guiding metal pipes are correspondingly provided for the upper gas guiding metal pipes. The ends of the lower gas guiding metal pipes are connected and disposed at the bottom of the motor housing and above the lower end cover. A cooling water pipe sleeve is sleeved around the outside of the motor housing corresponding to the heat exchange device. Among them, the internal gas guiding channel, the upper gas guiding metal pipe, the heat exchange device, and the lower gas guiding metal pipe are interconnected to form a closed circulating gas guiding channel. This setting can, through the circulating flow of the hot air flow in the closed circulating gas guiding channel formed by the interconnection of the internal gas guiding channel, the upper gas guiding metal pipe, the heat exchange device, and the lower gas guiding metal pipe, and in the process of the circulating flow, combined with the heat exchange cooling effects of the heat exchange device and the cooling water pipe sleeve, form a circulating cooling. The principle of self-circulation of the hot air flow is applied throughout the process of the circulating cooling, without increasing the power consumption of the air flow circulation, being more energy-saving and environmentally friendly, and through the combined use of the heat exchange device and the cooling water pipe sleeve, the cooling effect can be improved.

[0013] 2. The heat exchange device of the present invention includes a heat exchange device housing. A plurality of heat-conducting metal sheets are longitudinally arranged inside the heat exchange device housing. Air channels are correspondingly formed between two adjacent heat-conducting metal sheets. This arrangement, through the heat-conducting metal sheets and the air channels formed between two adjacent heat-conducting metal sheets, can accelerate the circulating flow of the hot air flow in the closed circulating air guide channel jointly formed by the inner air guide channel, the upper air guide metal pipe, the heat exchange device (multiple air channels), and the lower air guide metal pipe, thereby accelerating the absorption of the heat in the hot air flow by the heat-conducting metal sheets, facilitating the acceleration of the cold and hot cycle of the hot air flow, and further efficiently and rapidly reducing the temperature of the inner cavity of the vertical direct-drive motor.

[0014] 3. The cooling water pipe sleeve of the present invention is a closed cylindrical structure. A plurality of cooling water pipes arranged in a serpentine pattern are sequentially arranged in a circular manner inside the cooling water pipe sleeve. A water jacket cooling water inlet and a water jacket cooling water outlet are correspondingly and communicatively arranged on two adjacent cooling water pipes respectively. The cooling water pipe sleeve is designed as a cylindrical structure and is arranged in close fit with the outer wall of the motor housing, which can uniformly and effectively take away the heat transferred from the inner cavity of the vertical direct-drive motor to the motor housing, reduce the local overheating phenomenon of the vertical direct-drive motor, and improve the cooling efficiency; the design in which a plurality of cooling water pipes are arranged in a serpentine pattern and sequentially form a circle. Firstly, compared with a straight pipe type cooling water pipe, this design has a larger surface area, thus enhancing the heat exchange efficiency between the water flow and the pipe wall of the cooling water pipe. Secondly, the continuously curved internal flow path in this design can promote the formation of turbulent flow in the water flow. This turbulent flow state can more effectively stir the water flow to break the thermal boundary layer formed by laminar flow, further improving the heat transfer efficiency. Finally, this design can make the time for the water flow to pass through each area (referring to the inside of the cooling water pipe sleeve) closer, which is beneficial to making the cooling water pipe sleeve more uniformly absorb the heat transferred from the inner cavity of the vertical direct-drive motor to the motor housing, and further making its cooling of the vertical direct-drive motor more uniform, reducing the risk of local overheating of the vertical direct-drive motor.

[0015] 4. The bottom end of the motor stepped shaft of the present invention extends downward below the lower end cover, and a keyway is correspondingly arranged on the extended part of the motor stepped shaft. This arrangement facilitates the installation and disassembly of the external transmission components and also provides convenience for daily maintenance and repair.

[0016] 5. The horizontal cross-sectional areas of both the upper air guide metal tube and the lower air guide metal tube of the present invention are smaller than the horizontal cross-sectional area of the heat exchange device housing. This setting increases the flow velocity of the gas in the inner cavity of the vertical direct drive motor in the upper and lower air guide metal tubes and decreases the flow velocity of the gas in the heat exchange device (relative to the gas flow velocity in the upper and lower air guide metal tubes). Therefore, during the self-circulation process of the hot air flow in the vertical direct drive motor, the hot air flow in the vertical direct drive motor floats upward due to the temperature increase during the operation of the motor and can quickly flow into multiple air channels in the heat exchange device after being guided by the upper air guide metal tube. Since the cross-sectional area of the heat exchange device increases (compared with the cross-sectional areas of the upper and lower air guide metal tubes), the flow velocity of the air flow decreases, so that the heat in the air flow can be fully absorbed by multiple heat conduction metal sheets and conducted to the cooling water pipe sleeve. The cooled low-temperature air flow gradually enters the inner cavity of the vertical direct drive motor through the guiding action of the lower air guide metal tube due to its own gravity. Since the cross-sectional area of the lower air guide metal tube decreases (compared with the cross-sectional area of the heat exchange device housing), the flow velocity of the air flow increases, so that the low-temperature air flow can be introduced into the inner cavity of the vertical direct drive motor faster. The entire air flow circulation process switches the channel area, which not only ensures the heat exchange efficiency but also accelerates the air flow circulation efficiency, is conducive to continuously and quickly dissipating heat from the inner cavity of the vertical direct drive motor to maintain the stability of the temperature in the inner cavity of the vertical direct drive motor, and is conducive to improving the efficiency of the vertical direct drive motor.

[0017] 6. A sealing ring is provided at the connection between the lower end cover and the motor stepped shaft of the present invention. This setting can effectively prevent external dust, moisture, and other pollutants from entering the inside of the vertical direct drive motor, can protect the vertical direct drive motor from damage by environmental factors, is conducive to improving the reliability of the vertical direct drive motor, and extends the service life of the vertical direct drive motor to a certain extent.

[0018] 7. A junction box is provided at the rear side of the motor housing of the present invention. The junction box can provide a safe and reliable interface for the power supply or an external control system to ensure the stable operation of the vertical direct drive motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front sectional view structural schematic diagram of the present invention;

[0020] Figure 2 is a top view structural schematic diagram of the present invention;

[0021] Figure 3 is a top sectional view structural schematic diagram of the air guide and cooling assembly of the present invention;

[0022] Figure 4 is a partial top sectional view structural schematic diagram of the air guide and cooling assembly of the present invention.

[0023] Reference numerals: 1: housing assembly; 2: built-in component; 3: air guiding and cooling component; 4: motor housing; 5: upper end cover; 6: lower end cover; 7: motor stepped shaft; 8: first bearing; 9: second bearing; 10: rotor; 11: rotor hub; 12: rotor magnetic isolation punching sheet; 13: stator; 14: inner air guiding channel; 15: upper air guiding metal pipe; 16: heat exchange device; 17: lower air guiding metal pipe; 18: cooling water pipe sleeve; 19: heat exchange device housing; 20: heat conducting metal sheet; 21: air channel; 22: cooling water pipe; 23: water jacket cooling water inlet; 24: water jacket cooling water outlet; 25: keyway; 26: sealing ring; 27: junction box. Detailed implementation manners

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present invention belong to the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying 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", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "set" should be understood in a broad sense. For example, it 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 communication inside 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 situations.

[0027] As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, it includes a housing assembly 1. An internal component 2 is arranged inside the housing assembly 1. A gas guiding and cooling component 3 is correspondingly arranged outside the housing assembly 1 for the internal component 2. The housing assembly 1 can provide a placement space for the internal component 2 and also prevent dust, moisture, corrosive substances, and other external impurities from invading the interior of the motor. The setting of the internal component 2 enables the vertical direct drive motor to normally realize its functions. The setting of the gas guiding and cooling component 3 can, through the diversion of the hot air flow inside the vertical direct drive motor, enable the hot air flow to achieve self-circulation through the buoyancy and gravity of the hot air flow itself without increasing the power consumption of the circulation power. Combined with the heat exchange and cooling effects of the heat exchange device 16 and the cooling water pipe sleeve 18, a circulating cooling is formed. Compared with the traditional cooling device for the vertical direct drive motor, this device does not need to increase the power consumption of the air flow circulation, is more energy-saving, realizes self-circulation through the buoyancy and gravity of the hot air flow itself, and combines the heat exchange and cooling effects of the heat exchange device 16 and the cooling water pipe sleeve 18 to form a circulating cooling, which is easier to achieve and has a better cooling effect; The housing assembly 1 includes a motor housing 4. An upper end cover 5 is arranged at the top of the motor housing 4, and a lower end cover 6 is arranged at the bottom of the motor housing 4. The setting of separating the motor housing 4, the upper end cover 5, and the lower end cover 6 is convenient for the daily inspection, cleaning, and maintenance of the vertical direct drive motor. At the same time, the connection between the upper end cover 5 and one end of the upper gas guiding metal pipe 15 in this technical solution is beneficial to accelerating the self-circulation of the hot air flow inside the motor, thereby improving the heat dissipation efficiency inside the motor; The internal component 2 includes a motor stepped shaft 7. The upper end of the motor stepped shaft 7 is rotatably connected to the upper end cover 5 through a first bearing 8, and the lower end of the motor stepped shaft 7 is rotatably connected to the lower end cover 6 through a second bearing 9. A rotor 10 is sleeved around the middle of the motor stepped shaft 7. A rotor magnetic isolation punching sheet 12 is arranged through a plurality of rotor hubs 11 on the periphery of the rotor 10. A stator 13 is arranged at intervals around the periphery of the rotor magnetic isolation punching sheet 12. The outer wall of the stator 13 is correspondingly arranged on the inner wall of the motor housing 4. This setting can enable the vertical direct drive motor to normally realize its functions;The air guiding and cooling assembly 3 includes an inner air guiding channel 14 located inside the motor housing 4. There are two upper air guiding metal pipes 15 symmetrically penetrating through the upper end cover 5 and communicating with the inner air guiding channel 14. The bottom end of the upper air guiding metal pipe 15 is communicated with the top of the heat exchange device 16. The bottom of the heat exchange device 16 is communicated with the top end of the lower air guiding metal pipe 17. There are two lower air guiding metal pipes 17 corresponding to the upper air guiding metal pipes 15. The ends of the lower air guiding metal pipes 17 are communicated and arranged at the bottom of the motor housing 4 and above the lower end cover 6. A cooling water pipe sleeve 18 is sleeved around the outer periphery of the motor housing 4 corresponding to the heat exchange device 16. Among them, the inner air guiding channel 14, the upper air guiding metal pipe 15, the heat exchange device 16, and the lower air guiding metal pipe 17 are interconnected to form a closed-loop air guiding channel. This setting can form a circulating cooling through the circulating flow of hot air in the closed-loop air guiding channel formed by the interconnection of the inner air guiding channel 14, the upper air guiding metal pipe 15, the heat exchange device 16, and the lower air guiding metal pipe 17, and the heat exchange and cooling effects of the heat exchange device 16 and the cooling water pipe sleeve 18 during the circulating flow process. The principle of self-circulation of hot air is used in the entire circulating cooling process, without increasing the power consumption of air flow circulation, which is more energy-saving and environmentally friendly. Moreover, by combining the use of the heat exchange device 16 and the cooling water pipe sleeve 18, the cooling effect can be improved.

[0028] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, the heat exchange device 16 includes a heat exchange device housing 19. The heat exchange device housing 19 is hermetically welded to the outer wall of the cooling water pipe sleeve 18. A plurality of heat conducting metal sheets 20 are longitudinally arranged inside the heat exchange device housing 19. The plurality of heat conducting metal sheets 20 are integrally welded to the outer wall of the cooling water pipe sleeve 18. Air channels 21 are correspondingly formed between adjacent two heat conducting metal sheets 20. This setting can accelerate the circulating flow of hot air in the closed-loop air guiding channel jointly formed by the inner air guiding channel 14, the upper air guiding metal pipe 15, the heat exchange device 16 (a plurality of air channels 21), and the lower air guiding metal pipe 17 through the heat conducting metal sheets 20 and the air channels 21 formed between adjacent two heat conducting metal sheets 20, thereby accelerating the absorption of heat in the hot air by the heat conducting metal sheets 20, which is beneficial to accelerating the hot and cold cycle of the hot air, and further can efficiently and rapidly reduce the temperature of the inner cavity of the vertical direct drive motor.

[0029] As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, the cooling water pipe sleeve 18 is a closed annular cylindrical structure. Inside the cooling water pipe sleeve 18, a plurality of cooling water pipes 22 arranged in a serpentine pattern are sequentially arranged in a circle. A water jacket cooling water inlet 23 and a water jacket cooling water outlet 24 are respectively and correspondingly communicated on two adjacent cooling water pipes 22. The cooling water pipe sleeve 18 is designed as an annular cylindrical structure and is arranged to fit the outer wall of the motor housing 4, which can evenly and effectively remove the heat transferred from the inner cavity of the vertical direct drive motor to the motor housing 4, reduce the local overheating phenomenon of the vertical direct drive motor, and improve the cooling efficiency. The design of arranging a plurality of cooling water pipes 22 in a serpentine pattern and sequentially forming a circle. First, compared with the straight pipe type cooling water pipe, this design has a larger surface area, so the heat exchange efficiency between the water flow and the wall of the cooling water pipe 22 can be enhanced. Second, in this design, the continuously curved internal flow channel can promote the water flow to form a turbulent flow. This turbulent flow state can more effectively stir the water flow to break the thermal boundary layer formed by the laminar flow, and can further improve the heat transfer efficiency. Finally, this design can make the time for the water flow to flow through each area (referring to the inside of the cooling water pipe sleeve 18) closer, which is beneficial to making the cooling water pipe sleeve 18 more evenly absorb the heat transferred from the inner cavity of the vertical direct drive motor to the motor housing 4, and further making its cooling of the vertical direct drive motor more uniform and reducing the risk of local overheating of the vertical direct drive motor.

[0030] As Figure 1 shown, the bottom end of the motor stepped shaft 7 extends downward below the lower end cover 6, and a keyway 25 is correspondingly arranged on the extended part of the motor stepped shaft 7. This setting facilitates the installation and disassembly of the external transmission components, and also provides convenience for daily maintenance and repair.

[0031] As Figure 1 and Figure 2As shown, the horizontal cross-sectional areas of the upper air guiding metal pipe 15 and the lower air guiding metal pipe 17 are both smaller than the horizontal cross-sectional area of the heat exchange device housing 19. This setting increases the flow rate of the gas in the upper air guiding metal pipe 15 and the lower air guiding metal pipe 17 in the inner cavity of the vertical direct drive motor and reduces the flow rate of the gas in the heat exchange device 16 (relative to the gas flow rate in the upper air guiding metal pipe 15 and the lower air guiding metal pipe 17). Therefore, during the self-circulation process of the hot air flow in the vertical direct drive motor, the hot air flow in the vertical direct drive motor floats upward due to the temperature rise during the operation of the motor and can quickly flow into the multiple air channels 21 in the heat exchange device 16 after being guided by the upper air guiding metal pipe 15. Since the cross-sectional area of the heat exchange device 16 increases (compared with the cross-sectional areas of the upper air guiding metal pipe 15 and the lower air guiding metal pipe 17), the gas flow rate decreases, so that the heat in the gas flow can be fully absorbed by the multiple heat conducting metal sheets 20 and conducted to the cooling water pipe sleeve 18. The cooled low-temperature gas gradually enters the inner cavity of the vertical direct drive motor through the guiding action of the lower air guiding metal pipe 17 due to its own gravity. Since the cross-sectional area of the lower air guiding metal pipe 17 decreases (compared with the cross-sectional area of the heat exchange device housing 19), the gas flow rate increases, so that the low-temperature gas can be introduced into the inner cavity of the vertical direct drive motor faster. Through the switching of the channel area in the whole gas flow circulation process, while ensuring the heat exchange efficiency, the gas flow circulation efficiency is also accelerated, which is beneficial to continuously and quickly dissipating heat from the inner cavity of the vertical direct drive motor to maintain the stability of the temperature in the inner cavity of the vertical direct drive motor and is beneficial to improving the efficiency of the vertical direct drive motor.

[0032] As Figure 1 shown, a sealing ring 26 is provided at the connection between the lower end cover 6 and the motor stepped shaft 7. This setting can effectively prevent external dust, moisture and other pollutants from entering the vertical direct drive motor, protect the vertical direct drive motor from environmental damage, improve the reliability of the vertical direct drive motor, and extend the service life of the vertical direct drive motor to a certain extent.

[0033] As Figure 2 and Figure 3 shown, a junction box 27 is provided at the rear side of the motor housing 4. The junction box 27 can provide a safe and reliable interface for the power supply or an external control system to ensure the stable operation of the vertical direct drive motor.

[0034] The specific operation principle is as follows:

[0035] First, connect the water jacket cooling water inlet and the water jacket cooling water outlet to external water pipes, external water pumps, etc., so that the water jacket cooling water inlet, multiple cooling water pipes, the water jacket cooling water outlet, the external water pipe, and the external water pump are interconnected to form a cooling water circulation pipeline. The cooling water in the cooling water circulation pipeline is provided by the external water pump. The cooling water enters the cooling water jacket through the external water pipe and the water jacket cooling water inlet in sequence, flows through the multiple cooling water pipes in sequence for one week, and then flows out from the water jacket cooling water outlet. In this way, the cooling water circulation can be realized; when the vertical direct-drive motor operates, the heat generated inside makes the air in the vertical direct-drive motor become hot air flow. The hot air flow in the vertical direct-drive motor floats upward due to the temperature rise during the motor operation and can quickly flow into the multiple air channels in the heat exchange device after being guided by the upper air guide metal pipe. Since the cross-sectional area of the heat exchange device increases (compared with the cross-sectional areas of the upper air guide metal pipe and the lower air guide metal pipe), the air flow velocity decreases, so that the heat in the air flow can be fully absorbed by the multiple heat-conducting metal sheets and conducted to the cooling water jacket. The low-temperature air flow after absorbing heat by the circulating cooling water in the cooling water jacket gradually enters the inner cavity of the vertical direct-drive motor through the guiding action of the lower air guide metal pipe due to its own gravity. Since the cross-sectional area of the lower air guide metal pipe decreases (compared with the cross-sectional area of the heat exchange device housing), the air flow velocity increases, so that the low-temperature air flow can be introduced into the inner cavity of the vertical direct-drive motor faster. The low-temperature air flow entering the vertical direct-drive motor cools the inner cavity of the motor by absorbing the heat in the inner cavity of the motor. At the same time, the low-temperature air flow becomes hot air flow again and flows upward due to its own buoyancy. In this way, the inner cavity of the motor can be cooled by the self-circulation of the air flow and the cooling water circulation.

[0036] All the electrical components mentioned in this article can be electrically connected to the external main controller and 220V mains through a transformer. And the main controller can be a conventional known device such as a computer that plays a control role. Conventional known devices such as a computer that play a control role can receive various data signals monitored by this device in real time. The electrical components provided by the present invention are only used according to the structural characteristics of the technical solution of the product. The product will be adjusted and modified after purchase to make it more matching and in line with the technical solution of the present invention. It is an optimal application technical solution of the present technical solution. The model of the product can be replaced and modified according to the required technical parameters. It is well known to those skilled in the art. Therefore, those skilled in the art can clearly obtain the corresponding use effects through the technical solution provided by the present invention.

[0037] The control mode of the present invention is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common knowledge in the art. And the present invention is mainly used to protect mechanical devices. Therefore, the control mode and circuit connection of the present invention will not be explained in detail.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vertical direct-drive motor non-powered temperature difference composite cooling device, characterized in that, It includes a housing assembly, an internal assembly is arranged inside the housing assembly, and an air guiding and cooling assembly is arranged outside the housing assembly corresponding to the internal assembly; The housing assembly includes a motor housing, an upper end cover is arranged at the top of the motor housing, and a lower end cover is arranged at the bottom of the motor housing; The internal assembly includes a motor stepped shaft. The upper end of the motor stepped shaft is rotationally connected to the upper end cover through a first bearing, and the lower end of the motor stepped shaft is rotationally connected to the lower end cover through a second bearing. A rotor is sleeved around the middle of the motor stepped shaft. Rotor magnetic isolation punching sheets are arranged through a plurality of rotor hubs on the periphery of the rotor. A stator is arranged at intervals around the periphery of the rotor magnetic isolation punching sheets, and the outer wall of the stator is correspondingly arranged on the inner wall of the motor housing; The air guiding and cooling assembly includes an internal air guiding channel located inside the motor housing. Two upper air guiding metal pipes communicating with the internal air guiding channel are arranged through the upper end cover in a left-right symmetric manner. The bottom end of the upper air guiding metal pipe is communicated with the top of a heat exchange device. The bottom of the heat exchange device is communicated with the top end of a lower air guiding metal pipe. The end of the lower air guiding metal pipe is communicated and arranged at the bottom of the motor housing and above the lower end cover. The heat exchange device includes a heat exchange device housing. The horizontal cross-sectional areas of the upper air guiding metal pipe and the lower air guiding metal pipe are both smaller than the horizontal cross-sectional area of the heat exchange device housing. A cooling water pipe sleeve is sleeved around the motor housing corresponding to the heat exchange device. Among them, the internal air guiding channel, the upper air guiding metal pipe, the heat exchange device, and the lower air guiding metal pipe are interconnected to form a closed circulating air guiding channel.

2. The vertical direct-drive motor non-powered temperature difference composite cooling device according to claim 1, characterized in that, A plurality of heat conducting metal sheets are arranged longitudinally in the heat exchange device housing, and air channels are correspondingly formed between two adjacent heat conducting metal sheets.

3. The non-powered temperature difference composite cooling device for a vertical direct drive motor according to claim 1, characterized in that, The cooling water pipe sleeve is a closed annular structure. A plurality of cooling water pipes arranged in a serpentine arrangement are sequentially arranged in a circumferential manner inside the cooling water pipe sleeve. A water jacket cooling water inlet and a water jacket cooling water outlet are correspondingly communicated and arranged on two adjacent cooling water pipes respectively.

4. The vertical direct-drive motor non-powered temperature difference composite cooling device according to claim 1, characterized in that, The bottom end of the motor stepped shaft extends downward below the lower end cover, and a key groove is correspondingly arranged on the extended part of the motor stepped shaft.

5. A vertical direct-drive motor passive temperature difference composite cooling device according to claim 1, characterized in that, A sealing ring is arranged at the connection part between the lower end cover and the motor stepped shaft.

6. The vertical direct-drive motor non-powered temperature difference composite cooling device according to claim 1, wherein, A junction box is arranged at the rear side of the motor housing.

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