A high protection grade fan

Abstract

A high protection level fan includes a central rotating shaft, a bearing, a stator seat, a stator core, and a rotor core. The central rotating shaft is fixedly provided with a stator seat, a bearing is fixedly installed on the stator seat, the stator core is fixedly installed outside the bearing, a rotor core is arranged outside the stator core, a stator winding is wound on the stator core, an insulating protective cover is fixed outside the stator winding, the central rotating shaft includes a fixed end and a power output end extending outward, a protective end cover is fixedly arranged on the side of the stator winding close to the power output end, and a rotor sealing sleeve is arranged on the side of the rotor core close to the fixed end; a hollow connector in the middle is fixedly connected to the side of the stator seat close to the fixed end by screws, a lead-out wire is arranged in the connector, and a lead-out protective connector is fixedly arranged at the contact surface between the connector and the lead-out wire; and a plurality of wind blades are fixedly connected to the outside of the rotor core. The present invention provides an all-round sealing structure, so that the fan has an excellent protection level.

Description

Technical Field

[0001] The invention relates to the technical field of fans, and in particular to a fan with a high protection level. Background Art

[0002] Compared with ordinary fans, external rotor fans are widely used due to their high efficiency, low noise, light weight, easy installation and maintenance, etc., especially in the fan field, they also have the advantage of compact structure. Fans are used in various scenarios and often have to work for a long time in very harsh environments, which requires very high sealing performance. Existing fans still have certain shortcomings in sealing effect. There is no special reinforced sealing structure in the weak structures and gaps that are easy to enter oil, gas and water, resulting in greater safety hazards when using the fan and a short service life. How to improve the protection level and enhance the sealing protection function has become a direction for further improvement. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a high-protection-level fan with an all-round sealing structure in view of the problems existing in the prior art.

[0004] The technical solution adopted by the present invention to solve the above technical problems is: a high protection level fan, characterized in that it includes a central rotating shaft, a bearing, a stator seat, a stator core, a rotor core, a stator winding, an insulating cover, a protective end cover, a rotor sealing sleeve, a connector, an outlet wire, an outlet wire protection connector and a wind blade, the central rotating shaft is fixedly provided with a stator seat, the stator seat is fixedly installed with a bearing, the stator core is fixedly installed outside the bearing, the outer side of the stator core is provided with a rotor core, the stator core is wound with a stator winding, and the An insulating cover is fixedly arranged outside the stator winding, the central rotating shaft includes a fixed end and a power output end extending outward, a protective end cover is fixedly arranged on the side of the stator winding close to the power output end, and a rotor sealing sleeve is arranged on the side of the rotor core close to the fixed end; a hollow connector in the middle is fixedly connected to the side of the stator seat close to the fixed end by screws, a lead-out wire is arranged in the connector, and a lead-out protection connector is fixedly arranged at the contact surface between the connector and the lead-out wire; a plurality of wind blades are fixedly connected to the outside of the rotor core.

[0005] Furthermore, a sealing ring is provided between the rotor sealing sleeve and the connector.

[0006] Furthermore, a retaining ring is fixedly arranged between the sealing ring and the insulating protective cover, and the retaining ring is clamped in the inner wall of the rotor sealing sleeve.

[0007] Furthermore, a sealant coating is provided at the joint surface between the rotor core and the rotor sealing sleeve.

[0008] Furthermore, the wind blades and the rotor core are fixedly connected by gas shielded welding.

[0009] Furthermore, the lead-out wires use IP54 protective connectors.

[0010] Furthermore, the stator winding is wound by copper wire.

[0011] Compared with the prior art, the high protection level fan of the present invention has the following beneficial effects: the rotor core and the rotor sealing sleeve are precisely matched and sealed with sealant applied to the joint surface, so that no oil, gas or water can enter here, thereby achieving excellent protection effect; and, when the rotor and the stator rotate relative to each other, a rotary sealing combination composed of a stator seat, a connector, a sealing ring and a retaining ring is used for sealing, thereby ensuring that no oil, gas or water can enter when the rotor and the stator rotate relative to each other, thereby achieving the effect of rotation protection; in addition, the lead-out wires use an IP54 protective connector, which effectively prevents oil, gas and water from entering the motor in the fan along the lead-out wire hole and damaging the motor, thereby preventing the consequences of damaging the core components of the protective fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of the high protection grade fan of the present invention.

[0013] Figure numbers: 1, central shaft; 101, fixed end; 102, power output end; 2, bearing; 3, stator seat; 4, stator core; 5, rotor core; 6, stator winding; 7, insulation cover; 8, protective end cover; 9, rotor sealing sleeve; 10, connector; 11, lead wire; 12, lead wire protection connector; 13, wind blade; 14, sealing ring; 15, retaining ring; 16, sealant coating; DETAILED DESCRIPTION

[0014] The present invention is further described in detail below with reference to the accompanying drawings.

[0015] like Figure 1As shown, the high protection level fan of this embodiment includes a central rotating shaft 1, a bearing 2, a stator seat 3, a stator core 4, a rotor core 5, a stator winding 6, an insulating cover 7, a protective end cover 8, a rotor sealing sleeve 9, a connector 10, an outlet wire 11, an outlet wire protection connector 12 and a wind blade 13. The stator seat 3 is fixedly arranged on the central rotating shaft 1, the bearing 2 is fixedly installed on the stator seat 3, the stator core 4 is fixedly installed outside the bearing 2, the rotor core 5 is arranged outside the stator core 4, and the stator winding 6 is wound on the stator core 4, and the stator winding 6 is wound by copper wire; an insulating cover 7 is fixedly arranged outside the stator winding 6, which helps to improve the protective sealing effect; the central rotating shaft 1 includes a fixed end 101 and a power output end 102 extending outward A protective end cover 8 is fixedly provided on the side of the stator winding 6 close to the power output end 102, and a rotor sealing sleeve 9 is provided on the side of the rotor core 5 close to the fixed end 101. The rotor core 5 and the rotor sealing sleeve 9 are precisely matched and sealed with sealant applied to the joint surface to form a sealant coating 16. No oil, gas or water will enter here, achieving an excellent protection effect; a hollow connector 10 is fixedly connected to the side of the stator seat 3 close to the fixed end 101 by screws, and a lead-out wire 11 is provided in the connector 10, that is, the lead-out wire 11 passes through the connector 10, and an outgoing wire protection connector 12 is fixedly provided at the contact surface between the connector 10 and the lead-out wire 11; a plurality of wind blades 13 are fixedly connected to the outside of the rotor core 5.

[0016] In addition, a sealing ring 14 is provided between the rotor sealing sleeve 9 and the connector 10 to enhance the sealing effect. At the same time, a retaining ring 15 is fixedly provided between the sealing ring 14 and the insulating cover 7, and the retaining ring 15 is clamped in the inner wall of the rotor sealing sleeve 9. The rotary sealing combined structure composed of the stator seat 3, the connector 10, the sealing ring 14, and the retaining ring 15 performs an all-round sealing of the fan, ensuring that no oil, gas, or water enters when the rotor and the stator rotate relative to each other, thereby achieving the effect of rotation protection.

[0017] Specifically, the lead wire 11 adopts an IP54 protective connector, which effectively prevents oil, gas, and water from entering the motor in the fan along the lead wire 11 hole and damaging the motor, thereby preventing the consequences of damaging the core components of the protective fan.

[0018] In addition, the wind blades 13 and the rotor core 5 are fixedly connected by gas shielded welding to ensure the firmness of the connection.

[0019] The high protection level of the present invention adds a protective function on the basis of an ordinary fan; the rotor core and the rotor sealing sleeve are precisely matched and sealed with a sealant applied to the joint surface; when the rotor and the stator rotate relative to each other, a rotary sealing combination composed of a stator seat, a connector, a sealing ring, and a retaining ring is used for sealing, thereby ensuring that no oil, gas, or water enters during the relative rotation of the rotor and the stator; the lead-out wires use an IP54 protective connector and a variety of auxiliary reinforced sealing structures, which can effectively prevent oil, gas, and water from entering the motor in the fan along the lead-out wire hole to damage the motor, thereby preventing the consequences of damaging the core components of the protective fan.

[0020] Finally, it should be noted that the above embodiments only illustrate the technical solutions of the present invention, rather than limiting 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fan with a high protection level, characterized in that: The invention comprises a central rotating shaft (1), a bearing (2), a stator seat (3), a stator core (4), a rotor core (5), a stator winding (6), an insulating protective cover (7), a protective end cover (8), a rotor sealing sleeve (9), a connector (10), an outlet wire (11), an outlet wire protection connector (12) and a wind blade (13), wherein the central rotating shaft (1) is fixedly provided with a stator seat (3), the stator seat (3) is fixedly provided with a bearing (2), the stator core (4) is fixedly provided outside the bearing (2), the rotor core (5) is provided outside the stator core (4), a stator winding (6) is wound on the stator core (4), an insulating protective cover (7) is fixedly provided outside the stator winding (6), the central rotating shaft (1) comprises a fixed end (101) and a power output end (102) extending outward, and a stator winding (6) is fixedly provided on a side close to the power output end (102) A protective end cover (8), a rotor sealing sleeve (9) is arranged on one side of the rotor core (5) close to the fixed end (101); a central hollow connector (10) is fixedly connected to one side of the stator seat (3) close to the fixed end (101) by screws, a lead-out wire (11) is arranged inside the connector (10), and a lead-out protection joint (12) is fixedly arranged at the contact surface between the connector (10) and the lead-out wire (11); a plurality of wind blades (13) are fixedly connected to the outer side of the rotor core (5), a sealing ring (14) is further arranged between the rotor sealing sleeve (9) and the connector (10), a retaining ring (15) is fixedly arranged between the sealing ring (14) and the insulating protective cover (7), and the retaining ring (15) is clamped in the inner wall of the rotor sealing sleeve (9), and a sealing glue coating (16) is arranged at the joint surface between the rotor core (5) and the rotor sealing sleeve (9).

2. The high protection level fan according to claim 1, characterized in that: The wind blades (13) and the rotor core (5) are fixedly connected by gas shielded welding.

3. The high protection level fan according to claim 1, characterized in that: The lead-out wire (11) adopts an IP54 protection connector.

4. The high protection level fan according to claim 1, characterized in that: The stator winding (6) is wound from copper wires.

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