TWM572099U - Ceiling fan forced heat dissipation structure - Google Patents

Abstract

The present invention discloses a ceiling fan forced heat dissipation structure, which mainly comprises an external rotation motor for a ceiling fan, a plurality of blades arranged in a plane-like arrangement on the external rotation motor, and a lamp combined with the external rotation motor; the external rotation motor The inside of the outer casing is provided with a stator and a rotor, and the rotor and the outer casing are rotated by the stator, and the outer casing is provided with a plurality of first ventilation through holes connected to the inside of the outer casing; The fan blade has an inner pipe for circulating air, and the inner end is provided with a second venting through hole communicating with the inner pipe. When the inner end of the blade is fixed to the outer casing, the second venting through hole and the first Breathable through hole anastomosis. Thereby, through the high-speed tangential speed of the outer end of the blade, the fan blade has a phenomenon of pumping air from the outer side of the outer casing, and the heat inside the outer casing is extracted, and is discharged through the first and second venting through holes and the inner pipe.

Description

Ceiling fan forced heat dissipation structure

The present invention relates to a forced cooling structure of a ceiling fan, and more particularly to a forced cooling structure of a ceiling fan that extracts hot air inside a motor by a high-speed rotation of a blade.

The DC brushless motor (BLDC Motor) used in today's ceiling fans uses a strong permanent magnet (such as a neodymium iron boron magnet) to generate a magnetic field, but the working temperature of the permanent magnet cannot be too high, otherwise the high temperature operating temperature It will cause its magnetic weakening (a certain degree of degaussing), causing the power of the ceiling fan to drop. For this reason, the conventional technology uses passive heat dissipation, that is, a plurality of heat dissipation fins are integrally formed in the motor casing, and the heat dissipation efficiency of the motor is improved by the material (for example, aluminum alloy) and the area of the heat dissipation fin. However, the effect of the heat sink fins is still limited, especially for the industry's high-power DC brushless motor (BLDC Motor), the traditional passive heat sink technology can not meet its needs, and if you add other energy-consuming heat sink technology, it will not Meet the requirements of energy saving. Therefore, how to create a DC brushless motor that can be applied to a ceiling fan for forced heat dissipation, and does not need to consume additional energy, is a subject that the author has to actively overcome.

The purpose of the present invention is to provide a forced cooling structure for a ceiling fan, and the high-speed rotation of the blade leaves the hot air inside the motor, thereby achieving the purpose of forcibly dissipating heat from the ceiling fan motor.

In order to achieve the above object, the ceiling fan forced heat dissipation structure of the present invention comprises: an external rotation motor for the ceiling fan, and a plurality of blades arranged in a radial arrangement and having the inner end coupled to the outer rotation motor The external rotation motor has an outer rotation casing, and a center is disposed at a center of the outer casing, and a rotor is attached to an inner wall of the outer casing, and the stator drives the rotor to synchronously drive the outer rotation machine The shell rotates; the top of the outer casing has a plurality of blade fixing portions, and each of the blade fixing portions is provided with a first ventilation through hole communicating with the inside of the outer casing; the blade has a circulation for a strip of the inner tube of the air, the inner end of the blade is fixed to the blade fixing portion of the outer casing, and the blade is provided with a second venting through hole communicating with the inner pipe, the second venting The through hole coincides with the first venting through hole when the blade is fixed to the blade fixing portion.

In the forced cooling structure of the ceiling fan, a positioning sleeve is protruded from the edge of the first ventilation through hole, and the positioning sleeve is embedded in the second ventilation through hole of the blade.

In the above-mentioned ceiling fan forced heat dissipation structure, the outer casing is made of an aluminum-based alloy material, and has an annular side wall, a sealing end formed at an upper end of the annular side wall, and a sealing end end a central shaft hole for inserting a shaft center of the stator, an opening formed at the other end of the annular side wall, and a recess from the opening toward the end of the sealing wall for accommodating the stator and the rotor a chamber fixing portion is formed on the sealing end portion, and the first ventilation through hole penetrates the sealing end portion to communicate with the chamber.

In the above-mentioned ceiling fan forced heat dissipation structure, the blade fixing portion is provided with a plurality of first locking holes or locking posts for locking the blade; and the blade has a plurality of first locking holes with the blade fixing portion Or the lock cylinder is fitted with a second lock hole.

In the above-mentioned ceiling fan forced heat dissipation structure, the blade is a hollow aluminum extruded strip having an inner pipe connecting the two ends for circulating air.

In the forced cooling structure of the ceiling fan, a wing end plate is locked to the outer end of the fan blade, and the wing end plate is provided with an air guiding hole communicating with the inner pipe.

In the forced cooling structure of the ceiling fan, a fairing is disposed outside the air guiding hole.

The ceiling fan forced heat dissipation structure further includes a light fixture disposed under the outer turn housing.

In the above-mentioned ceiling fan forced heat dissipation structure, the lamp is an LED lamp.

The forced cooling structure of the ceiling fan is based on the principle of white effort "the smaller the fluid flow rate is, the smaller the pressure is." The high-speed tangential speed at the end of the blade causes the external pressure to be smaller than the inner tube pressure of the blade. The fan blade has a phenomenon of pumping air from the outside of the terminal end, so that the hot air accumulated in the inner chamber of the outer rotation housing of the outer rotation motor can pass through the first ventilation through hole, the second ventilation through hole and the inner pipe outward Pull out to achieve the effect of the ceiling fan motor to force heat dissipation.

The structural features and other functions and purposes of the present invention are described in detail below with reference to the accompanying drawings. Referring to FIG. 1 and FIG. 2, the first forced cooling structure of the ceiling fan is first. A preferred embodiment includes: an outer rotation motor 10 for use as a ceiling fan, and a plurality of blades radially arranged and having inner ends coupled to the blades 20 of the outer rotation motor 10; the outer rotation motor 10 is preferably A DC brushless motor (BLDC Motor) is mainly embodied with an outer casing 11 , and a center of the outer casing 11 is provided with a stator 16 (shown in FIG. 4 ) inside the outer casing 11 . A rotor (not shown) is attached to the inner wall, and the rotor is driven by the stator 16 to synchronously drive the rotation of the outer casing 11; in particular, the top of the outer casing 11 has a plurality of blade fixing portions 12, each of which The blade fixing portion 12 is provided with a first ventilation through hole 13 that communicates with the inside of the outer casing 11. The blade 20 is a strip having an inner duct 21 for circulating air, the inner end of the blade 20 is fixed to the blade fixing portion 12 on the outer casing 11, and the blade 20 is provided with a connection. a second venting through hole 22 is formed in the inner duct 21, and the second venting through hole 22 is matched with the first venting through hole 13 when the blade 20 is fixed to the blade fixing portion 12, thereby being able to constitute The ceiling fan forces the heat dissipation structure. Wherein, the hole edge of the first ventilation through hole 13 can be further convexly provided with a positioning sleeve 14 (as shown in FIG. 5), and the positioning sleeve 14 is fixed to the blade fixing portion 12 when the blade 20 is fixed. The second venting through hole 22 of the blade 20 is embedded to achieve complete adhesion, increased bonding strength and more convenient positioning and combination.

Referring to FIG. 1 and FIG. 2, the outer casing 11 is preferably a casing made of an aluminum-based alloy material, and has an annular side wall 111 and a seal formed on the upper end of the annular side wall 111. a wall end portion 112, a shaft hole 113 at the center of the sealing end portion 112 for inserting an axis of the stator 16, an opening 114 formed at the other end of the annular side wall 111, and a hole 114 from the opening 114 The sealing end portion 112 is recessed into a chamber 115 for accommodating the stator 16 and the rotor; and the blade fixing portion 12 is formed around the sealing end portion 112, and the blade fixing portion 12 is preferably integrated. Forming a structure that protrudes around the sealing end portion 112 and is arranged in a radial shape; the first venting through hole 13 extends through the sealing end portion 112 and communicates with the chamber 115 for discharging the chamber The heat inside 115. Moreover, the blade fixing portion 12 may be provided with a plurality of first locking holes 15 or lock cylinders for locking the blade 20, and the blade 20 is provided with a plurality of first and the blade fixing portions 12 The lock hole 15 or the lock cylinder is fitted with the second lock hole 23, whereby the blade 20 is locked to the blade fixing portion 12 by a fixing member such as a screw.

Referring to FIG. 2 and FIG. 3, the blade 20 is preferably embodied as a hollow aluminum extruded strip having an inner pipe 21 communicating the two ends for circulating air, and the blade 20 is provided. The outer end of the outer end can be further locked with a wing end plate 24, and the wing end plate 24 is provided with an air guiding hole 25 communicating with the inner pipe 21, and a fairing 26 is disposed outside the air guiding hole 25 to enclose the fairing 26 On the outer side of the air guiding hole 25, only one opening 261 facing the rear in the rotational direction is left. In addition, an end plug 27 can be inserted at the inner end of the inner pipe 21, so that the pressure difference phenomenon of the suction can be applied to the chamber 115.

Referring to FIG. 4 and FIG. 5, a second preferred embodiment of the forced cooling structure for the ceiling fan of the present invention is basically the same as the first embodiment, and only the blade fixing portion 12 is not protruded from the same. The sealing end 112 is directly recessed on the sealing end 112, and the blade fixing portion 12 is similarly configured with a first venting through hole 13 and a positioning sleeve 14 which can be combined with the blade 20 described above. The second venting through holes 22 are matched. Furthermore, referring to FIG. 1 and FIG. 4, the preferred embodiment of the present invention further includes a luminaire 30 disposed under the outer casing 11, the luminaire 30 being an existing halogen luminaire 31 or As shown in FIG. 4 , the LED lamp 32 mainly includes an LED substrate 321 , a heat dissipation fin 322 coupled to the back surface of the LED substrate 321 , and a lamp cover 323 for covering the LED substrate 321 . The LED substrate 321 and the heat dissipation fins 322 are modularized and loaded into the outer casing 11 , and the opening 114 of the lower end of the outer casing 11 is covered by the lamp cover 323 to rotate the original blade 20 . When the hot air is extracted, the heat of the heat radiating fins 322 can be pulled away.

The artificial ceiling fan forced heat dissipation structure, the technical principle is based on the principle of the white effort law "the greater the fluid flow rate is, the smaller the pressure", the higher the tangential speed of the end of the blade 20, the pressure ratio of the air guide hole 25 of the wing end plate 24 The inner duct 21 of the blade 20 has a small pressure, so that the fan blade 20 has a phenomenon of pumping air from the outside of the end, so that the hot air accumulated in the inner chamber 115 of the outer casing 11 of the outer motor 10 can be The first venting through hole 13, the second venting through hole 22 and the inner duct 21 are sucked out to the outer end of the blade 20, thereby achieving the effect of forcibly dissipating heat without using extra energy.

In summary, the forced cooling structure of the ceiling fan of this creation has been practical and creative, and its technical means are also novel and undoubted, and the efficacy and design purpose are in line with the fact that it has been reasonably improved. To this end, a new type of patent application is filed in accordance with the law, but the bureau is requested to give a detailed examination and grant the patent as a prayer.

10‧‧‧External motor

11‧‧‧External casing

111‧‧‧Ring side wall

112‧‧‧Cable end

113‧‧‧Axis hole

114‧‧‧ openings

115‧‧ ‧ room

12‧‧‧Face Leaf Fixing Department

13‧‧‧First breathable through hole

14‧‧‧ positioning casing

15‧‧‧First keyhole

16‧‧‧ Stator

20‧‧‧ fan leaves

21‧‧‧Inside pipeline

22‧‧‧Second breathable through hole

23‧‧‧Second keyhole

24‧‧‧wing end plate

25‧‧‧ Air vents

26‧‧ ‧ fairing

261‧‧‧ openings

27‧‧‧End plug

30‧‧‧Lights

31‧‧‧Holland lamps

32‧‧‧LED lamps

321‧‧‧LED substrate

322‧‧‧heat fins

323‧‧‧shade

1 is a perspective view of a first preferred embodiment of a forced cooling structure for a ceiling fan.

2 is a schematic exploded view of the first preferred embodiment of the forced cooling structure of the ceiling fan.

FIG. 3 is an exploded perspective view showing the outer end of the blade of the first preferred embodiment of the forced cooling structure of the ceiling fan.

4 is an exploded perspective view showing a second preferred embodiment of the forced cooling structure of the ceiling fan.

FIG. 5 is a schematic exploded view of the second preferred embodiment of the forced cooling structure of the ceiling fan.

Claims (9)

A ceiling fan forced heat dissipation structure comprising: an outer rotation motor for use as a ceiling fan, and a plurality of blades arranged in a radial arrangement and having an inner end coupled to the outer rotation motor; the outer rotation motor has an outer rotation housing a center of the outer casing of the outer casing, a rotor attached to the inner wall of the outer casing, the stator driving the rotor to synchronously drive the outer casing to rotate; the top of the outer casing has a plurality of blade fixing portions, each of the blade fixing portions is provided with a first ventilation through hole communicating with the inside of the outer casing; the blade is a strip having an inner pipe for circulating air, the blade The inner end is fixed to the blade fixing portion of the outer casing, and the blade is provided with a second ventilation through hole communicating with the inner pipe, and the second ventilation through hole is fixed to the blade at the blade The fixing portion is coincident with the first ventilation through hole. The ceiling fan forced heat dissipation structure according to claim 1, wherein a hole of the first ventilation through hole protrudes from a positioning sleeve, and the positioning sleeve is embedded in the second ventilation through hole of the blade. The ceiling fan forced heat dissipation structure according to claim 1 or 2, wherein the outer casing is a casing made of an aluminum-based alloy material, and has an annular side wall, and a sealing end formed at an upper end of the annular side wall a shaft hole in the center of the end portion of the sealing wall for inserting an axis of the stator, an opening formed at the other end of the annular side wall, and a recess from the opening toward the end of the sealing wall And a chamber for accommodating the stator and the rotor; the blade fixing portion is formed on the sealing end, and the first venting through hole extends through the sealing end to communicate with the chamber. The ceiling fan forced heat dissipation structure according to claim 3, wherein the blade fixing portion is provided with a plurality of first locking holes or locking posts for locking the blade; and the plurality of blades are fixed to the blade The first locking hole or the locking post is adapted to the locking second locking hole. The ceiling fan forced heat dissipation structure according to claim 1 or 2, wherein the blade is a hollow aluminum extruded strip having an inner pipe communicating the two ends for circulating air. The ceiling fan forced heat dissipation structure according to claim 5, wherein the outer end of the blade is locked with a wing end plate, and the wing end plate is provided with an air guiding hole communicating with the inner pipe. The ceiling fan forced heat dissipation structure according to claim 6, wherein a fairing is disposed outside the air guiding hole. The ceiling fan forced heat dissipation structure according to claim 1, further comprising a lamp disposed under the outer casing. The ceiling fan forced heat dissipation structure according to claim 8, wherein the luminaire is an LED luminaire.