Protective top cover suitable for motor having mixed-flow ventilation structure

Abstract

Provided in the present invention is a protective top cover suitable for a motor having a mixed-flow ventilation structure, comprising a cover body and a bottom plate, the cover body being internally divided into an air inlet chamber and an air outlet chamber by means of a main partition plate; a flow guide partition plate is provided in the air inlet chamber, and the flow guide partition plate divides the air inlet chamber into a front air inlet space, an upper air inlet space and a rear air inlet space, a side plate of the front air inlet space being provided with louvers configured for external air intake; a steel plate mesh and an oblique baffle are mounted at an air outlet of the air outlet chamber, the oblique baffle obliquely extending upward from below the air outlet to the inner side of the air outlet chamber. In the present invention, the air inlet chamber using the louvers and a zigzag-shaped air inlet space structure, and the air outlet of the air outlet chamber using the oblique baffle and the steel plate mesh can withstand splashed water in different directions, and prevent high-speed air and airborne particles from directly flowing to internal air paths of live parts of motors, thus achieving protection rating of IP24 while reducing mechanical noises caused by large fans of motors having mixed-flow ventilation structures.

Description

Protective top cover suitable for motors with mixed-flow ventilation structure Technical Field

[0001] This invention relates to the field of motor technology, specifically to a protective top cover suitable for motors with mixed-flow ventilation structures. Background Technology

[0002] With the advancement of the national dual-carbon policy, the requirements for motor power density are constantly increasing. Adopting a mixed-flow structure improves ventilation and heat dissipation efficiency, thereby increasing product power density. For Y-series motors, since the mixed-flow ventilation structure uses a single large fan, a protective top cover is necessary to reduce motor noise. However, current protective top covers offer weak splash protection. In outdoor environments, high-speed air, airborne particles, and splashing water directly enter the internal airflow path of the motor's energized parts, reducing the motor's lifespan.

[0003] Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a protective top cover suitable for motors with mixed-flow ventilation structures.

[0005] To achieve the above objectives, the technical solution adopted by the present invention to solve its technical problem is: a protective top cover suitable for a mixed-flow ventilation structure motor, comprising a cover body and a bottom plate, wherein the bottom of the cover body is fixedly connected to the bottom plate, and the cover body is divided into an air inlet chamber and an air outlet chamber by a main partition.

[0006] The air inlet chamber is equipped with a baffle plate, which divides the air inlet chamber into a front air inlet space, an upper air inlet space, and a rear air inlet space. The front air inlet space is located on the side of the baffle plate closer to the main baffle plate, and the rear air inlet space is located on the side of the baffle plate away from the main baffle plate. The upper air inlet space is located above the front air inlet space and the rear air inlet space, and connects the front air inlet space and the rear air inlet space. The side plate of the front air inlet space is equipped with louvers for external air intake, and the bottom plate at the lower end of the rear air inlet space is equipped with a through-hole for introducing air into the tail end of the motor.

[0007] The bottom plate at the lower end of the air outlet chamber is provided with a through opening for the air from the front end of the motor to enter the air outlet chamber. An air outlet is opened on the wall of the air outlet chamber opposite to the main partition. A steel mesh is installed at the air outlet. An inclined baffle is provided below the air outlet of the air outlet chamber. The inclined baffle extends obliquely upward from below the air outlet toward the inner side of the air outlet chamber.

[0008] In this invention, the air inlet chamber adopts louvers and a tortuous air inlet space structure, and the air outlet of the air outlet chamber adopts an inclined baffle and a steel mesh, which can withstand water splashing from different directions and prevent high-speed air and airborne particles from directly entering the internal air path of the motor's live parts, achieving an IP24 protection level; at the same time, it reduces the mechanical noise brought by the large fan of the motor in the mixed flow ventilation structure.

[0009] Furthermore, the flow guide baffle includes a vertical part, a horizontal extension part, and an upper bend part. The lower end of the vertical part is fixedly connected to the base plate. The horizontal extension part extends horizontally forward from the top of the vertical part and is located above the louver in the height direction. The upper bend part bends upward from the front end of the horizontal extension part.

[0010] The preferred design described above results in a simple and strong baffle structure that allows air to circulate within the intake chamber, reducing the amount of rain, snow, and suspended particles entering the motor.

[0011] Furthermore, sound-absorbing cotton is attached to the inner wall of the air outlet chamber.

[0012] By adopting the above-mentioned preferred solution, the ventilation noise of the motor is further reduced.

[0013] Furthermore, louvers are installed on both the left and right side panels of the forward airflow space.

[0014] By adopting the above-mentioned preferred solution, the air intake volume is increased, and the heat dissipation efficiency of the motor is improved.

[0015] Furthermore, the angle between the inclined baffle and the vertical direction is 20-30°, and the length of the inclined baffle is greater than 1 / 2 of the opening length of the air outlet in the height direction.

[0016] By adopting the above-mentioned preferred scheme, the blocking effect of rain, snow and suspended particles at the air outlet is improved.

[0017] Furthermore, multiple lifting rings are fixedly connected to the outer wall of the cover.

[0018] The above-mentioned preferred scheme facilitates the hoisting of the cover and improves installation convenience.

[0019] Furthermore, a connecting plate is provided on the bottom plate located on the outside of the cover, and the connecting plate is fixedly connected to the motor via a locking device.

[0020] The preferred design described above facilitates the installation of the cover and the motor. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 is a cross-sectional view of one embodiment of the present invention.

[0023] Figure 2 is a front view of one embodiment of the present invention.

[0024] Figure 3 is a schematic diagram of the airflow path when the protective top cover of the present invention is installed on the motor.

[0025] Figure 4 is a cross-sectional view of another embodiment of the present invention.

[0026] The names of the corresponding components represented by the numbers and letters in the diagram are as follows: 10-Cover; 20-Base plate; 30-Main partition; 40-Air inlet chamber; 41-Guide partition; 411-Vertical section; 412-Horizontal extension section; 413-Upper bend section; 42-Front air space; 43-Upper air inlet space; 44-Rear air inlet space; 45-Louvre; 50-Air outlet chamber; 51-Air outlet; 52-Steel mesh; 53-Slanted baffle; 54-Sound absorption cotton; 61-Hanging ring; 62-Connecting plate; 71-First electric push rod; 72-Second electric push rod. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] As shown in Figures 1-3, one embodiment of the present invention is: a protective top cover suitable for a mixed-flow ventilation structure motor, including a cover body 10 and a bottom plate 20, the bottom of the cover body 10 is fixedly connected to the bottom plate 20, and the cover body 10 is divided into an air inlet chamber 40 and an air outlet chamber 50 by a main partition 30.

[0029] The air inlet chamber 40 is provided with a baffle 41, which divides the air inlet chamber 40 into a front air inlet space 42, an upper air inlet space 43, and a rear air inlet space 44. The front air inlet space 42 is located on the side of the baffle 41 closer to the main baffle 30, and the rear air inlet space 44 is located on the side of the baffle 41 away from the main baffle. The upper air inlet space 43 is located above the front air inlet space 42 and the rear air inlet space 44 and connects the front air inlet space 42 and the rear air inlet space 44. The side plate of the front air inlet space 42 is provided with a louver 45 for external air intake, and the bottom plate at the lower end of the rear air inlet space 44 is provided with a through-hole for introducing air into the tail end of the motor.

[0030] The bottom plate at the lower end of the air outlet chamber 50 is provided with a through opening for the air from the front end of the motor to enter the air outlet chamber 50. An air outlet 51 is opened on the wall of the air outlet chamber 50 opposite to the main partition. A steel mesh 52 is installed at the air outlet 51. An inclined baffle 53 is provided below the air outlet 51 of the air outlet chamber 50. The inclined baffle 53 extends obliquely upward from below the air outlet 51 towards the inner side of the air outlet chamber.

[0031] The beneficial effects of adopting the above technical solution are: the air inlet chamber adopts louvers and a tortuous air inlet space structure, and the air outlet of the air outlet chamber adopts an inclined baffle and a steel mesh, which can withstand water splashing from different directions and prevent high-speed air and airborne particles from directly entering the internal air path of the motor's live parts, achieving an IP24 protection level; at the same time, it reduces the mechanical noise brought by the large fan of the motor in the mixed flow ventilation structure.

[0032] As shown in Figure 1, in some embodiments of the present invention, the flow guide baffle 41 includes a vertical portion 411, a horizontal extension portion 412, and an upper bend portion 413. The lower end of the vertical portion 411 is fixedly connected to the base plate 20. The horizontal extension portion 412 extends horizontally forward from the top of the vertical portion 411 and is located above the louver 45 in the height direction. The upper bend portion 413 bends upward from the front end of the horizontal extension portion 412. The beneficial effect of adopting the above technical solution is that the flow guide baffle includes a vertical portion, a horizontal extension portion, and an upper bend portion. The lower end of the vertical portion is fixedly connected to the base plate. The horizontal extension portion extends horizontally forward from the top of the vertical portion and is located above the louver in the height direction. The upper bend portion bends upward from the front end of the horizontal extension portion.

[0033] As shown in Figure 1, in some embodiments of the present invention, sound-absorbing cotton 54 is attached to the inner wall of the air outlet chamber 50. The beneficial effect of adopting the above technical solution is that it further reduces the ventilation noise of the motor.

[0034] In other embodiments of the present invention, louvers 45 are installed on both the left and right sides of the forward airflow space 42. The beneficial effect of adopting the above technical solution is that louvers are installed on both the left and right sides of the forward airflow space.

[0035] As shown in Figure 1, in some other embodiments of the present invention, the angle between the inclined baffle 53 and the vertical direction is 20-30°, and the length of the inclined baffle 53 is greater than half the opening length of the air outlet 51 in the height direction. The beneficial effect of adopting the above technical solution is to improve the blocking effect on rain, snow and suspended particles at the air outlet.

[0036] As shown in Figure 2, in some embodiments of the present invention, a plurality of lifting rings 61 are fixedly connected to the outer wall of the cover 10. The beneficial effect of adopting the above technical solution is that it facilitates the hoisting of the cover and improves the ease of installation.

[0037] As shown in Figure 2, in some embodiments of the present invention, a connecting plate 62 is provided on the bottom plate located outside the cover 10, and the connecting plate 62 is fixedly connected to the top of the motor via a locking member. The beneficial effect of adopting the above technical solution is that it facilitates the assembly and installation of the cover and the motor.

[0038] As shown in Figure 4, in some embodiments of the present invention, the connection between the horizontal extension 412 and the vertical portion 411 of the flow guide baffle 41 is hinged, and a first electric push rod 71 is also included. The top end of the telescopic rod of the first electric push rod 71 is hinged to the upper bent portion of the flow guide baffle, and the tail end of the cylinder seat of the first electric push rod 71 is hinged to the top wall of the cover. The first electric push rod 71 is used to drive the horizontal extension 412 to adjust upward within an angle range of 0-20° with the horizontal plane. A second electric push rod 72 is provided in the air outlet chamber. The top end of the telescopic rod of the second electric push rod 72 is hinged to the inclined baffle 53, and the tail end of the cylinder seat of the second electric push rod 72 is hinged to the bracket of the air outlet chamber. The second electric push rod 72 is used to drive the inclined baffle 53 to adjust within an angle range of 20-30° with the vertical direction. It also includes a temperature sensor, a humidity sensor, and a controller installed outside the enclosure. The controller is signal-connected to the temperature sensor, humidity sensor, first electric actuator, and second electric actuator. The controller receives the external temperature and humidity signals detected by the temperature and humidity sensors, processes them, and issues command signals to control the operation of the first and second electric actuators. The lower the temperature value collected by the temperature sensor, the larger the angle between the horizontal extension of the flow guide baffle controlled by the first electric actuator and the horizontal plane, and the smaller the angle between the inclined baffle controlled by the second electric actuator and the vertical direction. The higher the humidity value collected by the humidity sensor, the larger the angle between the horizontal extension of the flow guide baffle controlled by the first electric actuator and the horizontal plane, and the smaller the angle between the inclined baffle controlled by the second electric actuator and the vertical direction. Different weighting coefficients can be set for the influence of temperature and humidity on the opening angle of the flow guide baffle and the inclined baffle to balance the blocking effect of external rain, snow, and suspended particles with the heat dissipation efficiency of the motor.

[0039] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A protective top cover suitable for a mixed flow ventilating structure motor, characterized in that, The cover body is fixedly connected with the bottom plate at the bottom, and is divided into an air inlet chamber and an air outlet chamber by a main partition plate in the cover body; A flow guide partition plate is arranged in the air inlet chamber, and the flow guide partition plate divides the air inlet chamber into a front air inlet space, an upper air inlet space and a rear air inlet space. The front air inlet space is located on one side of the flow guide partition plate close to the main partition plate, the rear air inlet space is located on the other side of the flow guide partition plate away from the main partition plate, and the upper air inlet space is located above the front air inlet space and the rear air inlet space and communicates the front air inlet space and the rear air inlet space.

2. A protective top housing for a mixed flow ventilating construction machine according to claim 1, characterized in that A louver is arranged on the side plate of the front air inlet space for external air inlet, and a through hole is arranged on the bottom plate at the lower end of the rear air inlet space for passing the air inlet into the tail end of the motor.

3. A protective top housing for a mixed flow ventilating construction machine according to claim 2, characterized in that A through hole is arranged on the bottom plate at the lower end of the air outlet chamber for passing the air outlet of the front end of the motor into the air outlet chamber.

4. A protective top housing for a mixed flow ventilating construction machine according to claim 1, characterized in that A steel mesh is arranged on the wall opposite to the main partition plate of the air outlet chamber, and an inclined baffle is arranged below the air outlet of the air outlet chamber.

5. A protective top housing for a mixed flow ventilating construction machine according to claim 4, characterized in that The flow guide partition plate comprises a vertical part, a horizontal extension part and an upper bending part.

6. A protective top housing for a mixed flow ventilating construction machine according to claim 1, characterized in that The left side plate and the right side plate of the front air inlet space are both provided with a louver.

7. A protective top housing for a mixed flow ventilating construction machine according to claim 6, characterized in that The inner wall of the air outlet chamber is attached with sound-absorbing cotton.

8. A protective top housing for a mixed flow ventilating construction machine according to claim 2, characterized in that The angle between the inclined baffle and the vertical direction is 20-30°, and the length of the inclined baffle is greater than 1 / 2 of the opening length of the air outlet in the height direction.

9. A protective top housing for a mixed flow ventilating construction machine according to claim 8, characterized in that A plurality of lifting rings are fixedly connected to the outer wall of the cover body. A connecting plate is arranged on the bottom plate outside the cover body, and the connecting plate is fixedly connected with the motor through a locking piece. The connection between the horizontal extension part and the vertical part of the flow guide partition plate is hinged, and a first electric push rod is further arranged. The top end of the telescopic rod of the second electric push rod is hinged with the inclined baffle, and the tail part of the cylinder base of the second electric push rod is hinged to the support of the air outlet chamber. The second electric push rod is used to drive the inclined baffle to adjust within an angle range of 20-30° with the vertical direction.

10. A protective top housing for a mixed flow ventilating construction machine according to claim 9, characterized in that It also includes temperature sensor, humidity sensor and controller arranged outside the cover, the controller is signal connected with temperature sensor, humidity sensor, first electric push rod and second electric push rod, the controller receives the outside temperature and humidity signal detected by the temperature sensor and humidity sensor, and sends the instruction signal for controlling the action of the first electric push rod and second electric push rod after processing;The temperature value collected by the temperature sensor is lower, the angle between the horizontal extension of the first electric push rod controlled guide baffle and the horizontal plane is larger, and the angle between the second electric push rod controlled inclined baffle and the vertical direction is smaller;The humidity value collected by the humidity sensor is larger, the angle between the horizontal extension of the first electric push rod controlled guide baffle and the horizontal plane is larger, and the angle between the second electric push rod controlled inclined baffle and the vertical direction is smaller.

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