Fan convenient to drain water

Abstract

The utility model relates to the technical field of fans, and provides a fan convenient to drain water, which comprises a fan shell, a motor and an impeller, an impeller is mounted on the motor, and the motor and the impeller are mounted in the fan shell; the impeller comprises an impeller base part and a plurality of blades which are uniformly arranged on the periphery of the impeller base part; the motor comprises a stator and a rotor. The rotor comprises a rotating shaft, a rotor magnet holder and a rotor magnet; the top of the rotor magnet holder is provided with at least one drain hole; the periphery of the rotor magnet retainer is sleeved with an impeller base part; and the inner wall of the impeller base part is arranged to be an inclined surface, so that a drainage gap is formed between the impeller base part and the rotor magnet retainer. According to the utility model, residual water can be discharged through the drainage holes and the drainage gaps.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan which is convenient for drainage. Background Art

[0002] Fans are important components in many electromechanical devices. For example, fans are used in some equipment for ventilation and heat dissipation.

[0003] For some fans that may come into contact with water (fans used in outdoor environments or fans in which large changes in temperature easily lead to condensation of water), the current fan structure does not have a drainage structure, and water may enter the rotor magnet holder and the inside of the blades. The rotor magnet holder and the resin blade shell are tightly matched, and water is not easy to flow out. Water accumulation in the fan will affect the normal operation of the fan. Utility Model Content

[0004] The utility model mainly solves the technical problem that the current fan structure has no drainage structure, water may enter the rotor frame and the inside of the blades, and the rotor frame and the resin blade shell are tightly matched, so water is not easy to flow out, affecting the normal operation of the fan. A fan that is easy to drain water is proposed to achieve the purpose of discharging residual water through drainage holes and drainage gaps.

[0005] The utility model provides a fan that is convenient for drainage, comprising: a fan housing, a motor and an impeller;

[0006] The motor is provided with an impeller, and the motor and the impeller are provided in a fan housing;

[0007] The impeller comprises: an impeller base and a plurality of blades evenly arranged on the periphery of the impeller base;

[0008] The motor comprises: a stator and a rotor;

[0009] The rotor comprises: a rotating shaft, a rotor magnet holder and a rotor magnet;

[0010] At least one drainage hole is formed on the top of the rotor magnet holder;

[0011] The outer periphery of the rotor magnet holder is sleeved with an impeller base;

[0012] The inner wall of the impeller base is arranged as an inclined surface so that a drainage gap is formed between the impeller base and the rotor magnet retaining frame.

[0013] Preferably, when there are multiple drainage holes, the multiple drainage holes are evenly arranged in the circumferential direction.

[0014] Preferably, a rotor magnet is arranged on the inner periphery of the rotor magnet holder; and a rotating shaft is arranged axially on the rotor magnet holder.

[0015] Preferably, the stator of the motor comprises a circuit board.

[0016] Preferably, the edge of the drainage gap is located radially outside the circuit board in the circumferential direction.

[0017] Preferably, the stator comprises: a stator core and a coil.

[0018] The utility model provides a fan that is easy to drain. A drainage hole is provided at the top of the rotor magnet holder near the water accumulation, and the water can flow out through the drainage hole; the inner wall of the impeller base is set as an inclined surface, so that a drainage gap is formed between the impeller base and the rotor magnet holder, and water can flow out through the drainage gap. The utility model solves the problem of residual water on the fan blades, and the residual water can be discharged through the drainage hole and the drainage gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a fan housing of the utility model that facilitates drainage;

[0020] Figure 2 This is a schematic diagram of the structure of the motor and impeller of the fan that is convenient for drainage of the utility model. Figure 1 (front);

[0021] Figure 3 This is a schematic diagram of the structure of the motor and impeller of the fan that is convenient for drainage of the utility model. Figure 2 (back);

[0022] Figure 4 It is an axial cross-sectional view of the motor and impeller of the fan for facilitating drainage of the utility model;

[0023] Figure 5 It is a schematic structural diagram of the impeller of the fan for facilitating drainage of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the motor of the fan which is convenient for drainage of the utility model;

[0025] Figure 7 The utility model is a schematic diagram of the internal structure of the motor of the fan which is convenient for drainage.

[0026] Figure numerals: 1, impeller base; 2, blades; 3, drainage hole; 4, drainage gap; 5, rotating shaft; 6, rotor magnet holder; 7, rotor magnet; 8, circuit board; 9, fan housing; 10, stator core. DETAILED DESCRIPTION

[0027] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the sake of ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of the contents.

[0028] The embodiment of the utility model provides a fan that is convenient for drainage, comprising: a fan housing 9, a motor and an impeller.

[0029] like Figure 1-4 As shown, an impeller is installed on the motor, and the motor and the impeller are installed in a fan housing 9.

[0030] like Figure 5 As shown, the impeller comprises: an impeller base 1 and a plurality of blades 2 evenly arranged on the periphery of the impeller base 1 .

[0031] like Figure 4 , 6 As shown in FIG. 7 , the motor comprises: a stator and a rotor. The stator comprises: a stator core 10 and a coil, wherein the stator core 10 has a plurality of coil winding parts, and the coil is wound on the coil winding parts.

[0032] The rotor comprises: a rotating shaft 5, a rotor magnet holder 6 and a rotor magnet 7; the rotor magnet 7 is arranged on the inner periphery of the rotor magnet holder 6; and the rotating shaft 5 is arranged in the axial direction of the rotor magnet holder 6. The stator of the motor comprises a circuit board 8.

[0033] At least one drainage hole 3 is formed on the top of the rotor magnet holder 6. When there are multiple drainage holes 3, the multiple drainage holes 3 are evenly arranged in the circumferential direction. The drainage hole 3 is formed on the top of the rotor magnet holder 6 near the water accumulation area, and the water can flow out through the drainage hole 3.

[0034] The outer circumference of the rotor magnet holder 6 is sleeved with an impeller base 1; the inner wall of the impeller base 1 is set as an inclined surface, and the thickness of the impeller base 1 at one end close to the drainage hole 3 gradually decreases toward the end away from the drainage hole 3, so that a drainage gap 4 is formed between the impeller base 1 and the rotor magnet holder 6. The inner wall of the impeller base 1 is set as an inclined surface, and water can flow out through the drainage gap 4. The edge of the drainage gap 4 is located radially outside the circuit board 8 in the circumferential direction, and does not affect the operation of the circuit board 8.

[0035] The utility model solves the problem of residual moisture in fan blades, and the residual moisture can be discharged through the drainage hole 3 and the drainage gap 4.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that modifying the technical solutions recorded in the aforementioned embodiments, or replacing part or all of the technical features therein by equivalents, does not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A fan for facilitating drainage, comprising: Fan housing (9), motor and impeller; An impeller is mounted on the motor, and the motor and the impeller are mounted in a fan housing (9); Features: The impeller comprises: an impeller base (1) and a plurality of blades (2) evenly arranged on the periphery of the impeller base (1); The motor comprises: a stator and a rotor; The rotor comprises: a rotating shaft (5), a rotor magnet holder (6) and a rotor magnet (7); At least one drainage hole (3) is formed on the top of the rotor magnet holder (6); The outer periphery of the rotor magnet holder (6) is provided with an impeller base (1); The inner wall of the impeller base (1) is arranged as an inclined surface, so that a drainage gap (4) is formed between the impeller base (1) and the rotor magnet retaining frame (6).

2. The fan for facilitating drainage according to claim 1, characterized in that: When the number of the drainage holes (3) is plural, the plurality of drainage holes (3) are evenly arranged in the circumferential direction.

3. The fan for facilitating drainage according to claim 1, characterized in that: A rotor magnet (7) is arranged on the inner periphery of the rotor magnet holder (6); and a rotating shaft (5) is arranged in the axial direction of the rotor magnet holder (6).

4. The fan for facilitating drainage according to claim 3, characterized in that: The stator of the motor comprises a circuit board (8).

5. The fan for facilitating drainage according to claim 4, characterized in that: The edge of the drainage gap (4) is located radially outside the circuit board (8) in the circumferential direction.

6. The fan for facilitating drainage according to claim 1, characterized in that: The stator comprises a stator core (10) and a coil.

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