CN108105130A - fan - Google Patents

Abstract

The invention discloses a fan and belongs to the technical field of fans. The blower solves the problem that the original small-size blower cannot generate a large air volume. The fan includes a casing and a motor fixed in the casing. The motor includes a casing. A first stator and a second stator are respectively arranged at both ends of the casing. A first rotor is arranged in the first stator, and a first rotor is arranged in the second stator. A second rotor is provided; the first rotor includes a first rotating shaft, the end of the first rotating shaft protrudes from the housing, the second rotor includes a second rotating shaft, the end of the second rotating shaft extends out of the housing, and the end of the first rotating shaft A first fan blade is fixed, and a second fan blade is fixed at the end of the second rotating shaft. The blower is provided with two motor structures in one shell of the motor, on the one hand, it can make the blower run stably, and on the other hand, it also enables a smaller blower to generate a larger air volume.

Description

fan

technical field

The invention belongs to the technical field of fans and relates to a fan.

Background technique

The motor in the traditional fan has a single-axis structure, and the application scenario is single-power and single-rotation output. This kind of motor is applied to the fan, which may easily cause eccentric force during the operation of the fan, which makes the fan run unstable. At the same time, this kind of fan is also There is a problem of small air volume.

Contents of the invention

The object of the present invention is to propose a fan with a large air volume in view of the above-mentioned problems in the prior art.

The purpose of the present invention can be achieved through the following technical solutions:

The fan includes a casing and a motor fixed in the casing, wherein the motor includes a casing, and the two ends of the casing are respectively provided with a first stator and a second stator, and the first A first rotor is provided in the stator, and a second rotor is provided in the second stator; the first rotor includes a first rotating shaft, and the end of the first rotating shaft protrudes from the housing, and the The second rotor includes a second rotating shaft, the end of the second rotating shaft protrudes from the casing, the end of the first rotating shaft is fixed with the first blade, and the end of the second rotating shaft is fixed with the first Two leaves.

In this fan, two motor structures are arranged in one housing of the motor. In an application scenario, the rotation direction of the first rotor is opposite to that of the second rotor, so that when the motor is running, the first rotor rotates The eccentric force generated after the rotation of the second rotor offsets the eccentric force generated by the second rotor, so that the motor runs more stably.

When the air passes through the first fan blade, the air pressure increases, and the pressurized air passes through the second fan blade, and the air pressure becomes larger, thereby increasing the air volume of the fan. In addition, since the two motors are arranged in the axial direction, the radial dimension of the motor is kept small while increasing the power of the motor, avoiding the motor from occupying too much space in the fan casing, ensuring smooth flow of air in the fan casing, and at the same time This enables a small-sized fan to generate a large air volume.

In the fan described above, a handle is fixed on the casing, and a baffle is fixed on the casing, and the baffle divides the space between the handle and the casing into a first space and a second space, and the A switch is arranged on the handle, and the switch is located in the first space.

The setting of the handle is convenient for the user to carry or move the fan. Because the baffle is arranged at the handle, it is difficult for the user to touch the switch when reaching into the second space to hold the handle, thereby ensuring that the switch of the fan is not easy to touch by mistake, making the use of the fan safer. In addition, since the switch is located between the handle and the shell, the handle also protects the switch to a certain extent, preventing the switch from being accidentally touched.

In the fan described above, a support is provided in the middle of the housing, the end of the first rotating shaft located in the housing is rotatably arranged on the support, and the end of the second rotating shaft located in the housing is rotatably arranged on the support. on the stand.

A support is provided in the middle of the casing, so that the rotation process of the first rotating shaft and the second rotating shaft is more stable.

In the above-mentioned fan, the bracket includes an outer ring part and an inner ring part located in the outer ring part, and the outer ring part is fixed on the inner side wall of the housing; the end of the first rotating shaft located in the housing The part of the second rotating shaft is rotatably arranged on the inner ring part; the end part of the second rotating shaft located in the housing is rotatably arranged on the inner ring part; there are multiple connecting parts between the outer ring part and the inner ring part, adjacent to each other. There is a space between the two connecting parts.

There is a distance between two adjacent connecting parts, so that the air in the casing can freely pass through the bracket, so that when the fan is running, the airflow inside the casing can flow freely, ensuring good heat dissipation performance of the motor of the fan.

In the fan described above, the casing includes a middle casing and a first end cover and a second end cover respectively located at both ends of the middle casing, and the end of the first rotating shaft protrudes from the first end cover, so The end of the second rotating shaft protrudes from the second end cover.

The casing is provided with a middle casing, a first end cover and a second end cover. During the assembly or disassembly process, the parts in the casing can be loaded or taken out from both ends of the middle casing, which makes the assembly or disassembly of the fan more convenient. .

In the fan mentioned above, the middle shell is an aluminum alloy profile.

Setting the middle shell as an aluminum alloy profile structure makes the production process of the middle shell more convenient.

In the fan mentioned above, first bolts are included, and the first bolts are passed through the first end cover and the second end cover, and the first end cover and the second end cover are fixed by the first bolts.

The first end cover and the second end cover are fixed by the first bolts, so that even if the side wall of the middle shell is made thinner, it will not affect the fixing of the first end cover and the second end cover, so that the weight of the fan motor is lighter .

In the above-mentioned fan, the bracket includes an outer ring portion, the outer ring portion is located at the inner wall of the casing, the second bolt is pierced into the casing on the casing, and the end of the second bolt The part is fixed on the outer ring part.

In this structure, there is no need to arrange a positioning bracket structure on the inner wall of the housing, so that the structure of the housing is relatively simple.

Compared with the prior art, this blower has the following advantages:

1. Two motor structures are installed in one shell, on the one hand, it can make the fan run stably, and on the other hand, it also enables the smaller fan to generate larger air volume;

2. The switch is located between the handle, the casing and the baffle. On the one hand, it protects the switch, and on the other hand, it also prevents the switch from being accidentally touched, making the use of the fan safer;

3. The bracket in the shell has a part for air circulation, which makes the heat dissipation effect of the motor better;

4. The first end cover and the second end cover are fixed by the first bolts, so that even if the side wall of the middle shell is made thinner, the fixing of the first end cover and the second end cover will not be affected, thereby reducing the weight of the fan motor. lighter.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of blower fan;

Fig. 2 is a sectional view of the motor;

In the figure, 1. shell; 11. middle shell; 12. first end cover; 13. second end cover; 21. first stator; 22. first rotor; 23. first rotating shaft; 31. second Stator; 32, second rotor; 33, second rotating shaft; 4, bracket; 41, outer ring part; 42, inner ring part; 43, connecting part; 5, first bolt; 6, second bolt; 71, second One bearing; 72, the second bearing; 73, the third bearing; 74, the fourth bearing; 81, the shell; 82, the handle; 83, the switch; 84, the baffle; The first space; 88, the second space; 91, the first wind blade; 92, the second wind blade; 10, the motor.

Detailed ways

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

As shown in FIG. 1 , the blower includes a casing 81 and a motor 10 fixed inside the casing 81 through a support frame 86 . Support feet 85 are fixed on the lower side of the housing 81 . A handle 82 is fixed on the upper side of the housing 81 , and a baffle 84 is fixed on the housing 81 . The baffle 84 divides the space between the handle 82 and the housing 81 into a first space 87 and a second space 88 . A switch 83 is arranged on the handle 82 , and the switch 83 is located in the first space 87 . The setting of the handle 82 is convenient for the user to carry or move the fan. Because the baffle plate 84 is set at the handle 82, the user is not easy to touch the switch 83 when extending his hand into the second space 88 to hold the handle 82, thereby ensuring that the switch 83 of the fan is not easy to touch by mistake, making the use of the fan easier for safety. In addition, since the switch 83 is located between the handle 82 and the housing 81 , the handle 82 also protects the switch 83 to prevent accidental touch of the switch 83 .

As shown in FIGS. 1 and 2 , the motor 10 includes a housing 1 . The housing 1 includes a middle shell 11 and a first end cover 12 and a second end cover 13 respectively located at two ends of the middle shell 11 . Wherein, the middle shell 11 is an aluminum alloy profile. The first end cover 12 and the second end cover 13 are cast iron structures. Setting the middle shell 11 as an aluminum alloy profile structure makes the production process of the middle shell 11 more convenient.

The housing 1 is provided with a first rotating shaft 23 and a second rotating shaft 33 , wherein the end of the first rotating shaft 23 protrudes from the first end cover 12 , and the end of the second rotating shaft 33 protrudes from the second end cover 13 . The casing 1 is provided with a middle casing 11, a first end cover 12 and a second end cover 13. During assembly or disassembly, the components in the casing 1 can be loaded or taken out from both ends of the middle casing 11, so that The assembly or disassembly of the blower motor 10 is relatively convenient.

The motor 10 of the fan also includes a plurality of first bolts 5 , and in this embodiment, the number of the first bolts 5 is four. The first bolt 5 is passed through the first end cover 12 and the second end cover 13 , and the first end cover 12 and the second end cover 13 are fixed by the first bolt 5 . The first end cover 12 and the second end cover 13 are fixed by the first bolt 5, so that even if the side wall of the middle shell 11 is made thinner, it does not affect the fixing of the first end cover 12 and the second end cover 13, so that The weight of the motor 10 of the fan is relatively light.

As shown in Figure 2, a first stator 21 and a second stator 31 are respectively provided at both ends of the housing 1, a first rotor 22 is provided in the first stator 21, and a second rotor is provided in the second stator 31. 32 ; the first rotor 22 includes a first rotating shaft 23 , the end of the first rotating shaft 23 protrudes from the casing 1 , the second rotor 32 includes a second rotating shaft 33 , and the end of the second rotating shaft 33 extends out of the casing 1 . As shown in FIG. 1 , the end of the first shaft 23 is fixed with a first blade 91 , and the end of the second shaft 33 is fixed with a second blade 92 .

A support 4 is provided in the middle of the housing 1 , the end of the first rotating shaft 23 located in the housing 1 is rotatably disposed on the support 4 , and the end of the second rotating shaft 33 located in the housing 1 is rotatably disposed on the support 4 . A bracket 4 is provided in the middle of the housing 1 to make the rotation process of the first rotating shaft 23 and the second rotating shaft 33 more stable.

Specifically, the bracket 4 includes an outer ring portion 41 and an inner ring portion 42 located in the outer ring portion 41, the second bolt 6 is pierced into the housing 1 on the housing 1, and the end of the second bolt 6 is fixed on the outer ring portion 41. On the ring part 41. In this structure, there is no need to arrange the structure of the positioning bracket 4 on the inner wall of the housing 1, so that the structure of the housing 1 is relatively simple.

In addition, the end of the first rotating shaft 23 located in the housing 1 is rotatably disposed on the inner ring portion 42 ; the end portion of the second rotating shaft 33 located in the housing 1 is rotatably disposed on the inner ring portion 42 . Specifically, a first bearing 71 and a second bearing 72 are respectively provided between both sides of the inner ring portion 42 and between the first rotating shaft 23 and the second rotating shaft 33 . A third bearing 73 is provided between the first end cover 12 and the first rotating shaft 23 , and a fourth bearing 74 is provided between the second end cover 13 and the second rotating shaft 33 .

There are multiple connecting portions 43 between the outer ring portion 41 and the inner ring portion 42 , and there is a distance between two adjacent connecting portions 43 . There is a distance between two adjacent connecting parts 43, so that the air in the housing 1 can freely pass through the bracket 4, so that when the fan motor 10 is running, the air flow inside the housing 1 can flow freely, ensuring that the fan motor 10 is in good condition. cooling performance.

In this fan, two motor structures are arranged in one housing of the motor 10. In an application scenario, the rotation direction of the first rotor 22 is opposite to that of the second rotor 32, so that when the motor 10 is running, The eccentric force generated by the rotation of the first rotor 22 and the eccentric force generated by the rotation of the second rotor 32 cancel each other out, so that the operation of the fan is more stable.

After the air passes through the first fan blade 91, the air pressure increases, and the pressurized air passes through the second fan blade 92, and the air pressure becomes larger, thereby increasing the air volume of the fan. In addition, since the two motor structures are arranged axially, the radial dimension of the motor 10 is ensured to be small while increasing the power of the motor 10, so as to prevent the motor 10 from occupying too much space in the fan housing 81 and ensure that the air is kept in the fan housing 81. The flow is smooth, and at the same time, the small-sized fan can also generate a large air volume.

Claims (8)

1. wind turbine, including shell (81) and the motor (10) being fixed in shell (81), which is characterized in that the motor (10) Including housing (1), the housing (1) is respectively equipped with the first stator (21) and the second stator (31) at internal both ends, described The first rotor (22) is equipped in first stator (21), the second rotor (32) is equipped in second stator (31)；Described One rotor (22) includes first rotating shaft (23), and housing (1), second rotor are stretched out in the end of the first rotating shaft (23) (32) the second shaft (33) is included, housing (1) is stretched out in the end of second shaft (33), the first rotating shaft (23) End is fixed with the first fan blade (91), and the end of second shaft (33) is fixed with the second fan blade (92).

2. wind turbine according to claim 1, handle (82) is fixed on the shell (81), on the shell (81) Be fixed with baffle (84), the baffle (84) by the space between handle (82) and shell (81) be divided into the first space (87) and Second space (88), the handle (82) are equipped with switch (83), and the switch (83) is located in the first space (87).

3. wind turbine according to claim 1 or 2, which is characterized in that middle part is equipped with stent (4), institute in the housing (1) It states the end in first rotating shaft (23) being located in housing (1) to be rotatably provided on stent (4), second shaft (33) is upper It is rotatably provided in the end in housing (1) on stent (4).

4. wind turbine according to claim 3, which is characterized in that the stent (4) includes outer ring portion (41) and positioned at outer Inner ring portion (42) in circle portion (41), the outer ring portion (41) are fixed on housing (1) madial wall；The first rotating shaft (23) end being located in housing (1) is rotatably provided in inner ring portion (42)；It is located at housing in second shaft (33) (1) end in is rotatably provided in inner ring portion (42)；There are multiple companies between the outer ring portion (41) and inner ring portion (42) Socket part (43) has spacing between two neighboring connecting portion (43).

5. wind turbine according to claim 1 or 2, which is characterized in that the housing (1) includes middle shell (11) and respectively position The first end cap (12) and the second end cap (13) at middle shell (11) both ends, the end of the first rotating shaft (23) stretch out first The second end cap (13) is stretched out in end cap (12), the end of second shaft (33).

6. wind turbine according to claim 5, which is characterized in that the middle shell (11) is aluminium alloy extrusions.

7. wind turbine according to claim 5, which is characterized in that motor (10) includes the first bolt (5), first spiral shell Bolt (5) is threaded through on the first end cap (12) and the second end cap (13), and first end cap (12) and the second end cap (13) pass through First bolt (5) is mutually fixed.

8. wind turbine according to claim 3, which is characterized in that the stent (4) includes outer ring portion (41), and described is outer Circle portion (41) is located at housing (1) madial wall, and the second bolt (6) is equipped with into housing (1) on the housing (1), and The end of second bolt (6) is fixed in outer ring portion (41).