Direct-current brushless fan with static pressure nozzle

Abstract

The utility model relates to a direct-current brushless fan with a static pressure nozzle. The direct-current brushless fan is characterized in that a direct-current brushless motor is connected with the fan; a plurality of static pressure nozzles are arranged on a volute of the fan; and the static pressure nozzle is communicated into the volute to balance the static pressure in the volute. A plurality of static pressure nozzles are arranged on the volute of the fan to limit the wind pressure and prevent the direct current brushless motor from being damaged due to overload of the wind pressure, so that the problems that in the use scene of an existing direct current brushless fan, an air duct of the direct current brushless fan is blocked, and in the use process of part of the direct current brushless fan, the service life of the direct current brushless fan is prolonged are solved. The technical problem that the direct-current brushless fan is damaged due to the fact that an existing direct-current brushless fan is not provided with a function of limiting the wind pressure when the output wind pressure needs to be limited to the maximum and the wind pressure is prevented from being overloaded in the prior art is solved.

Description

Technical Field

[0001] The embodiment of the utility model relates to a direct current brushless fan, in particular to a direct current brushless fan with a static pressure nozzle. Background Art

[0002] In the existing usage scenarios of DC brushless fans, there is a situation where the air duct of the DC brushless fan is blocked. In addition, during the use of some DC brushless fans, it is necessary to set a maximum limit on the output wind pressure to prevent wind pressure overload. The existing DC brushless fans do not have a function to limit the wind pressure, which leads to damage to the DC brushless fan. Utility Model Content

[0003] The purpose of the implementation mode of the utility model is to provide a DC brushless fan which can prevent damage due to wind pressure overload.

[0004] In order to achieve the above-mentioned purpose, the embodiment of the utility model designs a DC brushless fan with a static pressure nozzle, comprising:

[0005] Brushless DC motor;

[0006] A fan; the fan is connected to the brushless DC motor;

[0007] Static pressure nozzles: a plurality of static pressure nozzles are arranged on the volute of the fan; the static pressure nozzles are connected to the volute to balance the static pressure in the volute.

[0008] Furthermore, in the DC brushless fan with static pressure nozzles of the utility model, a plurality of the static pressure nozzles are arranged longitudinally or transversely on the volute according to the static pressure adjustment requirements.

[0009] Furthermore, in the brushless DC fan with static pressure nozzle of the utility model, the brushless DC motor further comprises:

[0010] Motor housing;

[0011] A magnetic ring, wherein the magnetic ring is arranged in the motor casing;

[0012] An upper end plate of the motor is arranged in the magnetic ring;

[0013] A stator core, the stator core being arranged on one side of the upper end plate of the motor;

[0014] A first bearing, wherein the first bearing is arranged in the upper end plate of the motor;

[0015] A rotating shaft, one end of which is fixed in the first bearing;

[0016] A rotor core, wherein the rotor core is riveted to the rotating shaft; the rotor core is arranged inside the magnetic ring;

[0017] A motor lower end plate, the outer side of the stator core is fixedly connected to the motor lower end plate;

[0018] A spring is arranged inside the lower end plate of the motor; the rotating shaft passes through the spring;

[0019] A driving plate, the driving plate is arranged on one side of the lower end plate of the motor;

[0020] A second bearing is disposed on the outer side of the lower end plate of the motor and on the rotating shaft;

[0021] Rubber plugs, a plurality of rubber plugs are arranged on the outer side of the lower end plate of the motor;

[0022] An end cover, fixedly connected to the lower end plate of the motor on the outer side of the rubber plug;

[0023] A gasket, the gasket is arranged in the end cover, and the rotating shaft passes through the gasket;

[0024] A heat dissipation fan is arranged on the outer side of the end cover and on the rotating shaft.

[0025] Furthermore, in the DC brushless blower with static pressure nozzle of the utility model, the heat dissipation fan is arranged between the DC brushless motor and the blower.

[0026] Further, in the DC brushless fan with static pressure nozzle of the utility model, the fan further includes:

[0027] A wind wheel is arranged in the volute, and the wind wheel is fixed on the rotating shaft of the DC brushless motor, and the DC brushless motor drives the rotating shaft to rotate.

[0028] Compared with the prior art, the implementation method of the utility model adopts the method of connecting the fan to a brushless DC motor; setting a plurality of static pressure nozzles on the volute of the fan; the static pressure nozzles are connected to the volute to balance the static pressure in the volute. By setting a plurality of static pressure nozzles on the volute of the fan, the wind pressure is limited to prevent the brushless DC motor from being damaged by wind pressure overload, and the problem of the DC brushless fan air duct being blocked in the use scenario of the existing brushless DC fan is solved. In addition, during the use of some brushless DC fans, the output wind pressure needs to be limited to the maximum to prevent wind pressure overload. The existing brushless DC fan does not have the function of limiting wind pressure, which leads to the technical problem of damage to the brushless DC fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0030] Figure 2 for Figure 1 Schematic diagram of the explosion structure;

[0031] Figure 3 It is a structural schematic diagram of the brushless DC motor of the present utility model. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0033] The embodiment of the utility model relates to a DC brushless fan with a static pressure nozzle, such as Figure 1 , Figure 2 , Figure 3 As shown, including:

[0034] The DC brushless motor 100 in this embodiment serves as a driving motor for the DC brushless fan with a static pressure nozzle in this embodiment, and plays a driving role;

[0035] The fan 200 is connected to the brushless DC motor 100 ; the fan 200 mainly provides wind pressure.

[0036] A plurality of static pressure nozzles 3 are arranged on the volute 1 of the fan; the static pressure nozzles 3 are connected to the volute 1 to balance the static pressure in the volute 1. The static pressure nozzles 3 mainly play the role of limiting the wind pressure to prevent the DC brushless motor from being damaged due to wind pressure overload, and solve the problem that the air duct of the DC brushless fan is blocked in the use scenario of the existing DC brushless fan, and that during the use of some DC brushless fans, the output wind pressure needs to be limited to the maximum to prevent wind pressure overload. The existing DC brushless fan does not have the function of limiting wind pressure, which leads to the technical problem of damage to the DC brushless fan.

[0037] In order to achieve the above technical effects, in the DC brushless fan with static pressure nozzle of this embodiment, as Figure 1 , Figure 2 , Figure 3As shown, according to the static pressure regulation requirements, a plurality of static pressure nozzles 3 are arranged longitudinally or transversely on the volute 1. In this embodiment, two are provided. Generally, the wind pressure can be limited to 0.05Mpa if arranged transversely; and 0.025Mpa if arranged longitudinally.

[0038] In order to achieve the above technical effects, in the DC brushless fan with static pressure nozzle of this embodiment, as Figure 1 , Figure 2 , Figure 3 As shown, the brushless DC motor 100 further includes:

[0039] The motor housing 17 is a part of the housing of the brushless DC motor 100;

[0040] A magnetic ring 16 is arranged in the motor housing 17; the magnetic ring 16 provides magnetic flux.

[0041] The motor upper end plate 15 is arranged in the magnetic ring 16; the motor upper end plate 15 serves as the upper end cover of the DC brushless motor 100;

[0042] A stator core 14 is disposed on one side of the motor upper end plate 15; the stator core 14 also provides magnetic flux;

[0043] A first bearing 13 is disposed in the upper end plate 15 of the motor; the first bearing 13 and the second bearing 7 are used to support the rotating shaft 10 .

[0044] One end of the rotating shaft 10 is fixed in the first bearing 13;

[0045] The rotor core 18 is riveted to the rotating shaft 10 ; the rotor core 18 is arranged inside the magnetic ring 16 ; the rotor core 18 is used for excitation.

[0046] The outer side of the stator core 14 is fixedly connected to the motor lower end plate 11;

[0047] A spring 12 is arranged inside the lower end plate 11 of the motor; the rotating shaft 10 passes through the spring 12; the spring 12 is used for shock absorption;

[0048] A driving board 9 is provided on one side of the motor lower end plate 11; the driving board 9 is used to control the speed and excitation of the DC brushless motor 100;

[0049] A second bearing 7 is provided on the rotating shaft 10 on the outer side of the motor lower end plate 11;

[0050] A plurality of rubber plugs 8 are arranged on the outer side of the motor lower end plate 11; the rubber plugs 8 mainly play the role of shock absorption;

[0051] The end cover 5 is fixedly connected to the motor lower end plate 11 on the outer side of the rubber plug 8; the end cover 5 serves as the end cover of the heat dissipation fan;

[0052] A gasket 6 is arranged inside the end cover 5, and the rotating shaft 10 passes through the gasket 6; the gasket 6 is used to isolate the cooling fan 4,

[0053] On the outer side of the end cover 5, a cooling fan 4 is arranged on the rotating shaft 10. The cooling fan 4 is used to dissipate heat for the entire brushless DC motor 100.

[0054] In order to achieve the above technical effects, in the DC brushless fan with static pressure nozzle of this embodiment, as Figure 1 , Figure 2 , Figure 3 As shown, the cooling fan 4 is arranged between the brushless DC motor 100 and the blower 200 .

[0055] In order to achieve the above technical effects, in the DC brushless fan with static pressure nozzle of this embodiment, as Figure 1 , Figure 2 , Figure 3 As shown, the fan 200 further includes:

[0056] The wind wheel 2 is arranged in the volute 1, and the wind wheel 2 is fixed on the rotating shaft 10 of the DC brushless motor 100. The DC brushless motor 100 drives the rotating shaft 10 to rotate.

[0057] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A DC brushless fan with a static pressure nozzle, characterized in that: include: A brushless DC motor (100); A fan (200); the fan (200) is connected to the brushless DC motor (100); Static pressure nozzles (3), a plurality of static pressure nozzles (3) are arranged on the volute (1) of the fan; the static pressure nozzles (3) are connected to the volute (1) to balance the static pressure in the volute (1).

2. The DC brushless fan with static pressure nozzle according to claim 1, characterized in that: According to the static pressure regulation requirements, a plurality of static pressure nozzles (3) are arranged longitudinally or transversely on the volute (1).

3. The DC brushless fan with static pressure nozzle according to claim 1, characterized in that: The brushless DC motor (100) further comprises: Motor housing (17); A magnetic ring (16), wherein the magnetic ring (16) is arranged in the motor housing (17); A motor upper end plate (15), wherein the motor upper end plate (15) is arranged in the magnetic ring (16); A stator core (14), the stator core (14) being arranged on one side of the upper end plate (15) of the motor; A first bearing (13), wherein the first bearing (13) is arranged in the upper end plate (15) of the motor; A rotating shaft (10), one end of which is fixed in the first bearing (13); a rotor core (18), wherein the rotor core (18) is riveted to the rotating shaft (10); the rotor core (18) is arranged inside the magnetic ring (16); A motor lower end plate (11), the outer side of the stator core (14) being fixedly connected to the motor lower end plate (11); A spring (12), wherein the spring (12) is arranged inside the lower end plate (11) of the motor; the rotating shaft (10) passes through the spring (12); A driving plate (9), the driving plate (9) being arranged on one side of the lower end plate (11) of the motor; A second bearing (7), which is disposed on the outer side of the lower end plate (11) of the motor and on the rotating shaft (10); A rubber plug (8), wherein a plurality of the rubber plugs (8) are arranged on the outer side of the motor lower end plate (11); An end cover (5) is fixedly connected to the motor lower end plate (11) on the outer side of the rubber plug (8); A gasket (6), wherein the gasket (6) is disposed inside the end cover (5), and the rotating shaft (10) passes through the gasket (6); A heat dissipation fan (4) is arranged on the outer side of the end cover (5) and on the rotating shaft (10).

4. The DC brushless fan with static pressure nozzle according to claim 3, characterized in that: The heat dissipation fan (4) is arranged between the brushless DC motor (100) and the blower (200).

5. The DC brushless fan with static pressure nozzle according to claim 1, characterized in that: The fan (200) further comprises: A wind wheel (2) is arranged in the volute (1), and the wind wheel (2) is fixed on the rotating shaft (10) of the DC brushless motor (100). The DC brushless motor (100) drives the rotating shaft (10) to rotate.

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