A vertically mounted waterproof and easy-to-drain structure motor

Abstract

The present invention discloses a vertically mounted motor with waterproof and easy-to-drain structure, and relates to the field of motors. The traditional fan motor protection structure is easy to be infiltrated with water. If the water is not discharged in time after infiltration, it is easy to cause the stator to burn, which poses a safety hazard. The present invention is a vertically mounted motor, including a front cover, a rear cover, a casing, and a stator and a rotor located in the casing. The shaft extension end of the rotating shaft extends upward from the front cover, and a water-slinging ring is then provided; the casing and the front and rear rear covers are respectively connected by inner and outer stoppers, and the stopper assembly surfaces are coated with sealant; the lead-out wire on the stator passes through the locking nut on the casing and is led out of the casing; the rear cover is located at the bottom of the motor, and the rear cover is provided with a drip hole connected inside and outside, and a labyrinth drip hole plug with interference fit is provided therein. It can effectively prevent external rainwater from entering the interior of the motor, and can effectively discharge the condensed water inside the motor through the labyrinth drip hole plug, thereby improving the protection performance of the motor.

Description

Technical Field

[0001] The invention relates to the field of motors, and in particular to a vertically mounted waterproof and easy-to-drain motor. Background Art

[0002] With the emergence of large-scale shopping malls and high-rise buildings, more stringent requirements are placed on the safety and reliability of ventilation and smoke exhaust systems. Especially in crowded places, once a fire occurs, a reliable ventilation and smoke exhaust system is essential for the safe evacuation of personnel. The reliability of the motor is the key guarantee for the effective operation of the ventilation and smoke exhaust system. The traditional fan motor protection structure is prone to water ingress. If the water is not released in time after the water ingress, it is easy to cause the stator to burn, posing a safety hazard. Summary of the invention

[0003] The technical problem to be solved and the technical task proposed by the present invention are to improve and perfect the existing technical solutions, and provide a vertically mounted waterproof and easy-to-drain structure motor, so as to improve the protection performance of the motor. To this end, the present invention adopts the following technical solutions.

[0004] A vertically mounted motor with waterproof and easy-to-drain structure comprises a front cover, a rear cover, a casing, and a stator and a rotor located in the casing, wherein the casing is located between the front cover and the rear cover and is sealed with the front cover and the rear cover, the rotor shaft extends out of the front cover to form an extension end, the lead wire on the stator passes through a waterproof seal on the casing and is led out of the casing, the motor is a vertically mounted motor, the extension end of the shaft extends upward, a water-spinning ring is provided at the extension end, the water-spinning ring and the extension end of the shaft are interference fit, the middle area of ​​the front cover matching the shaft is an upward annular protrusion, the water-spinning ring covers the outside of the annular protrusion and there is a gap between the annular protrusion and the end face of the front cover; the rear cover is located at the bottom of the motor, the rear cover is provided with a drip hole connected inside and outside, a labyrinth drip hole plug with interference fit is provided therein.

[0005] By setting a water-spinning ring at the shaft extension end of the vertically mounted motor, the centrifugal force of the motor operation can effectively protect rainwater outside the motor from entering the inside of the motor, thereby improving the waterproof effect of the motor; when condensed water is generated inside the motor, under the action of the positive pressure of the motor and gravity, it can be automatically and timely drained from the water outlet of the maze drip hole plug at the tail of the motor, without the need for manual drainage, saving manual operation time and ensuring the timeliness of drainage, thereby ensuring the reliability of the motor and improving the protection performance of the motor by controlling water inlet and drainage.

[0006] As a preferred technical means: the front end cover is provided with an inner stopper, and the front end cover and the housing are matched with the inner stopper. By arranging the front end cover located above on the outer shell of the housing located below, the waterproof performance of this part can be effectively improved to prevent external rainwater from entering the motor through the joint.

[0007] As a preferred technical means: the rear end cover is provided with an external stopper, and the rear end cover and the housing are matched with the external stopper. By arranging the housing located above on the outer shell of the rear end cover located below, the waterproof performance of the connection part can be effectively improved to prevent external rainwater from entering the motor through the joint.

[0008] As a preferred technical means: the stopper mating contact surfaces between the housing and the front cover, and between the housing and the rear cover are coated with sealant. By coating the stopper mating surfaces with sealant, the sealing effect is good, which can better prevent water mist from entering the motor, and better improve the protection effect.

[0009] As a preferred technical means: the labyrinth drip hole plug includes a plug post and a labyrinth groove, the plug post is interference fit with the drip hole, a plurality of vertical water flow grooves are provided on the side of the plug post and connected with the labyrinth groove, and a plurality of water outlets are provided on the side of the labyrinth groove. The accumulated water inside the motor can be effectively discharged through the water flow groove, the labyrinth groove and the water outlet in sequence, so as to discharge the accumulated water inside the motor.

[0010] As a preferred technical means: an island-type water baffle is provided on the inner side of each water outlet, the width of the island-type water baffle is greater than the water outlet, and the height is flush with the top of the labyrinth groove. The island-type water baffle can prevent external rainwater from entering the labyrinth groove laterally, effectively preventing external rainwater from entering the motor.

[0011] As a preferred technical means: the labyrinth drip hole plug is made of high temperature resistant silicone rubber material, which can effectively adapt to high environmental temperatures and improve the adaptability of the motor to temperature in harsh environments.

[0012] As a preferred technical means: the waterproof seal is a locking screw sleeve, and the lead wire of the stator is led out of the casing through the locking screw sleeve. The locking screw sleeve can lock and seal the lead wire to improve the waterproof sealing effect.

[0013] As a preferred technical means: the shaft extension end of the rotating shaft is provided with a fan positioning connection structure, and the upper end of the fan positioning connection structure is provided with a threaded ball cap. The ball cap can realize the locking and fixing of the fan after connection, and through its spherical cap, the dripping rainwater will be thrown away by centrifugal force after being guided to the side, which can effectively improve the waterproof performance of the fan connection part, prevent the connection part from rusting and other problems, and provide guarantee for the normal operation of the fan.

[0014] Beneficial effects: The water-spinning ring effectively protects rainwater outside the motor from entering the inside of the motor through the centrifugal force of the motor; the front cover adopts an external stopper structure, and the rear cover adopts an internal stopper structure. The interface mating surface is coated with sealant, and the lead-out wire is locked and sealed by a locking nut, which effectively improves the waterproof performance; when condensed water is generated inside the motor, under the action of the positive pressure of the motor and gravity, it can automatically and timely drain water from the outlet of the maze drip hole plug at the tail of the motor, and external rainwater cannot enter the interior through the baffle, so there is no need for manual time to discharge, which saves manual operation time and ensures the timeliness of drainage, effectively improving the protection performance, improving the safety of the ventilation and smoke exhaust system, and ensuring the reliability of system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a half-section structural schematic diagram of the present invention.

[0016] Figure 2 It is a schematic diagram of the structure of the labyrinth drip hole plug of the present invention.

[0017] In the figure: 1-front cover; 2-rear cover; 3-casing; 4-stator; 5-rotor; 6-rotating shaft; 7-water-spinning ring; 8-labyrinth drip hole plug; 9-locking nut; 10-ball cap; 101-annular protrusion; 102-inner stopper; 201-outer stopper; 601-shaft extension end; 801-plug; 802-labyrinth groove; 803-water flow groove; 804-water outlet; 805-water baffle. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0019] like Figure 1 As shown, a vertically mounted waterproof and easy-to-drain structure motor comprises a front cover 1, a rear cover 2, a casing 3, and a stator 4 and a rotor 5 located in the casing 3. The casing 3 is located between the front cover 1 and the rear cover 2 and is sealed with the front cover 1 and the rear cover 2. The rotating shaft 6 of the rotor 5 extends out of the front cover 1 to form an axial extension end 601. The lead wire on the stator 4 passes through the waterproof seal on the casing 3 and is led out of the casing 3. The motor is a vertically mounted motor. The axial extension end 601 of the rotating shaft 6 extends upward. The axial extension end 601 is provided with a water-spinning ring 7. The water-spinning ring 7 and the axial extension end 601 of the rotating shaft 6 are interference fit. The middle area of ​​the front cover 1 that matches the rotating shaft 6 is an upward annular protrusion 101. The water-spinning ring 7 covers the outer side of the annular protrusion 101 and has a gap with the annular protrusion 101 and the end face of the front cover 1; the rear cover 2 is located at the bottom of the motor. The rear cover 2 is provided with a drip hole that is connected inside and outside, and a labyrinth drip hole plug 8 with interference fit is provided therein.

[0020] In order to prevent external rainwater from entering the motor from the connection between the front cover 1 and the housing 3, the front cover 1 is provided with an inner stopper 102, and the front cover 1 and the housing 3 are matched with the inner stopper 102. By arranging the front cover 1 located above on the outer shell of the housing 3 located below, the waterproof performance of this part can be effectively improved, preventing external rainwater from entering the motor through the joint.

[0021] In order to prevent external rainwater from entering the motor from the connection between the rear cover 2 and the housing 3, the rear cover 2 is provided with an external stopper 201, and the rear cover 2 and the housing 3 are matched with the external stopper 201. By arranging the housing 3 located above on the outer shell of the rear cover 2 located below, the waterproof performance of the connection part can be effectively improved, preventing external rainwater from entering the motor through the joint.

[0022] In order to better prevent rainwater from entering the motor through the stopper joint, the stopper mating contact surfaces between the housing 3 and the front cover 1 and between the housing 3 and the rear cover 2 are coated with sealant. By applying sealant on the stopper mating surfaces, the sealing effect is good, which can better prevent water mist from entering the motor and better improve the protection effect.

[0023] In order to discharge the water inside the motor, Figure 2 As shown, the labyrinth drip hole plug 8 includes a plug column 801 and a labyrinth groove 802. The plug column 801 is interference fit with the drip hole. Four vertical water flow grooves 803 are provided on the side of the plug column 801 and communicate with the labyrinth groove 802. Three water outlets 804 are provided on the side of the labyrinth groove 802. The accumulated water inside the motor can be effectively discharged through the water flow grooves 803, the labyrinth groove 802 and the water outlets 804 in sequence, so as to discharge the accumulated water inside the motor.

[0024] In order to prevent external rainwater from entering the motor through the water outlet 804, Figure 2 As shown, an island-type water baffle 805 is provided on the inner side of each water outlet 804, and the width of the island-type water baffle 805 is greater than the water outlet 804, and the height is flush with the top of the labyrinth groove 802. The island-type water baffle 805 can prevent external rainwater from entering the labyrinth groove 802 laterally, and effectively prevent external rainwater from entering the motor.

[0025] In order to adapt to the high temperature environment, the labyrinth drip hole plug 8 is made of high temperature resistant silicone rubber material, which can effectively adapt to the high temperature environment and improve the adaptability of the motor to temperature in harsh environments.

[0026] In order to achieve a waterproof sealing effect at the lead-out position, the waterproof sealing member is a locking screw sleeve 9, and the lead-out wire of the stator 4 is led out of the casing 3 through the locking screw sleeve 9. The locking screw sleeve 9 realizes a locking and sealing effect on the lead-out wire to achieve a waterproof sealing effect.

[0027] In order to improve the waterproof performance of the fan connection part, the shaft extension end 601 of the rotating shaft 6 is provided with a fan positioning connection structure 602, and the upper end of the fan positioning connection structure 602 is provided with a threaded ball cap 10. The ball cap 10 can realize the locking and fixing of the fan after connection, and through its spherical cap, the dripping rainwater will be thrown away by centrifugal force after being guided to the side, which can effectively improve the waterproof performance of the fan connection part, prevent the connection part from rusting and other problems, and provide guarantee for the normal operation of the fan.

[0028] When the motor is running, external rainwater drips from top to bottom, and when it touches the ball cap 10 and the water-slinging ring 7, it is thrown out under the action of centrifugal force. The raindrops on the side cannot enter the interior from the stop mating surface due to the stop structure and sealant coating between the casing 3 and the front cover 1 and the rear cover 2. The lead-out line position is sealed and locked by the locking nut, which effectively improves the waterproof effect. When condensed water is generated inside the motor, under the action of the positive pressure of the motor and gravity, it can be automatically and timely drained from the water outlet 804 of the labyrinth drip hole plug 8 at the tail of the motor. There is no need for manual discharge, which saves time for manual operation and ensures the timeliness of drainage, thereby ensuring the reliability of the motor and improving the protection performance of the motor by controlling water inlet and drainage.

[0029] In this example, two labyrinth drip hole plugs 8 are provided on the rear end cover, symmetrically distributed on both sides of the center of the rear end cover 2.

[0030] above Figure 1-2 The vertically mounted waterproof and easy-to-drain structure motor shown is a specific embodiment of the present invention, which has embodied the essential characteristics and progress of the present invention. According to actual use needs and under the guidance of the present invention, equivalent modifications in shape, structure, etc. can be made to it, which are all within the protection scope of this scheme.

Claims

1. A vertically mounted waterproof and easy-to-drain structure motor, comprising a front cover (1), a rear cover (2), a housing (3), and a stator (4) and a rotor (5) located in the housing (3), wherein the housing (3) is located between the front cover (1) and the rear cover (2) and is sealed with the front cover (1) and the rear cover (2), a rotating shaft (6) of the rotor (5) extends out of the front cover (1) to form an extended shaft end (601), and a lead wire on the stator (4) passes through a waterproof seal on the housing (3) and is led out of the housing (3), characterized in that: The motor is a vertically mounted motor. The shaft extension end (601) of the rotating shaft (6) extends upward. The shaft extension end (601) is provided with a water-spinning ring (7). The water-spinning ring (7) and the shaft extension end (601) of the rotating shaft (6) are interference-fitted. The middle of the front end cover (1) and the matching area with the rotating shaft (6) are an upward annular protrusion (101). The water-spinning ring (7) covers the outside of the annular protrusion (101) and has a gap with the annular protrusion (101) and the end surface of the front end cover (1). The rear end cover (2) is located at the bottom of the motor. The rear end cover (2) is provided with a drip hole that is connected inside and outside, and a labyrinth drip hole plug (8) with an interference fit is provided therein. The labyrinth drip hole plug (8) comprises a plug post (801) and a labyrinth groove (802); the plug post (801) is interference fit with the drip hole; a plurality of vertical water flow grooves (803) are provided on the side of the plug post (801) and are connected to the labyrinth groove (802); a plurality of water outlets (804) are provided on the side of the labyrinth groove (802); An island-shaped water retaining plate (805) is provided on the inner side of each water outlet (804); the width of the island-shaped water retaining plate (805) is greater than the water outlet (804), and the height is flush with the top of the labyrinth groove (802).

2. A vertically mounted waterproof and easy-drainage structure motor according to claim 1, characterized in that: The front end cover (1) is provided with an inner stopper (102), and the inner stopper (102) fits between the front end cover (1) and the housing (3).

3. A vertically mounted waterproof and easy-drainage structure motor according to claim 2, characterized in that: The rear end cover (2) is provided with an external stopper (201), and the rear end cover (2) and the housing (3) are matched with each other via the external stopper (201).

4. A vertically mounted waterproof and easy-drainage structure motor according to claim 3, characterized in that: The stopper mating contact surfaces between the housing (3) and the front cover (1), and between the housing (3) and the rear cover (2) are coated with sealant.

5. A vertically mounted waterproof and easy-drainage structure motor according to claim 4, characterized in that: The labyrinth drip hole plug (8) is made of high temperature resistant silicone rubber material.

6. The vertically mounted waterproof and easy-drainage structure motor according to claim 1, characterized in that: The waterproof seal is a locking screw sleeve (9), and the lead wire of the stator (4) is led out of the casing (3) through the locking screw sleeve (9).

7. The vertically mounted waterproof and easy-drainage structure motor according to claim 1, characterized in that: The shaft extension end (601) of the rotating shaft (6) is provided with a fan positioning connection structure (602), and the upper end of the fan positioning connection structure (602) is provided with a ball cap (10) fastened with a thread.

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