Unpowered temperature difference composite cooling device for vertical direct drive motor

Abstract

The invention relates to a cooling device, in particular to an unpowered temperature difference composite cooling device for a vertical direct drive motor. An unpowered temperature difference composite cooling device for a vertical direct drive motor comprises a shell assembly, a built-in assembly is arranged in the shell assembly, and an air guide cooling assembly corresponding to the built-in assembly is arranged outside the shell assembly. The invention aims to provide the unpowered temperature difference composite cooling device for the vertical direct-drive motor, which is simple in structure, energy-saving and better in effect.

Description

Technical Field

[0001] The invention relates to a cooling device, in particular to a vertical direct-drive motor unpowered 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 heating problems. The temperature rise of the closed inner cavity of a conventional IP55 protection grade water-cooled vertical permanent magnet direct drive motor has always been a focus of motor design. When a larger volume of wind-water cooling or wind-to-air cooling device is not used, the internal temperature rise of the water-cooled motor is still relatively high, which seriously reduces the motor's magnetic energy product, efficiency and other indicators, and significantly increases the design cost. Summary of the invention

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

[0004] To achieve the above object, the present invention adopts the following technical solutions: A vertical direct-drive motor unpowered temperature difference composite cooling device comprises a shell assembly, wherein a built-in assembly is arranged inside the shell assembly, and an air guide cooling assembly is arranged outside the shell assembly corresponding to the built-in assembly; the shell assembly comprises a motor casing, wherein an upper end cover is arranged at the top end of the motor casing, and a lower end cover is arranged at the bottom end of the motor casing; the built-in assembly comprises a motor stepped shaft, wherein the upper end of the motor stepped shaft is rotatably connected to the upper end cover via a first bearing, and the lower end of the motor stepped shaft is rotatably connected to the lower end cover via a second bearing, a rotor is sleeved on the periphery of the middle part of the motor stepped shaft, a rotor magnetic isolation punching sheet is arranged on the periphery of the rotor via a plurality of rotor hubs, and a stator is arranged on the periphery of the rotor magnetic isolation punching sheet at intervals, The outer wall of the stator is correspondingly arranged on the inner wall of the motor casing; the air-guiding cooling assembly includes an inner air-guiding channel located in the motor casing, and two upper air-guiding metal tubes connected to the inner air-guiding channel are symmetrically arranged on the upper end cover, the bottom ends of the upper air-guiding metal tubes are connected to the top of the heat exchange device, the bottom of the heat exchange device is connected to the top of the lower air-guiding metal tube, the terminal end of the lower air-guiding metal tube is connected to the bottom of the motor casing and is located above the lower end cover, and a cooling water pipe sleeve is provided on the periphery of the motor casing corresponding to the heat exchange device, wherein the inner air-guiding channel, the upper air-guiding metal tubes, the heat exchange device and the lower air-guiding metal tubes are interconnected to form a closed-loop air-guiding channel.

[0005] Preferably, the heat exchange device comprises a heat exchange device shell, a plurality of heat-conducting metal sheets are longitudinally arranged in the heat exchange device shell, and an air passage is correspondingly formed between two adjacent heat-conducting metal sheets.

[0006] 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 circumference in the cooling water pipe sleeve, wherein two adjacent cooling water pipes are respectively connected with a water jacket cooling water inlet and a water jacket cooling water outlet.

[0007] Preferably, the bottom end of the motor stepped shaft extends downward to below the lower end cover, and a keyway is correspondingly provided on the extended portion of the motor stepped shaft.

[0008] Preferably, the horizontal cross-sectional areas of the upper air-conducting metal tube and the lower air-conducting metal tube are both smaller than the horizontal cross-sectional area of ​​the outer shell of the heat exchange device.

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

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

[0011] The beneficial effects of the present invention are: 1. The present invention includes a shell component, a built-in component is arranged inside the shell component, and an air-conducting cooling component is arranged outside the shell component corresponding to the built-in component. The shell component can provide a placement space for the built-in component and can also prevent dust, moisture, corrosive substances and other external impurities from invading the interior of the motor. The arrangement of the built-in component enables the vertical direct-drive motor to normally realize its function. The arrangement of the air-conducting cooling component can guide the hot air flow in the vertical direct-drive motor so that the hot air flow can realize self-circulation through the buoyancy and gravity of the hot air flow itself without increasing the circulation power consumption, and combine the heat exchange and cooling effect of the heat exchange device and the cooling water pipe sleeve to form circulation cooling. Compared with the traditional vertical direct-drive motor cooling device, this device does not need to increase the air flow circulation. The utility model discloses a kind of heat exchanger and the heat exchanger of the motor is connected with the upper end cover of the motor housing, and the heat exchanger of the motor housing ... The lower end is rotatably connected to the lower end cover through a second bearing, and a rotor is sleeved on the outer periphery of the middle part of the motor step shaft. The outer periphery of the rotor is provided with rotor magnetic isolation sheets through multiple rotor hubs, and the outer periphery of the rotor magnetic isolation sheets is covered with a stator at intervals, and the outer wall of the stator is correspondingly arranged on the inner wall of the motor casing. This arrangement enables the vertical direct-drive motor to normally perform its function; the air guide cooling component includes an inner air guide channel located in the motor casing, and two upper air guide metal tubes connected to the inner air guide channel are symmetrically arranged on the upper end cover, the bottom end of the upper air guide metal tube is connected to the top of the heat exchange device, and the bottom of the heat exchange device is connected to the top of the lower air guide metal tube, and two lower air guide metal tubes are arranged corresponding to the upper air guide metal tubes, and the ends of the lower air guide metal tubes are connected. At the bottom of the motor housing and above the lower end cover, a cooling water pipe sleeve is provided on the periphery of the motor housing corresponding to the heat exchange device sleeve, wherein the inner air guide channel, the upper air guide metal pipe, the heat exchange device and the lower air guide metal pipe are interconnected to form a closed circulation air guide channel. This arrangement can form circulating cooling by circulating the hot air flow in the closed circulation air guide channel formed by the inner air guide channel, the upper air guide metal pipe, the heat exchange device and the lower air guide metal pipe being interconnected, and combining the heat exchange cooling effect of the heat exchange device and the cooling water pipe sleeve during the circulating flow process. The principle of self-circulation of hot air flow 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, and the cooling effect can be improved by combining the heat exchange device with the cooling water pipe sleeve.

[0012] 2. The heat exchange device of the present invention includes a heat exchange device shell, and a plurality of heat-conducting metal sheets are arranged longitudinally in the heat exchange device shell, and air channels are formed between two adjacent heat-conducting metal sheets. This arrangement can accelerate the circulation of hot air flow in the closed-loop air guide channel formed by the inner air guide channel, the upper air guide metal tube, the heat exchange device (multiple air channels) and the lower air guide metal tube through the heat-conducting metal sheets and the air channels formed between the two adjacent heat-conducting metal sheets, thereby accelerating the heat-conducting metal sheets to absorb heat in the hot air flow, which is beneficial to accelerating the hot and cold cycle of the hot air flow, and further can efficiently and quickly reduce the temperature of the inner cavity of the vertical direct-drive motor.

[0013] 3. The cooling water pipe sleeve of the present invention is a closed annular structure, and a plurality of cooling water pipes arranged in a serpentine shape are sequentially arranged in a circle in the cooling water pipe sleeve, wherein two adjacent cooling water pipes are respectively connected and provided with a water jacket cooling water inlet and a water jacket cooling water outlet. The cooling water pipe sleeve is designed to be an annular structure and is arranged in close contact with the outer wall of the motor housing, which can evenly 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 of the vertical direct-drive motor, and improve the cooling efficiency; the design of the plurality of cooling water pipes arranged in a serpentine shape and sequentially forming a circle, first of all, compared with the straight pipe cooling The water pipe has a larger surface area, which can enhance the heat exchange efficiency between the water flow and the wall of the cooling water pipe. Secondly, the continuously curved internal flow channel in this design can promote the formation of turbulence in the water flow. This turbulent state can more effectively stir the water flow to break the thermal boundary layer formed by laminar flow, which 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) closer, which is conducive to the cooling water pipe sleeve to more evenly absorb the heat transferred from the inner cavity of the vertical direct-drive motor to the motor casing, thereby making it cooler for the vertical direct-drive motor more evenly and reducing the risk of local overheating of the vertical direct-drive motor.

[0014] 4. The bottom end of the motor stepped shaft of the present invention extends downward to below the lower end cover, and a keyway is correspondingly provided on the extended portion of the motor stepped shaft. This arrangement facilitates the installation and disassembly of external transmission components, and also provides convenience for daily maintenance and overhaul.

[0015] 5. The horizontal cross-sectional areas of the upper air-conducting metal tube and the lower air-conducting metal tube of the present invention are both smaller than the horizontal cross-sectional area of ​​the shell of the heat exchange device. This arrangement increases the flow rate of the gas in the upper air-conducting metal tube and the lower air-conducting metal tube in the inner cavity of the vertical direct-drive motor, and reduces the flow rate in the heat exchange device (relative to the gas flow rate in the upper air-conducting metal tube and the lower air-conducting metal tube). Therefore, during the self-circulation 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 increase in temperature during the operation of the motor and can quickly flow into the multiple air channels in the heat exchange device after being guided by the upper air-conducting metal tube. Due to the increase in the cross-sectional area of ​​the heat exchange device (compared with the cross-sectional areas of the upper air-conducting metal tube and the lower air-conducting metal tube), the air flow rate is reduced. The heat in the airflow can be fully absorbed by multiple heat-conducting metal sheets and conducted to the cooling water pipe sleeve. The low-temperature airflow after heat exchange gradually enters the inner cavity of the vertical direct-drive motor through the guiding effect of the lower air-conducting metal pipe due to its own gravity. The cross-sectional area of ​​the lower air-conducting metal pipe is reduced (compared with the cross-sectional area of ​​the outer shell of the heat exchange device), resulting in an increase in the airflow velocity, so that the low-temperature airflow can be introduced into the inner cavity of the vertical direct-drive motor faster. The entire airflow circulation process switches the channel area, which ensures the heat exchange efficiency while also accelerating the airflow circulation efficiency, which is beneficial to continuously and quickly dissipating the heat and cooling the inner cavity of the vertical direct-drive motor to maintain the stable temperature of the inner cavity of the vertical direct-drive motor, and is beneficial to improving the efficiency of the vertical direct-drive motor.

[0016] 6. A sealing ring is provided at the connection between the lower end cover and the motor stepped shaft of the present invention. This arrangement can effectively prevent external dust, moisture and other pollutants from entering the interior of the vertical direct-drive motor, can protect the vertical direct-drive motor from damage by environmental factors, is beneficial to improving the reliability of the vertical direct-drive motor, and to a certain extent extends the service life of the vertical direct-drive motor.

[0017] 7. A junction box is provided at the rear side of the motor housing of the present invention, and the junction box can provide a safe and reliable interface for a power supply or an external control system to ensure that the vertical direct-drive motor can operate stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the top view structure of the present invention; Figure 3 It is a schematic diagram of a top view and cross-section structure of an air guide cooling assembly of the present invention; Figure 4 It is a partial top view and cross-sectional structural schematic diagram of the air guide cooling assembly of the present invention.

[0019] Figure markings: 1: shell assembly, 2: built-in assembly, 3: air-guiding cooling assembly, 4: motor casing, 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 tube, 16: heat exchange device, 17: lower air-guiding metal tube, 18: cooling water pipe sleeve, 19: heat exchange device housing, 20: heat-conducting metal sheet, 21: air channel, 22: cooling water pipeline, 23: water jacket cooling water inlet, 24: water jacket cooling water outlet, 25: keyway, 26: sealing ring, 27: junction box. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood 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 "install", "connect", "connect", and "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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, it includes a shell component 1, a built-in component 2 is arranged inside the shell component 1, and an air-conducting cooling component 3 is arranged outside the shell component 1 corresponding to the built-in component 2. The shell component 1 can provide a placement space for the built-in component 2 and can also prevent dust, moisture, corrosive substances and other external impurities from invading the inside of the motor. The setting of the built-in component 2 enables the vertical direct-drive motor to normally realize its function. The setting of the air-conducting cooling component 3 can guide the hot air flow in the vertical direct-drive motor so that the hot air flow can realize self-circulation through the buoyancy and gravity of the hot air flow itself without increasing the circulation power consumption, and combine the heat exchange cooling effect of the heat exchange device 16 and the cooling water pipe sleeve 18 to form circulation cooling. Compared with the traditional vertical direct-drive motor cooling device, this device does not need to increase the air flow circulation power consumption, is more energy-efficient, realizes self-circulation through the buoyancy and gravity of the hot air flow itself, and combines the heat exchange cooling effect of the heat exchange device 16 and the cooling water pipe sleeve 18 to form circulation cooling, which is easy to achieve while achieving high cooling effect. The effect is better; the housing component 1 includes a motor housing 4, the top of the motor housing 4 is provided with an upper end cover 5, and the bottom of the motor housing 4 is provided with a lower end cover 6. The motor housing 4, the upper end cover 5 and the lower end cover 6 are separated, which is convenient for daily inspection, cleaning and maintenance of the vertical direct-drive motor. At the same time, the upper end cover 5 in the technical solution is connected with one end of the upper air guide metal tube 15, which is conducive to accelerating the self-circulation of the hot air flow in the motor, thereby improving the heat dissipation efficiency inside the motor; the built-in component 2 includes a motor stepped shaft 7, the motor The upper end of the motor step shaft 7 is rotatably connected to the upper end cover 5 through the first bearing 8, and the lower end of the motor step shaft 7 is rotatably connected to the lower end cover 6 through the second bearing 9. A rotor 10 is sleeved on the periphery of the middle part of the motor step shaft 7. A rotor magnetic isolation sheet 12 is arranged on the periphery of the rotor 10 through a plurality of rotor hubs 11. A stator 13 is arranged on the periphery of the rotor magnetic isolation sheet 12 at intervals. The outer wall of the stator 13 is correspondingly arranged on the inner wall of the motor housing 4. This arrangement enables the vertical direct drive motor to normally realize its function.The air guide cooling assembly 3 includes an inner air guide channel 14 located in the motor housing 4, and two upper air guide metal tubes 15 connected to the inner air guide channel 14 are symmetrically arranged on the upper end cover 5, and the bottom end of the upper air guide metal tube 15 is connected to the top of the heat exchange device 16, and the bottom of the heat exchange device 16 is connected to the top of the lower air guide metal tube 17. Two lower air guide metal tubes 17 are provided corresponding to the upper air guide metal tubes 15, and the ends of the lower air guide metal tubes 17 are connected and arranged at the bottom of the motor housing 4 and located above the lower end cover 6. The outer periphery of the motor housing 4 is provided with a cooling water pipe sleeve 18 corresponding to the heat exchange device 16, wherein the inner air guide channel 14, the upper air guide metal tube 15, and the lower air guide metal tube 17 are provided with a cooling water pipe sleeve 18 corresponding to the heat exchange device 16. The metal tube 15, the heat exchange device 16 and the lower air guide metal tube 17 are interconnected to form a closed circulation air guide channel. This arrangement can form circulation cooling by circulating the hot air flow in the closed circulation air guide channel formed by the inner air guide channel 14, the upper air guide metal tube 15, the heat exchange device 16 and the lower air guide metal tube 17, and combining the heat exchange cooling effect of the heat exchange device 16 and the cooling water pipe sleeve 18 during the circulation process. The principle of hot air flow self-circulation is used in the entire circulation cooling process, and there is no need to increase the power consumption of air flow circulation, which is more energy-saving and environmentally friendly. In addition, the cooling effect can be improved by combining the heat exchange device 16 with the cooling water pipe sleeve 18. ;

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the heat exchange device 16 includes a heat exchange device shell 19, which is sealed and welded to the outer wall of the cooling water pipe sleeve 18. A plurality of heat-conducting metal sheets 20 are arranged longitudinally in the heat exchange device shell 19, and the plurality of heat-conducting metal sheets 20 are integrally welded to the outer wall of the cooling water pipe sleeve 18. An air channel 21 is correspondingly formed between two adjacent heat-conducting metal sheets 20. This arrangement can accelerate the circulation of hot air flow in the closed-loop air guide channel formed by the inner air guide channel 14, the upper air guide metal pipe 15, the heat exchange device 16 (multiple air channels 21) and the lower air guide metal pipe 17 through the heat-conducting metal sheets 20 and the air channel 21 formed between the two adjacent heat-conducting metal sheets 20, thereby accelerating the heat-conducting metal sheets 20 to absorb heat in the hot air flow, which is beneficial to accelerating the hot and cold cycle of the hot air flow, and thus can efficiently and quickly reduce the temperature of the inner cavity of the vertical direct-drive motor.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the cooling water pipe sleeve 18 is a closed annular structure, and a plurality of cooling water pipes 22 arranged in a serpentine shape are sequentially arranged in a circle in the cooling water pipe sleeve 18, wherein two adjacent cooling water pipes 22 are respectively connected with a water jacket cooling water inlet 23 and a water jacket cooling water outlet 24, and the cooling water pipe sleeve 18 is designed to be an annular structure and is arranged in close contact with the outer wall of the motor housing 4, which can evenly and effectively take away the heat transferred from the inner cavity of the vertical direct-drive motor to the motor housing 4, reduce the local overheating of the vertical direct-drive motor, and improve the cooling efficiency; the plurality of cooling water pipes 22 are arranged in a serpentine shape and sequentially form a circle. First of all, this design is better than the direct drive motor. The tubular cooling water pipe has a larger surface area, thereby enhancing the heat exchange efficiency between the water flow and the wall of the cooling water pipe 22. Secondly, the continuously curved internal flow channel in this design can promote the formation of turbulence in the water flow. This turbulent state can more effectively stir the water flow to break the thermal boundary layer formed by laminar flow, which 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 conducive to the cooling water pipe sleeve 18 to more evenly absorb the heat transferred from the inner cavity of the vertical direct-drive motor to the motor housing 4, thereby making it more evenly cooling the vertical direct-drive motor and reducing the risk of local overheating of the vertical direct-drive motor.

[0026] like Figure 1 As shown, the bottom end of the motor stepped shaft 7 extends downward to below the lower end cover 6, and a keyway 25 is correspondingly provided on the extended portion of the motor stepped shaft 7. This arrangement facilitates the installation and disassembly of external transmission components, and also provides convenience for daily maintenance and inspection.

[0027] like Figure 1 and Figure 2As shown, the horizontal cross-sectional areas of the upper air-conducting metal tube 15 and the lower air-conducting metal tube 17 are both smaller than the horizontal cross-sectional area of ​​the heat exchange device housing 19. This arrangement increases the flow rate of the gas in the inner cavity of the vertical direct-drive motor in the upper air-conducting metal tube 15 and the lower air-conducting metal tube 17, and reduces the flow rate in the heat exchange device 16 (relative to the gas flow rate in the upper air-conducting metal tube 15 and the lower air-conducting metal tube 17). Therefore, during the self-circulation 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 increase in temperature 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-conducting metal tube 15. Since the cross-sectional area of ​​the heat exchange device 16 is increased (compared to the cross-sectional areas of the upper air-conducting metal tube 15 and the lower air-conducting metal tube 17), the hot air flow in the vertical direct-drive motor floats upward due to the increase in temperature during the operation of the motor and can quickly flow into the multiple air channels 21 in the heat exchange device 16. ) causes the air flow velocity to decrease, so that the heat in the air flow can be fully absorbed by the multiple heat-conducting metal sheets 20 and conducted to the cooling water pipe sleeve 18. The low-temperature air flow after heat exchange gradually enters the inner cavity of the vertical direct-drive motor through the guiding effect of the lower air-conducting metal tube 17 due to its own gravity. Since the cross-sectional area of ​​the lower air-conducting metal tube 17 is reduced (compared with the cross-sectional area of ​​the heat exchange device shell 19), the air flow velocity is increased, 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 ensures the heat exchange efficiency while also accelerating the air flow circulation efficiency, which is beneficial to continuously and quickly dissipating the heat and cooling the inner cavity of the vertical direct-drive motor to maintain the stable temperature of the inner cavity of the vertical direct-drive motor, and is beneficial to improving the efficiency of the vertical direct-drive motor.

[0028] like Figure 1 As shown, a sealing ring 26 is provided at the connection between the lower end cover 6 and the motor stepped shaft 7. This arrangement can effectively prevent external dust, moisture and other pollutants from entering the interior of the vertical direct-drive motor, can protect the vertical direct-drive motor from damage by environmental factors, is beneficial to improving the reliability of the vertical direct-drive motor, and to a certain extent prolongs the service life of the vertical direct-drive motor.

[0029] like Figure 2 and Figure 3 As shown, a junction box 27 is provided on the rear side of the motor housing 4. The junction box 27 can provide a safe and reliable interface for a power supply or an external control system to ensure that the vertical direct-drive motor can operate stably.

[0030] The specific operating principle is: First, the water jacket cooling water inlet and the water jacket cooling water outlet are connected to an external water pipe, an external water pump, 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 pipe sleeve through the external water pipe and the water jacket cooling water inlet in turn, and flows through multiple cooling water pipes in turn for one week before flowing out from the water jacket cooling water outlet, thereby realizing the cooling water circulation; the heat generated inside the vertical direct-drive motor during operation turns the air in the vertical direct-drive motor into hot air flow. The hot air flow in the vertical direct-drive motor floats upward due to the increase in temperature during the operation of the motor, 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 is increased (compared to the upper The cross-sectional area of ​​the air guide metal tube and the lower air guide metal tube) causes the air flow velocity to decrease, 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 pipe sleeve. The low-temperature airflow after absorbing the heat exchange by the circulating cooling water in the cooling water pipe sleeve gradually enters the inner cavity of the vertical direct-drive motor through the guiding effect of the lower air guide metal tube due to its own gravity. Since the cross-sectional area of ​​the lower air guide metal tube is reduced (compared with the cross-sectional area of ​​the outer shell of the heat exchange device), the air flow velocity is increased, so that the low-temperature airflow can be introduced into the inner cavity of the vertical direct-drive motor faster. The low-temperature airflow 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 airflow becomes a hot airflow 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 airflow and the circulation of the cooling water.

[0031] The electrical components appearing in this article can all be connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device such as a computer that plays a control role. The conventional known device such as a computer that plays 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 for the technical solution according to the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more matching and consistent 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 technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0032] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and circuit connection in detail.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, 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 unpowered temperature difference composite cooling device, characterized in that: It comprises a shell component, wherein a built-in component is arranged inside the shell component, and an air guide cooling component is arranged outside the shell component corresponding to the built-in component; The housing assembly comprises a motor housing, an upper end cover is arranged at the top end of the motor housing, and a lower end cover is arranged at the bottom end of the motor housing; The built-in component comprises a motor stepped shaft, the upper end of the motor stepped shaft is rotatably connected to the upper end cover via a first bearing, the lower end of the motor stepped shaft is rotatably connected to the lower end cover via a second bearing, a rotor is sleeved on the periphery of the middle portion of the motor stepped shaft, a rotor magnetic isolation sheet is arranged on the periphery of the rotor via a plurality of rotor hubs, a stator is arranged at intervals around the periphery of the rotor magnetic isolation sheet, and the outer wall of the stator is correspondingly arranged on the inner wall of the motor housing; The air-guiding cooling assembly includes an inner air-guiding channel located in the motor casing, and two upper air-guiding metal tubes connected to the inner air-guiding channel are symmetrically arranged on the upper end cover, the bottom ends of the upper air-guiding metal tubes are connected to the top of the heat exchange device, the bottom of the heat exchange device is connected to the top of the lower air-guiding metal tube, the terminal end of the lower air-guiding metal tube is connected to the bottom of the motor casing and is located above the lower end cover, and a cooling water pipe sleeve is provided on the periphery of the motor casing corresponding to the heat exchange device, wherein the inner air-guiding channel, the upper air-guiding metal tubes, the heat exchange device and the lower air-guiding metal tubes are interconnected to form a closed-loop air-guiding channel.

2. The vertical direct-drive motor unpowered temperature difference composite cooling device according to claim 1 is characterized in that: The heat exchange device comprises a heat exchange device shell, in which a plurality of heat-conducting metal sheets are arranged longitudinally, and an air passage is formed between two adjacent heat-conducting metal sheets.

3. The vertical direct-drive motor unpowered temperature difference composite cooling device according to claim 1 is characterized in that: 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 circumference in the cooling water pipe sleeve, wherein two adjacent cooling water pipes are respectively connected with a water jacket cooling water inlet and a water jacket cooling water outlet.

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

5. The vertical direct-drive motor unpowered temperature difference composite cooling device according to claim 2, characterized in that: The horizontal cross-sectional areas of the upper gas-conducting metal tube and the lower gas-conducting metal tube are both smaller than the horizontal cross-sectional area of ​​the shell of the heat exchange device.

6. The vertical direct-drive motor unpowered temperature difference composite cooling device according to claim 1, characterized in that: A sealing ring is provided at the connection between the lower end cover and the motor stepped shaft.

7. The vertical direct-drive motor unpowered temperature difference composite cooling device according to claim 1, characterized in that: A junction box is arranged on the rear side of the motor casing.

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