CN210977939U

CN210977939U - Shell assembly and bladeless fan

Info

Publication number: CN210977939U
Application number: CN201922022658.3U
Authority: CN
Inventors: 王凯强; 柳洲; 黄燕宁; 梁文龙; 王红兵
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-07-10
Anticipated expiration: 2029-11-21

Abstract

A shell assembly and a bladeless fan comprise an inner sleeve, wherein a mounting frame is arranged in the inner sleeve, an inner cavity of the mounting frame is used for mounting a power assembly of the bladeless fan, a noise reduction device is arranged outside the power assembly, and the noise reduction device is sleeved between the power assembly and the inner sleeve. Casing assembly, through increase the soundproof cotton as the main part of making an uproar device of falling between power assembly and endotheca, effectively reduced the noise of bladeless fan, obtain better user experience.

Description

Shell assembly and bladeless fan

Technical Field

The utility model belongs to the fan field especially relates to a casing assembly and bladeless fan.

Background

With the progress and development of society, attention of vast users to fans not only can obtain blowing, but also puts higher requirements on safety, appearance and the like of the fans, and bladeless fans come into force. It is approved by the broad masses of users with unique appearance and stronger safety performance.

As the rotating speed of the bladeless fan is high, large noise can be generated in the operation process, and the design of the noise reduction device is imperative for better user experience.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a casing assembly and bladeless fan are equipped with the device of making an uproar of falling on its casing assembly to reduce the noise of bladeless fan.

In order to achieve the above object, the specific technical solution of the housing assembly of the present invention is as follows:

a shell assembly comprises an inner sleeve, wherein a mounting frame is arranged in the inner sleeve, an inner cavity of the mounting frame is used for mounting a power assembly of a bladeless fan, a noise reduction device is arranged outside the power assembly, and the noise reduction device is sleeved between the power assembly and the inner sleeve.

Further, the noise reduction device comprises a fixing frame and a sound absorption block, the fixing frame is fixedly connected to the mounting frame, a mounting groove is formed in the outer wall of the fixing frame, and the sound absorption block is filled in the mounting groove.

Further, the fixing frame comprises a top ring, a bottom ring and a connecting plate; the upper end of a connecting plate arranged along a bus of the fixing frame is fixedly connected with the top ring, and the lower end of the connecting plate is fixed with the bottom ring.

Furthermore, every group connecting plate evenly sets up along mount circumference, and every group connecting plate has two at least, and the mounting groove is located between arbitrary adjacent two different group connecting plates.

Furthermore, reinforcing ribs are arranged between the connecting plates in the same group in a spanning mode, and two ends of each reinforcing rib are fixedly connected with the adjacent connecting plates respectively.

Furthermore, the fixed frame is provided with a barrier at the bottom of the mounting groove, and the barrier comprises cross beams and longitudinal beams which are arranged in a staggered manner; the left end and the right end of the cross beam are fixedly connected with the connecting plates on the two sides of the mounting groove respectively, and the upper end and the lower end of the longitudinal beam are fixed with the top ring and the bottom ring respectively.

Furthermore, an inserting plate is formed at the joint of the side surface and the bottom surface of the mounting groove; the inserting plate is inserted into the sound absorption block, so that the sound absorption block is plastically deformed to form an inserting groove, and the inserting groove is used for inserting the inserting plate.

Furthermore, a hook plate is formed at the joint of the side surface and the bottom surface of the mounting groove; the hook plate is inserted into the sound absorption block, so that the sound absorption block is plastically deformed to form a hook groove, and the groove is used for the insertion of the hook plate.

Further, the hook plate comprises a main plate and a hook plate, the main plate protrudes from the bottom of the mounting groove, and the hook plate extends outwards along the radial direction from one side, far away from the adjacent connecting plate, of the main plate.

The utility model also provides a bladeless fan, concrete scheme is as follows:

a bladeless fan comprises a power assembly and the shell assembly.

The utility model discloses a casing assembly and bladeless fan have following advantage: through increase soundproof cotton between power assembly and endotheca, as the main part of the device of making an uproar that falls, effectively reduced bladeless fan's noise, obtain better user experience.

Drawings

Fig. 1 is a sectional view of a bladeless fan according to the present invention;

fig. 2 is an exploded view of the noise reducer of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is an enlarged view of a portion B of fig. 2.

The notation in the figure is:

1. a housing; 2. an inner sleeve; 21. a commutation cavity; 211. a lower flow guide surface; 212. an upper flow guide surface; 3. a mounting frame; 31. a support; 32. an impeller housing; 4. a power assembly; 5. a fixed mount; 51. a top ring; 52. a bottom ring; 53. a connecting plate; 54. reinforcing ribs; 55. a barrier; 551. a cross beam; 552. a stringer; 56. inserting plates; 57. a hook plate; 571. a main board; 572. a sub-board; 6. a sound absorbing block; 7. and a rectification network.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the casing assembly and the bladeless fan of the present invention are further described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the bladeless fan of the present invention includes a housing assembly and a power assembly 4.

The housing assembly comprises a base housing and a mounting frame 3. The base shell comprises an outer cover 1, an inner sleeve 2, a pressure plate and a bottom plate. The outer cover 1 is coaxially sleeved outside the inner sleeve 2, and the pressing plate and the bottom plate are fixedly connected to the top and the bottom of the outer cover 1 and the bottom of the inner sleeve 2 respectively, so that the outer cover 1 and the inner sleeve 2 are fixed to each other through the pressing plate and the bottom plate. The outer cover 1 is provided with air inlets arranged along the circumferential array on the cylindrical surface, and the inner cover 2 is provided with air inlets arranged along the circumferential array on the lower part of the cylindrical surface. The inner part of the upper part of the inner sleeve 2 is fixedly connected with a mounting frame 3, and the mounting frame 3 is used for mounting a power assembly 4. The pressure plate is provided with an opening above the power assembly 4. Thus, the air enters the air inlet and the air inlet in sequence and is discharged from the opening through the driving of the power assembly 4.

The powertrain 4 includes an electric motor, an impeller and a diffuser. The impeller is installed on the output shaft of the motor. And the diffuser is installed at the upper side of the motor, and the upper end of the diffuser protrudes from the opening. The motor is used as a driver to drive the impeller to rotate, so that the air entering the shell assembly is discharged from the air outlet at the upper end of the diffuser through the diffuser.

Correspondingly, the mounting frame 3 comprises a bracket 31 and an impeller housing 32. The bracket 31 is fixedly connected with the inner sleeve 2, and the shell of the motor is arranged on the bracket 31, thereby fixing the motor. The impeller housing 32 is fitted over the outside of the impeller, and the upper end of the impeller housing 32 is connected to the lower end of the diffuser to rectify the air sucked by the impeller so that it smoothly enters the diffuser.

In order to reduce the noise emitted by the power assembly 4, the shell assembly is provided with a noise reduction device outside the power assembly 4, and the noise reduction device is arranged on the mounting frame 3 and sleeved between the power assembly 4 and the inner sleeve 2. The noise reduction device reflects, refracts and superposes noise, thereby achieving the noise reduction effect.

Referring to fig. 2, the noise reducer includes a fixing frame 5 and a sound-absorbing block 6. The mount 5 is formed with the mounting groove on the outer wall, inhales sound piece 6 and fills in the mounting groove to utilize the loose porous structure of inhaling sound piece 6, play the effect of making an uproar. The sound absorption block 6 can be made of sound insulation cotton.

The fixing frame 5 is designed to be light. The fixing frame 5 includes a top ring 51, a bottom ring 52, and a connecting plate 53. The bottom ring 52 is engaged with the upper end surface of the impeller housing 32, and the top ring 51 is engaged with the pressing plate. The connecting plates 53 are disposed on both sides of the fixing frame 5 along a bus of the fixing frame 5. The upper end of the connecting plate 53 is fixedly connected with the top ring 51, and the lower end is fixed with the bottom ring 52, so that the top ring 51 and the bottom ring 52 are fixed through the connecting plate 53.

In order to ensure the strength of the fixing frame 5, each group of connecting plates 53 is uniformly arranged along the circumferential direction of the fixing frame 5, and each group has at least two connecting plates 53. Reinforcing ribs 54 are arranged between the connecting plates 53 in the same group in a spanning manner, and two ends of each reinforcing rib 54 are fixedly connected with the adjacent connecting plates 53 respectively.

The mounting groove is located between any two adjacent different-group connecting plates 53. The fixed frame 5 is provided with a barrier 55 at the bottom of the mounting groove, and the barrier 55 comprises cross beams 551 and longitudinal beams 552 which are arranged in a staggered mode transversely and longitudinally. The left end and the right end of the cross beam 551 are fixedly connected with the connecting plates 53 on two sides of the mounting groove respectively, and the upper end and the lower end of the longitudinal beam 552 are fixed with the top ring 51 and the bottom ring 52 respectively, so that soundproof cotton can be conveniently inserted into the mounting groove.

As shown in fig. 3 and 4, the mounting groove is formed with an insert plate 56 and a hook plate 57 at the junction of the side surface and the bottom surface. The inserting plate 56 is inserted with the soundproof cotton, the soundproof cotton is plastically deformed to form a slot, and the slot is used for inserting the inserting plate 56. And the hook plate 57 comprises a main plate 571 and a secondary plate 572, the main plate 571 protrudes from the bottom of the mounting groove, the secondary plate 572 extends outwards along the radial direction from the side of the main plate 571 far away from the adjacent connecting plate 53, the hook plate 57 is inserted into soundproof cotton, the soundproof cotton deforms plastically to form a hook groove, and the hook groove is used for the hook plate 57 to be inserted. Thereby, the soundproof cotton is further fixed.

Like this, through the setting of the device of making an uproar that falls, reduce the noise that power assembly 4 sent, improve user experience.

In addition to the noise caused by the drive unit 4, the air flow itself also causes noise, in particular in the reversing space 21 on the inner and lower side of the inner sleeve 2. In the reversing cavity 21 right below the power assembly 4, the side surface of the reversing cavity 21 is communicated with the air inlet hole, the upper end of the reversing cavity 21 is communicated with the inner cavity of the mounting frame 3, so that air entering from the air inlet hole is changed into axial flow from radial flow, and noise is generated.

In order to reduce the air noise of the reversing cavity 21, the rectifying net 7 can be rectangular, circular and the like. The holes can absorb and weaken some noise because the rectifying net 7 also belongs to a porous sound absorption material.

The thickness of the rectifying net 7 is 0-10 mm. Preferably, the thickness of the rectifying net 7 is 0.5 mm. When the thickness of the rectifying net 7 is too large, the air quantity is greatly influenced because a certain resistance is formed; when the thickness of the rectifying net 7 is too small, the played noise reduction effect is poor. Under the preferable scheme, the air volume has almost no influence, and the noise can be reduced by about 1.8 dB.

The center of the bottom surface of the reversing cavity 21 is bulged upwards to form a lower guide surface 211. Correspondingly, the center of the top surface of the reversing cavity 21 is bulged upwards to form an upper flow guide surface 212. The upper guide surface 212 and the lower guide surface 211 with the same gradient help the gas to be reversed in the reversing cavity 21, and the effect of noise reduction can also be achieved.

In order to further reduce noise, the edge of the reversing cavity 21 is sleeved with a silencing device. The acoustic abatement device comprises an array of acoustic abatement plates disposed about the array of reverser cavities 21. The silencing plate forms a bent flow passage, the flow passage flows through the flow passage, and noise is reflected, refracted and superposed in the flow passage, so that the noise is eliminated.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides a casing assembly, includes endotheca (2), is equipped with mounting bracket (3) in endotheca (2), and mounting bracket (3) inner chamber is used for installing power assembly (4) of bladeless fan, its characterized in that, power assembly (4) are equipped with the device of making an uproar outward, and the device cover of making an uproar is established between power assembly (4) and endotheca (2).

2. The housing assembly of claim 1, wherein the noise reduction device comprises a fixing frame (5) and a sound absorption block (6), the fixing frame (5) is fixedly connected to the mounting frame (3), an installation groove is formed on the outer wall of the fixing frame (5), and the sound absorption block (6) is filled in the installation groove.

3. The housing assembly according to claim 2, wherein the holder (5) comprises a top ring (51), a bottom ring (52) and a connecting plate (53); the upper end of a connecting plate (53) arranged along the bus of the fixed frame (5) is fixedly connected with the top ring (51), and the lower end is fixed with the bottom ring (52).

4. The housing assembly of claim 3, wherein each set of connecting plates (53) is uniformly arranged along the circumference of the fixing frame (5), and at least two connecting plates (53) are arranged in each set, and the mounting groove is formed between any two adjacent connecting plates (53).

5. The shell assembly according to claim 4, wherein a reinforcing rib (54) is spanned between the connecting plates (53) in the same group, and two ends of the reinforcing rib (54) are fixedly connected with the adjacent connecting plates (53) respectively.

6. The shell assembly according to claim 3, characterized in that the fixed frame (5) is provided with a barrier (55) at the bottom of the mounting groove, and the barrier (55) comprises cross beams (551) and longitudinal beams (552) which are arranged in a staggered manner; the left end and the right end of the cross beam (551) are fixedly connected with the connecting plates (53) on two sides of the mounting groove respectively, and the upper end and the lower end of the longitudinal beam (552) are fixed with the top ring (51) and the bottom ring (52) respectively.

7. The housing assembly of claim 2, wherein the mounting groove is formed with an insert plate (56) at the intersection of the side surface and the bottom surface; the inserting plate (56) is inserted into the sound absorption block (6), so that the sound absorption block (6) is plastically deformed to form a slot for the inserting plate (56) to be inserted.

8. The housing assembly of claim 2, wherein the mounting groove is formed with a hook plate (57) at the intersection of the side surface and the bottom surface; the hook plate (57) is inserted into the sound absorption block (6), so that the sound absorption block (6) is plastically deformed to form a hook groove, and the hook plate (57) is inserted into the groove.

9. The housing assembly of claim 8, wherein the hook plate (57) comprises a main plate (571) and a secondary plate (572), the main plate (571) protruding from the bottom of the mounting slot, the secondary plate (572) extending radially outward from the main plate (571) away from the adjacent connecting plate (53).

10. A bladeless fan, comprising a power assembly (4), and a housing assembly according to any one of claims 1-9.