Motor cooling structure and motor device

Abstract

The utility model relates to a motor cooling structure and motor device belong to motor heat dissipation field. Its technical scheme is a kind of motor cooling structure, including motor installation site, the tail end of motor installation site is equipped with atomization spray head group and fan, the blowing direction of fan is from the tail end of motor installation site towards axle end along the axial direction, the atomization spray head group is located in the side of fan close to axle end;The axle end of motor installation site is equipped with fender, fender is perpendicular to the axial direction of motor installation site. This scheme increases atomization spray head group on the basis of traditional single air cooling, and water mist is sprayed to motor installation site, water mist diffuses to entire motor installation site with fan blowing, evaporates in motor surface and nearby area, quickly carries away motor heat, greatly improves the heat dissipation effect;Fender is set at axle end position, can block water mist, prevent water mist from entering the working equipment area connected with motor.

Description

Technical Field

[0001] This utility model relates to the field of motor heat dissipation, and in particular to a motor cooling structure and a motor device. Background Technology

[0002] Squirrel-cage three-phase asynchronous motors generate heat during operation, especially under heavy loads or when the ambient temperature is high, making heat dissipation even more crucial. If heat dissipation is not timely, the motor temperature will be too high, affecting its normal operation.

[0003] In a squirrel-cage rotor, copper bars are embedded in slots in the rotor core according to a certain pattern, and the two ends are welded together with short-circuit rings (end rings) to form a closed loop, giving the overall structure a squirrel-cage shape. The advantages of this structure are high mechanical strength and simple manufacturing process, but the disadvantage is that there is no independent heat dissipation winding or channel inside the rotor, and the heat conduction path is single. The rotor core acts as the main heat conduction medium, transferring the heat generated by the copper bars to the rotor surface, and then dissipating it through air convection or an external cooling system. The external cooling system mostly uses a fan, which is installed on the rear end cover of the motor and rotates coaxially with the rotor. It carries away the heat from the motor surface through forced convection. The air absorbs heat and is discharged when it flows through the stator windings, rotor core, and heat sink.

[0004] However, when the motor is running under heavy load or the ambient temperature is high, ordinary cooling fans cannot meet the heat dissipation requirements. Summary of the Invention

[0005] This invention addresses the problem that current fan cooling systems cannot meet the heat dissipation requirements of motors operating under heavy loads by providing a motor cooling structure.

[0006] To solve the above problems, the technical solution adopted by this utility model is a motor cooling structure, including a motor mounting position. An atomizing nozzle assembly and a fan are provided at the tail end of the motor mounting position. The fan blows air axially from the tail end of the motor mounting position towards the shaft end. The atomizing nozzle assembly is located on the side of the fan closer to the shaft end. A water baffle is provided at the shaft end of the motor mounting position, perpendicular to the axial direction of the motor mounting position. This solution adds an atomizing nozzle assembly to the traditional single air cooling system, spraying water mist into the motor mounting position. The water mist is diffused throughout the entire motor mounting position by the fan, evaporating on the motor surface and in the surrounding area, quickly carrying away the motor heat and greatly improving the heat dissipation effect. The water baffle at the shaft end can block the water mist, preventing it from entering the working equipment area connected to the motor.

[0007] As a preferred embodiment of a motor cooling structure, the atomizing nozzle assembly includes a water spray pipe that is annular and surrounds the motor mounting position circumferentially. Multiple individual atomizing nozzles are mounted on the water spray pipe, with each nozzle facing radially inwards towards the inner ring of the water spray pipe. The annular water spray pipe, in conjunction with the radial nozzles, ensures that the water mist evenly covers the heat sink fins around the motor, guaranteeing a balanced temperature across all parts of the motor.

[0008] As a preferred implementation of a motor cooling structure, it also includes a water storage tank, a water supply pipe is provided between the water storage tank and the water spray pipe, and a water pump is provided on the water supply pipe.

[0009] As a preferred implementation of a motor cooling structure, the baffle plate has a larger area than the inner ring area of ​​the spray pipe. A larger baffle plate can cover the spray diffusion range and further block the outward diffusion of water mist.

[0010] As a preferred implementation of a motor cooling structure, a water collection trough is provided below the baffle plate, and a return water pipe is provided at the bottom of the water collection trough, which is connected to the water storage tank. Unevaporated water mist condenses on the surface of the baffle plate. The water collection trough at the bottom of the baffle plate collects the condensed water and transports it back to the water storage tank for recycling, saving water resources and preventing water from flowing to other parts of the workshop, thus improving production safety.

[0011] As a preferred implementation of a motor cooling structure, it also includes an installation foundation, on which the motor mounting position is arranged. The water baffle, the water spray pipe, and the fan are all installed on the upper surface of the installation foundation. The water storage tank, the water supply pipe, and the return water pipe are all located inside the installation foundation. Integrating the water circulation system within the installation foundation saves ground space.

[0012] As a preferred implementation of the motor cooling structure, a temperature control switch is also included, which is electrically connected to the water pump. By setting the temperature control switch, water spraying is activated when the motor temperature exceeds a certain threshold, reducing system energy consumption. Simultaneously, water spraying is stopped when the motor temperature is low, effectively preventing water mist condensation on the motor surface and extending the motor's service life.

[0013] On the other hand, this utility model also provides a motor device, including a motor body and the aforementioned motor cooling structure. The motor body is installed in the motor mounting position, the atomizing nozzle assembly is located on the outer periphery of the motor body, and the output shaft of the motor body passes through the baffle plate. This motor device employs a combination of air cooling and evaporative cooling, significantly improving heat dissipation, ensuring stable motor output, and extending the motor's service life.

[0014] As a preferred embodiment of the motor device, the outer peripheral surface of the motor body is further provided with heat dissipation fins, which are arranged along the axial section of the motor body. With heat dissipation fins, water mist sprayed between the fins evaporates rapidly, further improving evaporation efficiency and thus enhancing heat dissipation.

[0015] As can be seen from the above technical solutions, the beneficial effects of this utility model are as follows: This solution adds an atomizing nozzle group to the traditional air-cooling system. The water mist evaporation can quickly remove the heat from the motor, significantly improving the heat dissipation efficiency compared to single air cooling. At the same time, the vertical baffle plate at the shaft end can prevent water mist from seeping into the working equipment area. The annular spray pipe, combined with the radial nozzles, ensures that the water mist evenly covers the heat sink fins around the motor, ensuring that the temperature of each part is balanced. The water storage tank and water pump form a closed-loop circulation system. The demineralized water can prevent nozzle clogging and motor scaling. The design of the water collection tank and return water pipe realizes water resource recycling, saving costs and avoiding water accumulation in the workshop. The integrated installation foundation embeds the water circulation system within the installation foundation, saving ground space and reducing the risk of damage to exposed pipes. The temperature control switch links the water pump for intelligent start and stop. When the temperature exceeds the threshold, water is automatically sprayed to cool down, avoiding low-temperature condensation, reducing energy consumption and extending the motor life. The motor device combines air cooling and evaporative heat dissipation. The outer heat dissipation fins further expand the heat dissipation area, accelerate water mist evaporation, ensure stable motor output, and extend service life. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0018] Figure 2 for Figure 1 A cross-sectional view along the AA direction.

[0019] Explanation of main figure symbols 00. Motor mounting position, 1. Atomizing nozzle assembly, 1-1. Water spray pipe, 1-2. Individual atomizing nozzle, 2. Fan, 3. Water baffle, 4. Water supply pipe, 5. Water pump, 6. Water collection tank, 7. Water return pipe, 8. Water storage tank, 9. Installation foundation, 10. Temperature control switch, 11. Motor body, 12. Heat dissipation fins. Detailed Implementation

[0020] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0021] like Figure 1 As shown, a motor cooling structure includes a mounting base 9, which is the installation position for the motor and the equipment driven by the motor in a workshop or site. In this embodiment, the mounting base 9 is the ground. A motor mounting position 00 is provided on the mounting base 9, and the motor is installed in the motor mounting position 00. Depending on the orientation of the motor after installation, the motor mounting position 00 has a shaft end and a tail end. The shaft end is the end where the motor shaft is located, and the tail end is the end where the tail of the motor is located.

[0022] On the mounting base 9, an atomizing nozzle assembly 1 and a fan 2 are provided at the tail end of the motor mounting position 00. The fan 2 blows air axially from the tail end of the motor mounting position 00 toward the shaft end. The atomizing nozzle assembly 1 is located on the side of the fan 2 closer to the shaft end. Figure 2 As shown, the atomizing nozzle assembly includes a water spray pipe 1-1, which is annular and surrounds the motor mounting position 00 in the circumferential direction. Multiple atomizing nozzle units 1-2 are installed on the water spray pipe 1-1, and the atomizing nozzle units 1-2 are radially oriented towards the inner ring of the water spray pipe 1-1.

[0023] The motor mounting position 00 has a baffle plate 3 at its shaft end. The baffle plate is perpendicular to the axial direction of the motor mounting position 00, and the width of the baffle plate 3 is larger than the inner area of ​​the spray pipe 1-1.

[0024] It also includes a water storage tank 8, and a water supply pipe 4 is provided between the water storage tank 8 and the spray pipe 1-1. In this embodiment, the water storage tank 8 and the water supply pipe 4 are located underground on the installation foundation 9 (the pipes can be excavated and laid in advance). A water pump 5 is provided on the water supply pipe 4 to supply water to the atomizing nozzle group 1. In addition, this cooling structure also includes a temperature control switch 10 that can be set on the motor. The temperature control switch 10 is electrically connected to the water pump 5. When the motor temperature exceeds a certain value, the water pump is started to spray and cool the air. For example, the temperature control switch 10 can be in the form of a temperature relay, which firmly combines two metals or alloys with significantly different coefficients of thermal expansion to form a disc-shaped bimetallic strip. When the temperature rises to a certain value, the bimetallic strip will bend upward due to the expansion and elongation of the lower metal and the smaller expansion and elongation of the upper metal. When it bends to a certain extent, it can drive the electrical contacts to realize the function of connecting or disconnecting the load circuit.

[0025] Meanwhile, a water collection trough 6 is provided below the water baffle 3, and a return water pipe 7 is provided at the bottom of the water collection trough 6. The return water pipe 7 is located in the installation foundation 9 and is connected to the water storage tank 8.

[0026] Example 2 This embodiment further provides a motor device, including a motor body 11 (i.e., the motor in Embodiment 1) and a motor cooling structure provided in Embodiment 1. The motor body 11 is installed in the motor mounting position 00, the atomizing nozzle group 1 is located on the outer periphery of the motor body 11, and the output shaft of the motor body 11 passes through the baffle plate 3. The outer peripheral surface of the motor body 11 is also provided with heat dissipation fins 12, which are arranged along the axial section of the motor body 11.

[0027] The working process of this utility model is as follows: When the temperature of the motor body 11 is low, it is cooled by air by the fan 2. When the temperature control switch 10 detects that the temperature of the motor body 11 is higher than the set value, the water pump 5 is started. The water pump 5 draws water from the water storage tank 8 and sprays it from the atomizing nozzles 1-2 to the area between the motor surface and the heat dissipation fins 12. Then, the water mist is rapidly diffused along the axis of the motor body 11 towards the shaft end under the airflow of the fan 2. The water mist is evaporated in the air or attached to the heat dissipation fins 12, thereby quickly carrying away the heat from the surface of the motor body 11 and its surroundings, achieving cooling. The unevaporated water mist is intercepted by the baffle plate 3, collected in the water collection tank 6, and flows back to the water storage tank 8. When the water in the water storage tank is insufficient, water can be added to the water storage tank through the water collection tank 6.

[0028] As can be seen from the above embodiments, the advantages of this utility model are as follows: This solution adds an atomizing nozzle group to the traditional air-cooling system. The water mist evaporation can quickly remove the heat from the motor, significantly improving the heat dissipation efficiency compared to single air cooling. At the same time, the vertical baffle plate at the shaft end can prevent water mist from seeping into the working equipment area. The annular spray pipe, together with the radial nozzles, ensures that the water mist evenly covers the heat sink fins around the motor, ensuring that the temperature of each part is balanced. The water storage tank and water pump form a closed circulation system. The demineralized water can prevent nozzle clogging and motor scaling. The design of the water collection tank and return water pipe realizes water resource recycling, saving costs and avoiding water accumulation in the workshop. The integrated installation foundation embeds the water circulation system within the installation foundation, saving ground space and reducing the risk of damage to exposed pipes. The temperature control switch links the water pump for intelligent start and stop. When the temperature exceeds the threshold, water is automatically sprayed to cool down, avoiding low-temperature condensation, reducing energy consumption and extending the motor life. The motor device combines air cooling and evaporative heat dissipation. The outer heat dissipation fins further expand the heat dissipation area, accelerate water mist evaporation, ensure stable motor output, and extend service life.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A motor cooling structure, comprising a motor mounting position (00), characterized in that, The motor mounting position (00) is provided with an atomizing nozzle assembly (1) and a fan (2) at its tail end. The fan (2) blows air axially from the tail end of the motor mounting position (00) toward the shaft end. The atomizing nozzle assembly (1) is located on the side of the fan (2) near the shaft end. The shaft end of the motor mounting position (00) is provided with a baffle plate (3), which is perpendicular to the axial direction of the motor mounting position (00).

2. The motor cooling structure according to claim 1, characterized in that, The atomizing nozzle assembly (1) includes a water spray pipe (1-1), which is annular and surrounds the motor mounting position (00) in the circumferential direction. Multiple atomizing nozzle units (1-2) are installed on the water spray pipe (1-1), and the atomizing nozzle units (1-2) are radially oriented towards the inside of the ring of the water spray pipe (1-1).

3. The motor cooling structure according to claim 2, characterized in that, It also includes a water storage tank (8), a water supply pipe (4) is provided between the water storage tank and the water spray pipe, and a water pump (5) is provided on the water supply pipe (4).

4. The motor cooling structure according to claim 2, characterized in that, The area of ​​the baffle plate (3) is larger than the inner area of ​​the spray pipe (1-1).

5. The motor cooling structure according to claim 3, characterized in that, A water collection trough (6) is provided below the baffle plate (3), and a return water pipe (7) is provided at the bottom of the water collection trough (6), which is connected to the water storage tank (8).

6. The motor cooling structure according to claim 5, characterized in that, It also includes an installation base (9), the motor mounting position (00) is arranged on the installation base (9), the baffle plate (3), the spray pipe (1-1) and the fan (2) are all installed on the upper surface of the installation base (9), and the water storage tank (8), the water supply pipe (4) and the return water pipe (7) are all opened inside the installation base (9).

7. The motor cooling structure according to claim 3, characterized in that, It also includes a temperature control switch (10), which is electrically connected to the water pump (5).

8. A motor device, characterized in that, Includes a motor body (11) and a motor cooling structure as described in any one of claims 1-7, wherein the motor body (11) is installed in the motor mounting position (00), the atomizing nozzle group (1) is located on the outer periphery of the motor body (11), and the output shaft of the motor body (11) passes through the baffle plate (3).

9. The motor device according to claim 8, characterized in that, The outer peripheral surface of the motor body (11) is also provided with heat dissipation fins (12).

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