Integrated magnet ring efficient energy-saving automobile air conditioner fan

Abstract

The utility model discloses an integrated magnet ring efficient energy-saving automobile air conditioner fan, and belongs to the technical field of automobile heat dissipation system components. The fan comprises a base, a split flow guide cover (an upper cover and a lower cover are connected in a buckled mode), an impeller and a motor. The flow guide cover is connected with the base through a rubber buffer gasket to reduce vibration and seal; the stator of the motor adopts upper and lower plastic sleeve frames to wrap silicon steel sheets, and the rotor adopts an integrated annular magnet to improve the magnetic field efficiency; the rotating shaft is mounted through the oil-retaining bearing, and the isolating baffle prevents dust from entering; a spiral groove in the inner wall of the flow guide cover guides blade airflow to be output directionally. The fan effectively solves the problems that an existing fan is high in air leakage rate, obvious in vibration transmission and low in magnetic ring efficiency, and is suitable for new energy automobile battery heat dissipation scenes.

Description

Technical Field

[0001] The utility model relates to a component of an automobile cooling system, specifically an integrated magnetic ring high-efficiency and energy-saving automobile air-conditioning fan for cooling batteries of new energy vehicles. By optimizing the guide structure, motor design and vibration suppression scheme, the air volume transmission efficiency is improved and the operating vibration is reduced. Background Art

[0002] Battery heat dissipation in new energy vehicles is crucial to battery performance, lifespan, and safety. In high-temperature environments (e.g., above 35°C), battery capacity retention significantly decreases (to only 70%-85%), slowing charging speeds and even increasing the risk of thermal runaway (potentially leading to fire or explosion). This also increases the risk of battery management system failure. Therefore, cooling air must be delivered to the battery installation location via the vehicle's air conditioning fan to achieve heat dissipation.

[0003] In the prior art, automobile air-conditioning fans have the following defects:

[0004] 1. High air leakage rate of the air guide: Traditional air guides are one-piece structures. The gap between the impeller and the air guide cannot be effectively sealed, and air is easily leaked from the gap during transmission, reducing transmission efficiency. In addition, the one-piece structure makes it difficult to accurately guide the wind direction to the outlet, resulting in large air dispersion losses.

[0005] 2. Significant vibration transmission: The motor is directly mounted on the housing. During operation, vibration is easily transmitted to the vehicle body, affecting the user experience.

[0006] 3. Insufficient magnetic ring efficiency: Traditional motors use split magnetic rings, which have uneven magnetic field distribution and low intensity, limiting energy conversion efficiency.

[0007] Therefore, there is an urgent need for an automobile air-conditioning fan that reduces air leakage rate, improves air volume transmission efficiency and suppresses operating vibration. Utility Model Content

[0008] The purpose is to provide an integrated magnetic ring high-efficiency and energy-saving automobile air-conditioning fan. Through the split deflector cover, integrated ring magnet, rubber buffer structure and spiral deflector design, it solves the problems of high air leakage rate, obvious vibration transmission and low magnetic ring efficiency of existing fans, and realizes efficient air volume transmission and low vibration operation.

[0009] To achieve the above objectives, the present invention provides the following technical solutions: an integrated magnetic ring high-efficiency energy-saving automobile air-conditioning fan, comprising a base, a shroud, an impeller, and a motor; the impeller is disposed in the shroud, the motor is mounted on the base, and the impeller is fixed to the rotating shaft of the motor;

[0010] The deflector is a split structure, including an upper cover and a lower cover, the upper cover and the lower cover are connected by a snap; the lower cover and the base are fastened by a first rubber buffer washer bolt; the upper cover and the lower cover are respectively provided with a mounting position, each mounting position is embedded with a second rubber buffer washer;

[0011] The motor includes a rotating shaft, a stator, and a rotor; the stator includes stacked silicon steel sheets, a coil frame, and a coil; the coil frame includes an upper sleeve and a lower sleeve, the upper sleeve and the lower sleeve are combined to form an inner cavity, and the stacked silicon steel sheets are wrapped in the inner cavity; the coil is wound on the coil frame; the upper sleeve and the lower sleeve are both made of plastic material to achieve insulation between the coil and the silicon steel sheets; the coil frame is sleeved on the convex column of the base;

[0012] The rotor includes a rotary cover, an integral annular magnet being fixed to the inner wall of the rotary cover; the inner wall of the annular magnet is gap-fitted with the peripheral wall of the coil frame; the rotary cover is fixedly connected to the rotating shaft; a slot corresponding to the rotating shaft is formed on the boss of the base, and the rotating shaft is rotatably inserted into the slot via an oil-containing bearing; an isolation baffle is sleeved on the rotating shaft, and the isolation baffle is sealed against the end surface of the oil-containing bearing;

[0013] A spiral groove is provided on the inner wall of the air guide cover, and the annular evenly distributed blades of the impeller are placed in the spiral groove. The wind flow generated by the rotation of the blades is guided and output along the spiral groove.

[0014] The beneficial effects of the utility model are:

[0015] 1. Reduce air leakage rate and improve air volume transmission efficiency:

[0016] The air deflector adopts a split snap-on structure of the upper and lower covers, combined with the spiral groove design on the inner wall. When the blades rotate, the airflow flows directionally along the spiral groove to avoid leakage in the gap. At the same time, a second rubber buffer gasket is set at the installation position of the upper and lower covers to enhance the sealing and reduce vibration transmission.

[0017] 2. Suppress operating vibration:

[0018] The lower cover and the base are bolted together by a first rubber buffer washer, and a second rubber buffer washer is provided at the mounting position of the upper cover and the lower cover. The elastic buffering effect of the rubber effectively isolates the transmission of motor vibration to the vehicle body, thereby improving the user experience.

[0019] 3. Optimize magnetic ring performance:

[0020] The rotor uses an integrated ring magnet, and the magnetic field is evenly distributed in the circular closed path, avoiding the magnetic field dispersion problem of the split magnetic ring, improving the magnetic field strength and stability, and enhancing the energy conversion efficiency of the motor.

[0021] 4. Extend bearing life:

[0022] The rotating shaft is rotatably installed through the oil-containing bearing, and an isolation baffle is sleeved on the rotating shaft to block the bearing end face, preventing dust from entering the bearing, reducing wear, extending the service life of the oil-containing bearing, and ensuring smooth rotation of the rotating shaft.

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A perspective view of a specific embodiment of the present utility model;

[0025] Figure 2 An exploded view of a specific embodiment of the present utility model;

[0026] Figure 3 A cross-sectional view of a specific embodiment of the present utility model;

[0027] Figure 4 for Figure 3 A magnified view of center.

[0028] In the figure, 1. base; 2. air guide cover; 3. impeller; 4. motor; 5. first rubber buffer gasket; 6. second rubber buffer gasket; 7. oil-containing bearing; 8. isolation baffle; 12. threaded hole; 13. boss; 21. upper cover; 22. lower cover; 23. spiral groove; 31. blade; 41. rotating shaft; 42. stator; 43. rotor; 131. slot; 211. hook groove; 221. triangular block; 421. silicon steel sheet; 422. coil frame; 4221. upper sleeve; 4222. lower sleeve; 431. screw cover; 432. ring magnet. DETAILED DESCRIPTION

[0029] The present invention is described in detail below through examples, which are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention.

[0030] like Figure 1 — Figure 4 As shown, the integrated magnetic ring high-efficiency and energy-saving automobile air-conditioning fan of this embodiment includes a base 1, a deflector 2, an impeller 3 and a motor 4.

[0031] Air deflector structure

[0032] The deflector 2 is a split structure, consisting of an upper cover 21 and a lower cover 22 connected by snap fasteners (for example, a hook groove 211 is provided on the edge of the upper cover 21, and a triangular block 221 is provided on the edge of the lower cover 22, with the hook groove 211 and the triangular block 221 snapping into place). The lower cover 22 is bolted to the base 1 via a first rubber buffer washer 5 (2-5 mm thick, made of nitrile rubber). The bolts pass through the mounting holes of the base 1 and are fastened to the threaded holes 12 of the lower cover 22. A second rubber buffer washer 6 (1-3 mm thick, made of EPDM) is embedded in the corresponding mounting locations of the upper and lower covers 21 and 22 (e.g., the side near the motor 4) to dampen vibrations during operation of the impeller 3.

[0033] A spiral groove 23 (depth 3-8mm, pitch 10-15mm) is provided on the inner wall of the air guide hood 2. The annular uniformly distributed blades 31 (number 20-30) of the impeller 3 are placed in the spiral groove 23. When the blades 31 rotate, they push the airflow to flow in a directional manner along the spiral groove 23, thereby preventing air dispersion and leakage.

[0034] Motor structure

[0035] The motor 4 includes a rotating shaft 41 , a stator 42 , and a rotor 43 .

[0036] The stator 42 consists of stacked silicon steel sheets 421, a coil bobbin 422, and a coil (not shown). The coil bobbin 422 includes an upper sleeve 4221 and a lower sleeve 4222 (both made of plastic, such as PA66). The upper and lower sleeves 4221 and 4222 can be assembled together via positioning posts and positioning holes to form an inner cavity enclosing the silicon steel sheets 421 (with an inner diameter that is 0.1-0.3 mm clear of the outer diameter of the silicon steel sheets 421). The coil is wound around the outer periphery of the coil bobbin 422 and electrically isolated from the silicon steel sheets 421 by an insulating layer (the plastic material of the coil bobbin 422 itself). The coil bobbin 422 is sleeved onto the boss 13 of the base 1.

[0037] The rotor 43 includes a rotary cover 431, on the inner wall of which an integrated annular magnet 432 (made of neodymium iron boron, with a remanence ≥1.2T) is fixed by gluing or injection molding. A gap of 0.5-1.0 mm is formed between the inner wall of the annular magnet 432 and the peripheral wall of the coil frame 422, ensuring efficient coupling of the magnetic field. The rotary cover 431 is fixedly connected to one end of the rotating shaft 41 by a flat key or interference fit. The design of the annular magnet allows the magnetic field to be concentrated and focused throughout the annular structure, thereby generating a higher-intensity magnetic field. The annular structure allows the magnetic field to circulate in a closed annular path, reducing the space occupied by the magnet and facilitating installation and use. The special design makes the magnetic field more evenly distributed in the annular path, with less variation in the intensity of the magnetic field, thereby improving the stability of the magnetic field and facilitating stepless speed regulation of the motor.

[0038] The other end of the rotating shaft 41 is rotatably inserted into a slot 131 of the boss 13 of the base 1 via an oil-retaining bearing 7 (made of copper-based powder metallurgy). (The depth of slot 131 is 1 / 3-1 / 2 the length of the rotating shaft 41). A shielding plate 8 (made of polytetrafluoroethylene) is sleeved onto the rotating shaft 41. The inner hole of the shielding plate 8 has an interference fit with the rotating shaft 41, and the outer diameter of the shielding plate 8 aligns with the end face of the oil-retaining bearing 7, preventing dust from entering the bearing.

[0039] After adopting the above technical solution,

[0040] 1. Reduce air leakage rate and improve air volume transmission efficiency:

[0041] The air deflector adopts a split snap-on structure of the upper and lower covers, combined with the spiral groove design on the inner wall. When the blades rotate, the airflow flows directionally along the spiral groove to avoid leakage in the gap. At the same time, a second rubber buffer gasket is set at the installation position of the upper and lower covers to enhance the sealing and reduce vibration transmission.

[0042] 2. Suppress operating vibration:

[0043] The lower cover and the base are bolted together by a first rubber buffer washer, and a second rubber buffer washer is provided at the mounting position of the upper cover and the lower cover. The elastic buffering effect of the rubber effectively isolates the transmission of motor vibration to the vehicle body, thereby improving the user experience.

[0044] 3. Optimize magnetic ring performance:

[0045] The rotor uses an integrated ring magnet, and the magnetic field is evenly distributed in the circular closed path, avoiding the magnetic field dispersion problem of the split magnetic ring, improving the magnetic field strength and stability, and enhancing the energy conversion efficiency of the motor.

[0046] 4. Extend bearing life:

[0047] The rotating shaft is rotatably installed through the oil-containing bearing, and an isolation baffle is sleeved on the rotating shaft to block the bearing end face, preventing dust from entering the bearing, reducing wear, extending the service life of the oil-containing bearing, and ensuring smooth rotation of the rotating shaft.

[0048] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims be included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0049] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An integrated magnetic ring high-efficiency energy-saving automobile air-conditioning fan, comprising a base (1), a shroud (2), an impeller (3) and a motor (4); the impeller (3) is arranged in the shroud (2), the motor (4) is mounted on the base (1), and the impeller (3) is fixed on the rotating shaft (41) of the motor (4); characterized in that: The deflector (2) is a split structure, comprising an upper cover (21) and a lower cover (22), wherein the upper cover (21) and the lower cover (22) are connected by a snap fastener; the lower cover (22) and the base (1) are fastened by bolts through a first rubber buffer washer (5); the upper cover (21) and the lower cover (22) are respectively provided with mounting positions, each of which is embedded with a second rubber buffer washer (6); the motor (4) comprises a rotating shaft (41), a stator (42) and a rotor (43); the stator (42) comprises stacked silicon steel sheets (421), a coil frame (422) and a coil; the coil frame (422) comprises an upper sleeve (4221) and a lower sleeve (4221). ) and a lower sleeve frame (4222), the upper sleeve frame (4221) and the lower sleeve frame (4222) are combined to form an enclosing cavity, and the stacked silicon steel sheets (421) are all wrapped in the enclosing cavity except for the outer edge; the coil is wound on the coil frame (422); the coil frame (422) is sleeved on the convex column (13) of the base (1); the rotor (43) includes a rotary cover (431), and an integrated annular magnet (432) is fixed on the inner cavity wall of the rotary cover (431); the inner wall of the annular magnet (432) is gap-matched with the peripheral wall of the coil frame (422); the rotary cover (431) is fixedly connected to the rotating shaft (41).

2. The integrated magnetic ring high-efficiency energy-saving automobile air-conditioning fan according to claim 1 is characterized in that: The upper frame (4221) and the lower frame (4222) are both made of plastic.

3. The integrated magnetic ring high-efficiency energy-saving automobile air-conditioning fan according to claim 1 is characterized in that: A slot (131) corresponding to the rotating shaft (41) is provided on the boss (13) of the base (1), and the rotating shaft (41) is rotatably inserted into the slot (131) via an oil-containing bearing (7); an isolation baffle (8) is sleeved on the rotating shaft (41), and the isolation baffle (8) is sealed on the end surface of the oil-containing bearing (7).

4. The integrated magnetic ring high-efficiency energy-saving automobile air-conditioning fan according to claim 1 is characterized in that: A spiral groove (23) is provided on the inner wall of the guide cover (2), and the annular uniformly distributed blades (31) of the impeller (3) are placed in the spiral groove (23).

5. The integrated magnetic ring high-efficiency energy-saving automobile air-conditioning fan according to claim 1 is characterized in that: The buckle connection between the upper cover (21) and the lower cover (22) is as follows: a hook groove (211) is provided on the edge of the upper cover (21), a triangular clamping block (221) is provided on the edge of the lower cover (22), and the hook groove (211) and the triangular clamping block (221) are engaged with each other.

6. The integrated magnetic ring high-efficiency energy-saving automobile air-conditioning fan according to claim 1 is characterized in that: The thickness of the first rubber buffer gasket (5) is 2-5 mm, and the material is nitrile rubber; the thickness of the second rubber buffer gasket (6) is 1-3 mm, and the material is EPDM rubber.

7. The integrated magnetic ring high-efficiency energy-saving automobile air-conditioning fan according to claim 1 is characterized in that: The material of the integrated annular magnet (432) is neodymium iron boron.

8. The integrated magnetic ring high-efficiency energy-saving automobile air-conditioning fan according to claim 3 is characterized in that: The material of the oil-containing bearing (7) is copper-based powder metallurgy, and the material of the isolation baffle (8) is polytetrafluoroethylene.

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