A device for concentrating heat dissipation and heat recycling of an electric machine

Abstract

This application belongs to the field of motor heat recovery technology, and particularly relates to a device for centralized heat dissipation and heat recovery of motors. It includes a tubular air intake assembly, a motor enclosure, and a heat recovery device arranged sequentially from front to back. The motor is placed inside the motor enclosure. The tubular air intake assembly is connected to the motor enclosure, and the outlet end of the tubular air intake assembly is aligned with the motor housing. An air outlet duct is provided on the motor enclosure, and the bottom surface of the inner cavity of the air outlet duct is not higher than the bottom surface of the inner cavity of the motor enclosure. The air outlet duct is connected to the heat recovery device. The tubular air intake assembly, the motor enclosure, and the heat recovery device are all connected to a control system. The control system detects the air intake volume of the tubular air intake assembly, the temperature of the inner cavity of the motor enclosure, and the air intake temperature of the heat recovery device. The control system adjusts the air intake volume of the tubular air intake assembly according to the temperature of the inner cavity of the motor enclosure to enhance the motor's heat dissipation effect.

Description

Technical Field

[0001] This application belongs to the field of motor heat recovery technology, and in particular relates to a device for centralized heat dissipation and heat recovery of motors. Background Technology

[0002] Electric motors, especially large motors, have motor cooling devices to cool them during operation. These devices release the heat generated by the motor into the surrounding space, but this heat cannot be reused. In addition, due to the complex heat dissipation structure on the motor surface, dust accumulates around the motor during operation, reducing its heat dissipation efficiency. Furthermore, the dust around the motor moves with the airflow, causing it to move around erratically. Utility Model Content

[0003] In order to solve the above problems, this application provides a device for centralized heat dissipation and heat recovery of motors.

[0004] The purpose of this application is to provide a device for centralized heat dissipation and heat recovery of motors. The motor is covered by a motor enclosure, and airflow is delivered to the inside of the motor enclosure by a tubular air intake assembly. The airflow is directed at the motor casing so that the heat emitted by the motor is carried away by the airflow and enters the heat recovery device, which recovers and reuses this heat. The filter device filters and collects dust in the airflow.

[0005] To achieve the purpose of this application, the technical solution of this application is as follows:

[0006] A device for centralized heat dissipation and heat recovery of an electric motor includes a tubular air intake assembly, a motor enclosure, and a heat recovery device arranged sequentially from front to back. The motor is placed inside the motor enclosure. The tubular air intake assembly is connected to the motor enclosure. The air outlet of the tubular air intake assembly is aligned with the motor housing. An air outlet duct is provided on the motor enclosure. The bottom surface of the inner cavity of the air outlet duct is not higher than the bottom surface of the inner cavity of the motor enclosure. The air outlet duct is connected to the heat recovery device. The tubular air intake assembly, the motor enclosure, and the heat recovery device are all connected to a control system. The control system detects the air intake volume of the tubular air intake assembly, the temperature of the inner cavity of the motor enclosure, and the air intake temperature of the heat recovery device. The control system adjusts the air intake volume of the tubular air intake assembly according to the temperature of the inner cavity of the motor enclosure.

[0007] Furthermore, a filter device is installed between the motor enclosure and the heat utilization device.

[0008] Furthermore, the tubular air intake assembly includes several air intake pipes, and the air intake end of the air intake pipe is provided with an air intake connecting flange, which is connected to the air intake device.

[0009] Furthermore, a support frame is installed on the air inlet duct.

[0010] Furthermore, the motor enclosure includes a lower cover, on which an upper cover is mounted.

[0011] Furthermore, an extended cover is provided on the upper cover, and an extended air duct is provided on the extended cover. The extended air duct is connected to an air inlet device, and the air inlet device draws air into the extended cover through the extended air duct.

[0012] Furthermore, a baffle is installed inside the lower cover to guide the airflow toward the air outlet.

[0013] Furthermore, a heat exchanger is installed inside the heat utilization device, and the hot air blown out of the air outlet is replaced by the heat exchanger and transferred to the energy storage device.

[0014] Compared with the prior art, the beneficial effects of this application are as follows:

[0015] 1. This application utilizes a motor enclosure to cover the motor, reducing the impact of external dust on the motor. The motor noise is weakened by the motor enclosure, reducing the transmission of noise from the motor during operation to the outside. The airflow generated by the air intake device enters the interior of the motor enclosure along the tubular air intake assembly. The heat emitted by the motor is carried away by the airflow and enters the heat utilization device. First, the filter device filters and collects the dust in the airflow to prevent the dust from affecting the heat utilization device. Then, the heat utilization device recovers and reuses this part of the heat.

[0016] 2. The airflow generated by the air intake device of this application enters the interior of the motor enclosure along the tubular air intake assembly. The tubular air intake assembly has multiple air intake pipes. The air intake pipes arranged in different positions can deliver airflow to multiple positions of the motor housing, thereby removing the heat generated by the motor housing and the dust on the surface of the motor housing, avoiding the impact of dust accumulation on the motor, and keeping the motor appearance clean. The temperature of the working site during motor operation can be monitored through the control system. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0018] Figure 1 This is a schematic diagram of the overall structure of this application;

[0019] Figure 2 This is a schematic diagram of the overall structure of the tubular air intake assembly and the motor enclosure in this application.

[0020] Figure 3 for Figure 2 A top view structural diagram;

[0021] Figure 4 for Figure 2 A schematic diagram of the internal structure.

[0022] In the picture:

[0023] 10. Tubular air inlet assembly; 11. Air inlet duct; 12. Support frame; 13. Air inlet connecting flange;

[0024] 20. Motor enclosure; 21. Lower enclosure; 22. Upper enclosure; 23. Connecting wing plate; 24. Viewing window; 25. Extended enclosure; 26. Extended air duct; 27. Air outlet duct; 28. Bottom guide plate.

[0025] 30. Filtration device;

[0026] 40. Heat utilization device;

[0027] 50. Control system. Detailed Implementation

[0028] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] In this application, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various parts or elements of this application and do not specifically refer to any part or element in this application. They should not be construed as limiting this application.

[0031] Example 1

[0032] This embodiment is a device for centralized heat dissipation and heat recovery of motors. The device is applied to motors, and its first purpose is to cover the motor, concentrate and collect the heat emitted by the motor, and realize the reuse of this heat. Its second purpose is to reduce the dust on the surface of the motor and collect this dust to avoid the dust affecting the heat dissipation of the motor and the surrounding environment of the motor.

[0033] This embodiment provides a device for centralized heat dissipation and heat recovery of motors, applicable to dusty workshops such as cement plants. It includes a tubular air inlet assembly 10, a motor enclosure 20, and a heat recovery device 40 arranged sequentially from front to back. The motor is placed inside the motor enclosure 20. The tubular air inlet assembly 10 is connected to the motor enclosure 20, and the outlet of the tubular air inlet assembly 10 is aligned with the motor housing. An air outlet duct 27 is installed on the motor enclosure 20. If a filter device 30 is not required, the air outlet duct 27 is directly connected to the heat recovery device 40. If a filter device 30 is required, a filter device 30 is placed between the motor enclosure 20 and the heat recovery device 40. The inlet of the filter device 30 is connected to the air outlet duct 27, and the outlet of the filter device 30 is connected to the heat recovery device 40. The air outlet duct 27 is indirectly connected to the heat recovery device 40 through the filter device 30.

[0034] An air intake device is installed at the front end or inlet end of the tubular air intake assembly 10. Specifically, the tubular air intake assembly 10 includes several air intake pipes 11. For example, in this embodiment, the air intake pipes 11 can be arranged around the central axis of the motor, so that the air outlet end of the tubular air intake assembly 10 is aligned with the motor housing. The middle section of the air intake pipe 11 is bent so that the air inlet end of the air intake pipe 11 converges towards the center. An air intake connecting flange 13 is installed at the air inlet end of the air intake pipe 11. The air intake connecting flange 13 is connected to the air intake device. The air generated by the air intake device enters the interior of the motor enclosure 20 along the air intake pipe 11. In this embodiment, the air intake device can be a blower. If a large flow of air is required in a short time, an air pump can also be used. Alternatively, the air intake connecting flange 13 can be connected to a main pipe with two branch pipes. One branch pipe is connected to the blower, and the other branch pipe is connected to the air pump. The air pump or blower can also be replaced with a Roots blower or a magnetic levitation blower.

[0035] In this embodiment, a support frame 12 is installed on the air inlet pipe 11. The support frame 12 supports all the air inlet pipes 11 to ensure the stability of the air inlet pipe 11 when air enters the inner cavity of the motor enclosure 20.

[0036] The motor enclosure 20 of this embodiment includes a lower enclosure 21, on which an upper enclosure 22 is mounted. Specifically, the upper end of the lower enclosure 21 has a connecting wing plate 23, and the lower end of the upper enclosure 22 has a connecting wing plate 23. The connecting wing plates 23 of the lower enclosure 21 and the upper enclosure 22 are fixed together by bolts. As one embodiment, the lower enclosure 21 includes a base plate, with a lower front end plate at the front end and a lower rear end plate at the rear end. The lower front end plate is higher than the lower rear end plate, allowing the air inlet pipe 11 to be fully installed on the lower front end plate. The motor is mounted on the base plate. Correspondingly, the upper enclosure 22 includes a top plate, with an upper front end plate at the front end and an upper rear end plate at the rear end. The height of the upper front end plate is greater than the height of the upper rear end plate. A viewing window 24 is mounted on the top plate, through which the inner cavity of the motor enclosure 20 can be seen, especially the dust on the motor surface, facilitating inspection of whether the motor surface is affected by dust.

[0037] The bottom surface of the inner cavity of the air outlet duct 27 is not higher than the bottom surface of the inner cavity of the motor enclosure 20. The air outlet duct 27 is installed on the upper and lower end plates by bolts, or the air outlet duct 27 is installed on the upper and lower end plates by bolts.

[0038] As a complementary structure, since other structures, such as a transmission structure, are installed on the output shaft of the motor, in this embodiment, an extended cover 25 is installed on the upper cover 22. The extended cover 25 is fixed to the upper cover 22 by bolts. An extended air duct 26 is installed on the extended cover 25. The extended air duct 26 is connected to an air inlet device. The air inlet device introduces air into the extended cover 25 through the extended air duct 26. The air inlet device inputs airflow into the extended cover 25 through the extended air duct 26 to prevent the pressure inside the extended cover 25 from being lower than the pressure inside the motor enclosure 20, thereby preventing dust from the inside of the motor enclosure 20 from entering the extended cover 25. In addition, in this embodiment, a guide plate 28 is installed inside the lower cover 21. The guide plate 28 guides the airflow to flow towards the air outlet 27, so that dust moves along the guide plate 28 towards the air outlet 27 under the drive of the airflow.

[0039] As a more specific implementation, the output shaft of the motor in this embodiment is connected to other structures differently. The extended cover 25 or other enclosed cover structure connected to the extended cover 25 in this embodiment will adapt to the size and shape of other structures. The motor, transmission structure and other structures associated with the motor are completely covered by the motor enclosure 20, the extended cover 25 and other enclosed cover structures.

[0040] The motor enclosure 20 of this embodiment can be installed on the ground. If necessary, shock-absorbing plates, shock-absorbing pads, or shock-absorbing feet can be installed to prevent vibration of the motor enclosure 20 or the motor inside the motor enclosure 20.

[0041] When the motor is a horizontal motor, it can be installed relatively easily in the inner cavity of the motor enclosure 20. When the motor is a vertical motor, it can be installed on the fixed bracket by installing a fixed bracket in the inner cavity of the motor enclosure 20.

[0042] In this embodiment, the cross-sectional area of ​​the front end of the air outlet 27 is larger than that of the rear end of the air outlet 27. The filter device 30 in this embodiment uses existing equipment. The filter device 30 is equipped with a filter element, which is replaced periodically or according to the air intake volume.

[0043] The tubular air intake assembly 10, the motor enclosure 20, and the heat utilization device 40 are all connected to the control system 50. The control system 50 detects the air intake volume of the tubular air intake assembly 10, the temperature of the inner cavity of the motor enclosure 20, and the air intake temperature of the heat utilization device 40. The control system 50 adjusts the air intake volume of the tubular air intake assembly 10 according to the temperature of the inner cavity of the motor enclosure 20. In addition, the filter device 30 can also be connected to the control system 50 to monitor the temperature of the airflow flowing out of the motor enclosure 20.

[0044] The heat utilization device 40 in this embodiment is equipped with a heat exchanger. The hot air blown out of the air outlet 27 is transferred to the energy storage device through the heat exchanger. Specifically, the energy storage device in this embodiment is a water storage tank. The heat exchanger transfers heat to the water storage tank, causing the water temperature in the water storage tank to rise. This part of the heat is stored by using the water in the water storage tank. Alternatively, the hot air stream purified by the filtration device 30 in this embodiment can be directly discharged into the water in the water storage tank, causing the water temperature in the water storage tank to rise.

[0045] The heat utilization device 40 in this embodiment can use a medium with a lower boiling point. The medium absorbs the heat inside the motor enclosure 20, causing the medium to become gaseous, and the gaseous medium is used for energy storage or heat reuse.

[0046] Example 2

[0047] In a production workshop or factory, there are multiple motors. In this embodiment, a motor enclosure 20 is installed on each motor. The motor enclosures 20 are arranged side by side. The air outlets 27 of the motor enclosures 20 can be grouped together, or they can be arranged separately according to the differences and distances of the areas. Alternatively, the air outlets 27 of adjacent areas can be grouped together. That is, a portion of the air outlets 27 of all the air outlets 27 can be grouped together. Correspondingly, the filter device 30 can be connected to the grouped air outlets 27 or connected to the air outlets 27 individually.

[0048] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0049] While the specific embodiments of this application have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this application. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this application are still within the scope of protection of this application.

Claims

1. A device for centralized heat dissipation and heat recovery of motors, characterized in that: It includes a tubular air intake assembly, a motor enclosure, and a heat utilization device arranged sequentially from front to back, with the motor placed inside the motor enclosure. The tubular air inlet assembly is connected to the motor enclosure. The air outlet of the tubular air inlet assembly is aligned with the motor housing. An air outlet duct is provided on the motor enclosure. The bottom surface of the inner cavity of the air outlet duct is not higher than the bottom surface of the inner cavity of the motor enclosure. The air outlet duct is connected to a heat utilization device; The tubular air intake assembly, motor enclosure, and heat utilization device are all connected to the control system. The control system detects the air intake volume of the tubular air intake assembly, the temperature of the inner cavity of the motor enclosure, and the air intake temperature of the heat utilization device. The control system adjusts the air intake volume of the tubular air intake assembly according to the temperature of the inner cavity of the motor enclosure.

2. The device for centralized heat dissipation and heat recovery of motors as described in claim 1, characterized in that: A filter device is installed between the motor enclosure and the heat utilization device.

3. The device for centralized heat dissipation and heat recovery of motors as described in claim 1, characterized in that: The tubular air inlet assembly includes several air inlet pipes, and the air inlet end of the air inlet pipe is provided with an air inlet connecting flange, which is connected to the air inlet device.

4. The device for centralized heat dissipation and heat recovery of motors as described in claim 3, characterized in that: A support frame is installed on the air inlet pipe.

5. The device for centralized heat dissipation and heat recovery of motors as described in claim 1, characterized in that: The motor enclosure includes a lower enclosure and an upper enclosure mounted on the lower enclosure.

6. The device for centralized heat dissipation and heat recovery of motors as described in claim 5, characterized in that: An extended cover is provided on the upper cover, and an extended air duct is provided on the extended cover. The extended air duct is connected to an air inlet device, and the air inlet device draws air into the extended cover through the extended air duct.

7. The device for centralized heat dissipation and heat recovery of motors as described in claim 5, characterized in that: The lower cover is equipped with a baffle plate, which guides the airflow toward the air outlet.

8. The device for centralized heat dissipation and heat recovery of motors as described in claim 1, characterized in that: The heat utilization device is equipped with a heat exchanger, and the hot air blown out of the air outlet is replaced by the heat exchanger and transferred to the energy storage device.

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