CN212055218U - A new type of fan impeller and a coaxial double-head fan using the same - Google Patents

Abstract

The utility model provides a novel fan impeller and a coaxial double-head fan using the fan impeller. The fan blades of the fan impeller are composed of a main fan blade and an auxiliary fan blade. The blade surface of the fan blade forms an angle. When the fan impeller rotates, it can supply air to the front and the peripheral side at the same time. The two new fan impellers with opposite inclination directions of the main fan blades are respectively installed on the two ends of the dual-shaft output motor. The shaft double-head fan uses the same motor to drive the new fan impellers on both sides to rotate at the same time, and then the fan head is controlled by the fan shaking mechanism to reciprocate and shake its head within a certain angle range, so that the air can be supplied in all directions in all directions. The coaxial double-head fan has a simple structure, good long-term operation stability, and low manufacturing cost, and can be directly modified with an existing fan, which is very beneficial to popularization and application.

Description

A new type of fan impeller and a coaxial double-head fan using the same

technical field

The utility model relates to a novel fan impeller and a coaxial double-head fan using the fan impeller, belonging to the technical field of household appliances.

Background technique

At present, most of the domestic or industrial fans on the market are unidirectional air supply fans equipped with a swinging device. Due to the limited swing of the swinging mechanism, it cannot supply air in all directions in all directions. Multiple fans are placed to meet the requirements of all-round air supply, but the efficiency is low; in the case of a relatively narrow environment, because more fans cannot be placed, the air supply conditions will be limited, and the all-round air supply cannot be satisfied. demand. In order to solve the problem of low efficiency of one-way air supply fans and inability to supply air in all directions in all directions, I provide a coaxial two-way air supply fan that can rotate 360° in Chinese patent CN 201920362306.X. In the scheme, in order to realize the 360° rotation of the fan head on the upper end of the support, the upper and lower conductive plates are used to conduct electricity and the thrust bearing is used as the support. The connection of the whole structure is relatively complicated, the stability of long-term operation is insufficient, and there are many parts and components. The cost is high, which is not conducive to promotion and use.

For this reason, I have improved the blade structure of the conventional fan impeller, so that the fan impeller can supply air to the front and the peripheral side at the same time when it rotates. I use this new type of fan impeller to build a coaxial double-head fan, and the fan head only needs to be in the conventional fan. Shake the head back and forth under the control of the shaking mechanism, which can achieve all-round air supply in all directions.

Utility model content

The purpose of the utility model is to provide a novel fan impeller and a coaxial double-head fan using the fan impeller. In order to realize this purpose, the concrete technical scheme that the utility model adopts is:

A new type of fan impeller is provided with a hub in the center, and a group of main fan blades extending radially and having a blade inclination are evenly distributed on the outer circumference of the hub; There is also a group of radially extending auxiliary fan blades evenly distributed on the outer circumference, each auxiliary fan blade corresponds to a main fan blade, and the blade surface of each auxiliary fan blade corresponds to its corresponding main fan blade in position. The surface forms an included angle; each auxiliary fan blade is connected with its corresponding main fan blade as a whole or maintains a space. The included angle at the intersection is 10-90°. When the auxiliary fan blade and the main fan blade are kept at a distance, the included angle between the auxiliary fan blade blade surface and the main fan blade blade surface at the extension intersection is 10-90° .

A coaxial double-headed fan using the above-mentioned novel fan impeller, the fan head is only provided with a motor in the middle, and the two ends of the main shaft of the motor respectively protrude outward from the front and rear sides of the motor, thereby forming a double-shaft output motor; the motor; One of the new-type fan impellers is installed on the output shafts on both sides of the front and rear, the inclination angles of the main blades of the two fan impellers are opposite, and the outer parts of the two fan impellers are provided with protective covers; the lower part of the fan head is provided with a support , the fan head is rotatably supported on the support; the outside of the motor is provided with a head cover, and the inside of the head cover is also provided with a fan shaking mechanism for controlling the fan head to reciprocate and shake its head.

The motor can be an existing dual-shaft output motor suitable for driving fans, or a conventional single-shaft output motor suitable for driving fans can be formed by butt-welding a section of output shaft extending backward at the rear end of its main shaft.

The fan shaking mechanism adopts the shaking control mechanism used by conventional fans, which includes setting a section of worm on the shaft of the motor main shaft, one side of the worm is provided with a vertical rotation control shaft, and the middle of the rotation control shaft is provided with a worm. The meshing worm gear, the upper end of the rotary control shaft is connected to the shaking control rod, and the rotary control shaft is also provided with a pinion below the worm wheel; one side of the rotary control shaft is provided with a vertical shaft, and the upper part of the rotary shaft is provided with a pinion meshing with The lower end of the rotating shaft is fixedly connected to one end of the crank, the other end of the crank is hinged with one end of the connecting rod, and the other end of the connecting rod is hinged on the support.

The fan blades of the new fan impeller are composed of main fan blades and auxiliary fan blades, and the blade surfaces of each auxiliary fan blade respectively form an included angle with the corresponding main fan blade blade surface. Side air supply, two new fan impellers with opposite inclination directions of the main fan blades are respectively installed on the two ends of the double shaft output motor to form a coaxial double head fan. The shaking mechanism controls the fan head to reciprocate and shake its head within a certain angle range, so as to supply air in all directions in all directions. The coaxial double-head fan has a simple structure, good long-term operation stability, and low manufacturing cost, and can be directly modified with an existing fan, which is very beneficial to popularization and application.

Description of drawings

Figure 1 is a schematic diagram of the three-dimensional structure of the new fan impeller.

FIG. 2 is a top view of FIG. 1 .

FIG. 3 is a three-dimensional schematic diagram of a coaxial double-head fan using the novel fan impeller.

Figure 4 is a perspective view of the fan head (with the protective cover removed) and the support of the coaxial double-head fan.

FIG. 5 is a front view of FIG. 4 .

FIG. 6 is a schematic diagram of the fan shaking mechanism in the nose cover.

In the picture: 1-fan impeller, 2-hub, 3-main blade, 4-auxiliary blade, 5-fan head, 6-motor, 7-protective cover, 8-support, 9-head cover, 10 - Worm, 11- Rotary Control Shaft, 12- Worm Gear, 13- Toggle Control Rod, 14- Pinion, 15- Rotary Shaft, 16- Big Gear, 17- Crank, 18- Connecting Rod.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1-2, the center of the fan impeller 1 of the present invention is provided with a hub 2, and a group of main fan blades 3 extending radially and having a blade inclination are evenly distributed on the outer circumference of the hub 2; the main fan blades 3 It is a plane fan blade or a curved fan blade, and a group of radially extending auxiliary fan blades 4 are evenly distributed on the outer circumference of the hub 2. The blade surfaces of each auxiliary fan blade 4 respectively form an included angle with the blade surface of the corresponding main fan blade 3; When connected to the main fan blade 3 as a whole, the included angle between the blade surface of the auxiliary fan blade 4 and the blade surface of the main fan blade 3 at the intersection is 10-90°. When the auxiliary fan blade 4 and the main fan blade 3 keep a gap , the included angle between the blade surface of the auxiliary fan blade 4 and the blade surface of the main fan blade 3 at the extension intersection is 10-90°. The fan impeller shown in FIGS. 1-2 is a situation in which the auxiliary fan blade 4 and the main fan blade 3 are connected into one body, and the included angle at the intersection of the blade surfaces of the two fan blades is 90°.

As shown in Figure 3-5, the fan head 5 of the coaxial double-head fan has only one motor 6 in the middle, and the two ends of the main shaft of the motor 6 protrude outward from the front and rear sides of the motor 6 respectively, thus forming a double shaft Output motor; a new type of fan impeller 1 is installed on the output shafts on the front and rear sides of the motor 6, the two fan impellers 1 have opposite directions of blade inclination of the main fan blades 2, and the outside of the two fan impellers 1 are provided with protective covers 7; a support 8 is provided below the fan head 5, and the fan head 5 is rotatably supported on the support 8; the outer side of the motor 6 is provided with a head cover 9, and the head cover 9 is also provided with a control fan head 5 to shake its head back and forth. Fan shaking mechanism.

The motor 6 can be an existing dual-shaft output motor suitable for driving fans, or a conventional single-shaft output motor suitable for driving fans can be formed by butt welding a section of output shaft extending backwards at the rear end of its main shaft.

As shown in FIG. 6, the fan swing mechanism adopts the swing control mechanism used by conventional fans, which includes a section of worm 10 arranged on the shaft of the main shaft of the motor 6, and a vertical rotation control shaft 11 is arranged on one side of the worm 10. , the middle of the rotation control shaft 11 is provided with a worm wheel 12 that meshes with the worm 10, the upper end of the rotation control shaft 11 is connected to the rocking control rod 13, and the rotation control shaft 11 is also provided with a pinion 14 below the worm wheel 12; One side is provided with a vertical rotating shaft 15, the upper part of the rotating shaft 15 is provided with a large gear 16 meshing with the pinion 14, the lower end of the rotating shaft 15 is fixedly connected to one end of the crank 17, and the other end of the crank 17 is movable with one end of the connecting rod 18 Hinged, the other end of the connecting rod 18 is hinged on the support 8 .

When the coaxial double-head fan is working, the motor 6 drives the fan impellers 1 on the front and rear sides to rotate at the same time. When the fan head 5 remains stationary, the air supply along the peripheral side of the middle of the motor 6 is slightly weaker, and when the fan shaking mechanism controls the fan head 5 to reciprocate and shake its head within a certain angle range, it can move the air in all directions. Azimuth air supply.

In addition, the novel fan impeller 1 of the present invention can also be directly applied to a conventional single-head fan, so as to supply air to the front and the peripheral side of the fan at the same time.

The above-mentioned illustrations are only typical embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications or equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in the present utility model. within the scope of protection.

Claims (5)

1. The utility model provides a novel fan impeller, characterized by: the center of the fan impeller is provided with a hub, and a group of main blades which radially extend out and have blade inclination angles are uniformly distributed on the outer circumference of the hub; the main fan blade is a plane fan blade or a curved surface fan blade, a group of auxiliary fan blades extending out in the radial direction are uniformly distributed on the circumference of the outer side of the hub, each auxiliary fan blade corresponds to one main fan blade, and each auxiliary fan blade surface forms an included angle with the corresponding main fan blade surface on the position; each auxiliary fan blade is respectively connected with the corresponding main fan blade into a whole or keeps an interval, when the auxiliary fan blade is connected with the main fan blade into a whole, the included angle of the blade surface of the auxiliary fan blade and the blade surface of the main fan blade at the intersection position is 10-90 degrees, and when the auxiliary fan blade and the main fan blade keep an interval, the included angle of the blade surface of the auxiliary fan blade and the blade surface of the main fan blade at the extension intersection position is 10-90 degrees.

2. A coaxial double-ended fan using the novel fan impeller of claim 1, characterized in that: the fan head of the coaxial double-head fan is only provided with one motor in the middle, and two ends of a main shaft of the motor respectively extend out from the front side and the rear side of the motor, so that a double-shaft output motor is formed; the novel fan impellers are respectively installed on the output shafts on the front side and the rear side of the motor, the blade inclination angles of the main blades of the two fan impellers are opposite in direction, and protective covers are arranged outside the two fan impellers; a support is arranged below the fan head, and the fan head is rotatably supported on the support; the outer side of the motor is provided with a head cover, and a fan head shaking mechanism for controlling the fan head to shake head in a reciprocating manner is also arranged in the head cover.

3. The coaxial double-ended fan of claim 2, wherein: the motor adopts the existing double-shaft output motor suitable for driving the fan.

4. The coaxial double-ended fan of claim 2, wherein: the motor is formed by welding a section of a rearwardly extending output shaft to the tail end of its main shaft by a conventional single shaft output motor adapted to drive a fan.

5. The coaxial double-ended fan of claim 2, wherein: the fan oscillating mechanism adopts an oscillating control mechanism used by a conventional fan, and comprises a section of worm arranged on a shaft lever of a motor main shaft, a vertical rotary control shaft arranged on one side of the worm, a worm wheel meshed with the worm arranged in the middle of the rotary control shaft, an oscillating control pull rod connected with the upper end of the rotary control shaft, and a pinion arranged below the worm wheel on the rotary control shaft; one side of the rotary control shaft is provided with a vertical rotating shaft, the upper part of the rotating shaft is provided with a big gear meshed with the small gear, the lower end of the rotating shaft is fixedly connected with one end of a crank, the other end of the crank is movably hinged with one end of a connecting rod, and the other end of the connecting rod is movably hinged on the support.

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