CN202091226U

CN202091226U - Double-fan structure

Info

Publication number: CN202091226U
Application number: CN2011201953603U
Authority: CN
Inventors: 张龙雨
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-13
Filing date: 2011-06-13
Publication date: 2011-12-28
Anticipated expiration: 2021-06-13

Abstract

The utility model relates to the technical field of fan, in particular to a double-fan structure, comprising a frame with a central pillar, a first bearing, a stator, a rotor, and a first impeller, wherein the rotor comprises a first rotary shaft; a second impeller located below the first impeller, a second rotary shaft coaxial with the first rotary shaft, and a gear transmission device are disposed on the frame; the second impeller is connected to the lower end of the second rotary shaft; and the lower end of the first rotary shaft is connected with the upper end of the second rotary shaft in a driving way via the gear transmission device; in the utility model, the motor consisting of the stator and the rotor drives the first impeller and the first rotary shaft to rotate and meanwhile the first rotary shaft drives the second rotary shaft and the second impeller to rotate via the gear transmission device. In the utility model, the first and second impellers are driven to rotate simultaneously by only one motor so that the double-fan structure has a simple structure, saves the cost and has stable and reliable transmission; two impellers rotate simultaneously to strengthen air quantity and air pressure to generate strong air flow so as to dissipate heat rapidly and the double-fan structure is small in volume.

Description

Double fans structure

Technical field:

The utility model relates to the fan technical field, refers in particular to double fans structure.

Background technique:

Fan is a kind of electrical equipment that is used to dispel the heat, and it utilizes the rotation of electric energy drives impeller to produce wind, goes near the air fast heat being blown to, and reaches cool effect.Because development of science and technology, the element level of integration significantly improves, and the heat that makes electronic component produce increases, and is if will make electronic component keep operating temperature, very important to the design of heat radiation.

At present, fan generally all is the single impeller structure, wind-force is not powerful, air quantity is little, mainly by improving rotation speed of the fan or increase fan dimension reaching the requirement that improves fan performance, but rotation speed of the fan improves and can increase noise, and fan dimension increases can increase the fan volume again, thereby stressing light, thin, short, little today, must there be the radiation fan of high-performance small volume to match.

The model utility content:

The purpose of this utility model is exactly to provide the double fans structure that a kind of wind-force is powerful, air quantity is big, volume is little at the deficiency of prior art existence.

To achieve these goals, the technical solution adopted in the utility model is: double fans structure, it includes the framework with center pillar, be contained in intrastelar clutch shaft bearing, be sheathed on extra-stelar stator, the rotor that is supported by clutch shaft bearing rotatably, be socketed in the first outer impeller of rotor, rotor includes first rotating shaft, framework is provided with second impeller that is positioned at first impeller below, second rotating shaft with the first rotating shaft concentric, gear drive, second impeller is connected the second rotating shaft lower end, and the first rotating shaft lower end drives by gear drive and connects second rotating shaft upper end.

Described gear drive includes base that the ring gear that is fixed on the framework, the rotation seat that is socketed in the first rotating shaft lower end, lid be located at the ring gear bottom, is located at the driving gear in the ring gear, driving gear is socketed in second rotating shaft upper end, evenly be provided with a plurality of planetary pinions between driving gear and the ring gear, each planetary pinion meshes with driving gear and ring gear respectively, the bottom of rotation seat is provided with a plurality of bearing pins corresponding with planetary pinion, and each planetary pinion rotating sleeve respectively is located on the bearing pin.

Described planetary pinion is three.

Be rotationally connected by second bearing between described second rotating shaft and the base.

Described clutch shaft bearing is two.

Described first impeller is opposite with the direction blade of second impeller.

The utility model beneficial effect is: the double fans structure that the utility model provides, it includes the framework with center pillar, clutch shaft bearing, stator, rotor, first impeller, rotor includes first rotating shaft, framework is provided with second impeller that is positioned at first impeller below, second rotating shaft with the first rotating shaft concentric, gear drive, second impeller is connected the second rotating shaft lower end, the first rotating shaft lower end drives by gear drive and connects second rotating shaft upper end, the utility model passes through by stator, the motor that rotor constitutes drives first impeller and first rotating shaft rotation, first rotating shaft simultaneously drives second rotating shaft and the rotation of second impeller by gear drive, the utility model only just drives the rotation of first impeller and second impeller simultaneously by a motor, simple in structure, save cost, stable drive is reliable, two impellers rotate simultaneously and can make air quantity and blast enhancing and produce powerful distinguished and admirable, can fast heat energy be distributed, guarantee to have smaller size smaller under the high performance prerequisite.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a sectional view of the present utility model.

Fig. 3 is a decomposing schematic representation of the present utility model.

Embodiment:

Below in conjunction with accompanying drawing the utility model is further described, see shown in Fig. 1～3, the utility model includes the framework 1 with center pillar 11, be contained in two clutch shaft bearings 2 in the center pillar 11, be sheathed on the stator 3 outside the center pillar 11, the rotor 4 that is supported by clutch shaft bearing 2 rotatably, be socketed in first impeller 5 outside the rotor 4, rotor 4 includes first rotating shaft 6, framework 1 is provided with second impeller 7 that is positioned at first impeller, 5 belows, second rotating shaft 8 with first rotating shaft, 6 concentrics, gear drive 9, second impeller 7 is connected second rotating shaft, 8 lower ends, and first rotating shaft, 6 lower ends drive by gear drive 9 and connect second rotating shaft, 8 upper ends.The utility model drives first impeller 5 and first rotating shaft, 6 rotations by the motor that is made of stator 3, rotor 4, and first rotating shaft 6 simultaneously drives second rotating

shaft

8 and 7 rotations of second impeller by gear drive 9.The utility model only just drives

first impeller

5 and 7 rotations of second impeller simultaneously by a motor, simple in structure, save cost, stable drive is reliable, two impellers rotate simultaneously and can make air quantity and blast enhancing and produce powerful distinguished and admirable, can fast heat energy be distributed, guarantee to have smaller size smaller under the high performance prerequisite.

Gear drive 9 includes the ring gear 91 that is fixed on the framework 1, be socketed in the rotation seat 92 of first rotating shaft, 6 lower ends, lid is located at the base 93 of ring gear 91 bottoms, be located at the driving gear 94 in the ring gear 91, driving gear 94 is socketed in second rotating shaft, 8 upper ends, evenly be provided with three planetary pinions 95 between driving gear 94 and the ring gear 91, each planetary pinion 95 meshes with driving gear 94 and ring gear 91 respectively, the bottom of rotation seat 92 is provided with three bearing pins 921 corresponding with planetary pinion 95, each planetary pinion 95 rotating sleeve respectively is located on the bearing pin 921, and first rotating shaft 6 can drive second rotating shaft 8 by gear drive 9 and rotate in the same way.Gear drive 9 is realized being in transmission connection between first rotating shaft 6 and second bearing 96 by planetary pinion 95, can keep rotational structure and fully locate, and stable drive is reliable, effectively reduces noise.Be rotationally connected by second bearing 96 between second rotating shaft 8 and the base 93, transmission is more steady.First impeller 5 is opposite with the direction blade of second impeller 7, can make distinguished and admirable stronger.

Certainly, the above only is a better embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.

Claims

1. double fans structure, it includes the have center pillar framework (1) of (11), be contained in the clutch shaft bearing (2) in the center pillar (11), be sheathed on the outer stator (3) of center pillar (11), rotatably by the rotor (4) of clutch shaft bearing (2) support, be socketed in outer first impeller (5) of rotor (4), rotor (4) includes first rotating shaft (6), it is characterized in that: described framework (1) is provided with second impeller (7) that is positioned at first impeller (5) below, second rotating shaft (8) with first rotating shaft (6) concentric, gear drive (9), second impeller (7) is connected second rotating shaft (8) lower end, and first rotating shaft (6) lower end drives by gear drive (9) and connects second rotating shaft (8) upper end.

2. double fans structure according to claim 1, it is characterized in that: described gear drive (9) includes the ring gear (91) that is fixed on the framework (1), be socketed in the rotation seat (92) of first rotating shaft (6) lower end, lid is located at the base (93) of ring gear (91) bottom, be located at the driving gear (94) in the ring gear (91), driving gear (94) is socketed in second rotating shaft (8) upper end, evenly be provided with a plurality of planetary pinions (95) between driving gear (94) and the ring gear (91), each planetary pinion (95) meshes with driving gear (94) and ring gear (91) respectively, the bottom of rotation seat (92) is provided with a plurality of bearing pins (921) corresponding with planetary pinion (95), and each planetary pinion (95) rotating sleeve respectively is located on the bearing pin (921).

3. double fans structure according to claim 2 is characterized in that: described planetary pinion (95) is three.

4. double fans structure according to claim 2 is characterized in that: be rotationally connected by second bearing (96) between described second rotating shaft (8) and the base (93).

5. double fans structure according to claim 1 is characterized in that: described clutch shaft bearing (2) is two.

6. according to any described double fans structure of claim 1～5, it is characterized in that: described first impeller (5) is opposite with the direction blade of second impeller (7).