Rotor magnet yoke for fan

Abstract

The utility model belongs to the technical field of fans, and particularly relates to a rotor yoke for a fan, which comprises a rotating shaft and a rotor core, the rotor core can be formed by laminating and pressing a plurality of silicon steel sheets, the rotating shaft is fixedly connected with the rotor core, the surface of the rotor core is provided with radiating holes which are annularly distributed, and the radiating holes are arranged in the rotor core. The heat dissipation holes can reduce weight and facilitate structural balance; the rotating shaft rotates to drive the blades to synchronously rotate to drive air flow to flow through the heat dissipation holes, then heat dissipation is conducted on the interior of the fan, dust can be filtered and intercepted through cooperation of the dust cover and the baffle ring, and compared with the prior art, the dust is prevented from diffusing into the fan along with flowing of the air flow; and the brush plate can uniformly clean the surface of the dustproof cover to remove dust and impurities attached to the surface of the dustproof cover.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a rotor yoke for a fan. Background Art

[0002] Fans are widely used in various fan blades, various smoke and air ducts, air conditioning condenser cooling fans, automotive temperature control system internal and external cooling fans, and computer and controller cooling fans. Its structure is generally that the motor rotor is connected to the impeller as the energy output, and drives the impeller to rotate relative to the motor stator seat with a rotating axis, thereby performing work externally. However, the continuous operation time of the fan is usually long. Long-term operation will cause the temperature of the motor to continue to rise. The heat generated will increase the winding resistance in the motor stator, which will increase energy consumption and reduce efficiency.

[0003] The existing Chinese patent with announcement number CN210053258U discloses a heat dissipation fan rotor, including a rotating shaft, on which a rotor core is connected to rotate synchronously; the rotor core is cylindrical and fixedly sleeved on the rotating shaft through a through hole opened in the center thereof, a plurality of heat dissipation holes are arranged at intervals along the circumferential direction on the rotor core, the heat dissipation holes penetrate the rotor core axially and are arranged at the middle position of the rotor core radially, a plurality of magnet mounting grooves are arranged at intervals along the circumferential direction at the outer edge of the rotor core, rare earth magnets are correspondingly installed in the magnet mounting grooves, and a fan wheel structure that rotates synchronously therewith is also provided at at least one end of the rotor core to better dissipate heat and cool the inside of the motor during rotation.

[0004] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: the device drives the air flow to dissipate heat from the motor through the rotation of the fan wheel structure, and the dust in the air will also follow the airflow into the interior of the motor. The dust-proof effect needs to be improved, and the use effect is not good, which needs to be improved; therefore, a rotor yoke for a fan is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the utility model proposes a rotor yoke for a fan.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows: a rotor yoke for a fan described in the utility model comprises a rotating shaft and a rotor core, the rotor core can be formed by stacking and pressing a plurality of silicon steel sheets, the rotating shaft and the rotor core are fixedly connected, the surface of the rotor core is provided with heat dissipation holes distributed in an annular shape, the heat dissipation holes can reduce weight and are beneficial to structural balance, the edge of the rotor core is provided with mounting grooves distributed in an annular shape, a magnet is installed inside the mounting groove, a heat dissipation component is installed on the surface of the rotating shaft, the heat dissipation component comprises a connecting ring, the connecting ring The connecting ring is fastened to the rotating shaft by bolts, and a fixing component is installed at one end of the connecting ring facing the rotor core, and the fixing component includes a limit ring 1. The limit ring 1 and the limit ring 2 are made of copper material with good thermal conductivity. The surface of the limit ring 1 is provided with through holes distributed in a ring shape corresponding to the heat dissipation holes. When in use, the rotation of the rotating shaft drives the blades to rotate synchronously and drives the air flow to flow through the heat dissipation holes, thereby dissipating the heat inside the fan and cooling the fan (including the stator with copper wire wound on the outside), thereby ensuring the efficiency of the fan working for a long time and reducing energy consumption.

[0007] Preferably, the outside of the connecting ring is fixedly connected with blades distributed in an annular shape.

[0008] Preferably, a dust cover is fixedly connected to the outside of the connecting ring, and the dust can be filtered and intercepted through the cooperation of the dust cover and the baffle ring. Compared with the prior art, dust is prevented from spreading to the inside of the fan along with the air flow.

[0009] Preferably, the outer part of the connecting ring is rotatably connected to a counterweight frame, and the side wall of the counterweight frame is fixedly connected to a brush plate. The brush plate is kept vertically downward by the gravity of the counterweight frame, and its surface can be evenly cleaned when the dust cover rotates to remove dust and impurities attached to the surface of the dust cover.

[0010] Preferably, a threaded connection tube is installed inside the through hole, and the number of the threaded connection tubes is set to two, and both ends of the threaded connection tubes pass through the heat dissipation holes respectively and extend to the outside.

[0011] Preferably, a limiting ring 2 is inserted into the surface of the other end of the threaded connection tube. When installing the magnet, the magnet is placed inside the installation groove, and the limiting ring 1 and the limiting ring 2 are aligned and placed on both sides of the magnet. The threaded connection tube passes through the heat dissipation hole and is connected to the threaded ring. Then, the limiting ring 1 and the limiting ring 2 are connected through the threaded connection tube. The position of the magnet is quickly fixed. The installation is convenient and multiple groups of magnets can be quickly limited, saving installation time.

[0012] Preferably, both ends of the threaded connection tube are respectively threadedly connected with threaded rings.

[0013] Preferably, a fitting retaining ring is installed on the outside of the rotor core, and the outer edge of the retaining ring is fixedly connected to the inner wall of the fan body, and the retaining ring is used to prevent dust filtered by the dustproof net from passing through the rotor core.

[0014] The utility model is beneficial in that:

[0015] 1. The utility model drives the blades to rotate synchronously by rotating the rotating shaft, drives the airflow to flow through the heat dissipation holes, and then dissipates the heat inside the fan. The dust can be filtered and intercepted by the cooperation of the dust cover and the baffle ring. Compared with the prior art, the dust is prevented from spreading to the inside of the fan along with the air flow. When the dust cover rotates, the brush plate can evenly clean its surface to remove dust and impurities attached to the surface of the dust cover.

[0016] 2. The utility model places the magnet into the installation groove, fixes the limit ring 1 and the limit ring 2 on both sides of the magnet through a threaded connection tube, and quickly fixes the position of the magnet. It is easy to install and can quickly limit the position of multiple groups of magnets, saving installation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 Side view of

[0020] Figure 3 This is a schematic diagram of the structure of the heat dissipation component of the utility model;

[0021] Figure 4 This is a cross-sectional view of the dust cover of the utility model;

[0022] Figure 5 This is an exploded view of the fixing assembly of the utility model;

[0023] Figure 6 This is a schematic diagram of the retaining ring structure of the utility model.

[0024] In the figure: 1. rotating shaft; 2. rotor core; 3. heat dissipation hole; 4. mounting groove; 5. magnet; 6. heat dissipation assembly; 61. connecting ring; 62. blade; 63. dust cover; 64. counterweight frame; 65. brush plate; 7. fixing assembly; 71. limiting ring 1; 72. through hole; 73. threaded connection cylinder; 74. limiting ring 2; 75. threaded ring; 8. retaining ring; 9. fan body. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-6 As shown, a rotor yoke for a fan comprises a rotating shaft 1 and a rotor core 2. The rotor core 2 can be formed by stacking and pressing a plurality of silicon steel sheets. The rotating shaft 1 and the rotor core 2 are fixedly connected. The surface of the rotor core 2 is provided with heat dissipation holes 3 distributed in an annular shape. The heat dissipation holes 3 can reduce weight and are beneficial to structural balance. The edge of the rotor core 2 is provided with mounting grooves 4 distributed in an annular shape. A magnet 5 is installed inside the mounting groove 4. A heat dissipation component 6 is installed on the surface of the rotating shaft 1. The heat dissipation component 6 comprises a connecting ring 61. The connecting ring 61 is fastened to the rotating shaft 1 by bolts. A fixing assembly 7 is installed at one end of the connecting ring 61 facing the rotor core 2, and the fixing assembly 7 includes a limiting ring 1 71. The limiting ring 1 71 and the limiting ring 2 74 are made of copper material with good thermal conductivity. The surface of the limiting ring 1 71 is provided with through holes 72 distributed in a ring shape corresponding to the heat dissipation holes 3. When in use, the blades 62 are driven to rotate synchronously by the rotation of the rotating shaft 1, driving the air flow to flow through the heat dissipation holes 3, thereby dissipating the heat inside the fan and cooling the fan (including the stator with copper wire wound on the outside), thereby ensuring the efficiency of the fan working for a long time and reducing energy consumption.

[0027] The outside of the connecting ring 61 is fixedly connected with blades 62 distributed in an annular shape.

[0028] The outside of the connecting ring 61 is fixedly connected with a dust cover 63, and the dust can be filtered and intercepted through the cooperation of the dust cover 63 and the retaining ring 8. Compared with the prior art, it can prevent the dust from spreading to the inside of the fan along with the air flow.

[0029] The outer portion of the connecting ring 61 is rotatably connected to a counterweight frame 64, and the side wall of the counterweight frame 64 is fixedly connected to a brush plate 65. The brush plate 65 is kept vertically downward by the gravity of the counterweight frame 64, and its surface can be evenly cleaned when the dust cover 63 rotates to remove dust and impurities attached to the surface of the dust cover 63.

[0030] A threaded connection tube 73 is installed inside the through hole 72 . The number of the threaded connection tubes 73 is set to two. Both ends of the threaded connection tubes 73 pass through the heat dissipation hole 3 and extend to the outside.

[0031] The surface of the other end of the threaded connection tube 73 is inserted with a limit ring 2 74. When installing the magnet 5, the magnet 5 is placed inside the installation groove 4, and the limit ring 1 71 and the limit ring 2 74 are aligned and placed on both sides of the magnet 5. The threaded connection tube 73 passes through the heat dissipation hole 3 and is connected to the threaded ring 75. Then, the limit ring 1 71 and the limit ring 2 74 are connected through the threaded connection tube 73. The position of the magnet 5 is quickly fixed. The installation is convenient and multiple groups of magnets 5 can be quickly limited, saving installation time.

[0032] Both ends of the threaded connection tube 73 are threadedly connected with threaded rings 75 .

[0033] A fitting retaining ring 8 is installed on the outside of the rotor core 2 , and the outer edge of the retaining ring 8 is fixedly connected to the inner wall of the fan body. The retaining ring 8 is used to prevent dust filtered by the dustproof net from passing through the rotor core 2 .

[0034] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0035] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art.

[0036] Working principle: when in use, the rotating shaft 1 rotates to drive the blades 62 to rotate synchronously, driving the airflow to flow through the heat dissipation holes 3, thereby dissipating the heat inside the fan, and cooling the fan (including the stator with copper wire wound on the outside), thereby ensuring the efficiency of the fan working for a long time and reducing energy consumption. The dust can be filtered and intercepted by the cooperation of the dust cover 63 and the baffle ring 8. Compared with the prior art, dust is prevented from spreading to the inside of the fan along with the airflow, and the brush plate 65 is kept vertically downward by the gravity of the counterweight frame 64. When the dust cover 63 rotates, its surface can be evenly cleaned to remove dust and impurities attached to the surface of the dust cover 63;

[0037] When installing the magnet 5, place the magnet 5 into the installation groove 4, align the limit ring 1 71 and the limit ring 2 74 and place them on both sides of the magnet 5, pass the threaded connection tube 73 through the heat dissipation hole 3 and connect with the threaded ring 75, and then connect the limit ring 1 71 and the limit ring 2 74 through the threaded connection tube 73, so as to quickly fix the position of the magnet 5. The installation is convenient, and multiple groups of magnets 5 can be quickly limited, saving installation time.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A rotor yoke for a fan, comprising a rotating shaft (1) and a rotor core (2), characterized in that: The surface of the rotor core (2) is provided with heat dissipation holes (3) distributed in an annular shape, the edge of the rotor core (2) is provided with mounting grooves (4) distributed in an annular shape, a magnet (5) is installed inside the mounting grooves (4), a heat dissipation assembly (6) is installed on the surface of the rotating shaft (1), the heat dissipation assembly (6) comprises a connecting ring (61), the connecting ring (61) is fastened to the rotating shaft (1) by bolts, a fixing assembly (7) is installed at one end of the connecting ring (61) facing the rotor core (2), the fixing assembly (7) comprises a limiting ring (71), and a surface of the limiting ring (71) is provided with through holes (72) distributed in an annular shape at locations corresponding to the heat dissipation holes (3).

2. The rotor yoke for a fan according to claim 1, characterized in that: The outside of the connecting ring (61) is fixedly connected with blades (62) distributed in an annular shape.

3. The rotor yoke for a fan according to claim 1, characterized in that: A dust cover (63) is fixedly connected to the outside of the connecting ring (61).

4. The rotor yoke for a fan according to claim 1, characterized in that: The outside of the connecting ring (61) is rotatably connected to a counterweight frame (64), and the side wall of the counterweight frame (64) is fixedly connected to a brush plate (65).

5. The rotor yoke for a fan according to claim 1, characterized in that: A threaded connection tube (73) is installed inside the through hole (72), and the number of the threaded connection tubes (73) is set to two. Both ends of the threaded connection tube (73) pass through the heat dissipation hole (3) and extend to the outside.

6. The rotor yoke for a fan according to claim 5, characterized in that: A second limiting ring (74) is inserted into the surface of the other end of the threaded connection tube (73).

7. The rotor yoke for a fan according to claim 5, characterized in that: Both ends of the threaded connection tube (73) are respectively threadedly connected with threaded rings (75).

8. The rotor yoke for a fan according to claim 5, characterized in that: A matching retaining ring (8) is installed on the outside of the rotor core (2), and the outer edge of the retaining ring (8) is fixedly connected to the inner wall of the fan body (9).

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