CN215890526U

CN215890526U - Cross-flow fan and blowing device

Info

Publication number: CN215890526U
Application number: CN202121410615.3U
Authority: CN
Inventors: 陈小平; 陈伟健; 唐清生
Original assignee: Guangzhou Linkage All Things Technology Co Ltd
Current assignee: Guangzhou Linkage All Things Technology Co Ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-02-22
Anticipated expiration: 2031-06-23

Abstract

The utility model relates to the field of blowing devices, in particular to a cross-flow fan and a blowing device; the cross-flow fan comprises a wind wheel, a shell and a driving motor, wherein the wind wheel is arranged in the shell, an air channel is formed between the wind wheel and the shell, the driving motor is connected with the wind wheel and drives the wind wheel to rotate, sound-proof grooves are formed in two sides of the shell in a first direction, at least one end of two ends of the wind wheel in the first direction is installed in the sound-proof grooves, and the first direction is the long axis direction of the wind wheel; according to the utility model, the sound-proof groove with a certain thickness is arranged, so that a gap with a certain thickness is ensured between the shell and the two sides of the wind wheel, and the air flow is effectively prevented from generating whistle in the blowing process; further, it is through setting wind wheel length to be greater than about the distance between two antivibration sound grooves to make both ends after the wind wheel assembly all extend to antivibration sound inslot side, with the matching degree that improves wind wheel and antivibration sound groove, and then effectively solved the problem of surge sound.

Description

Cross-flow fan and blowing device

Technical Field

The utility model relates to the field of blowing devices, in particular to a cross-flow fan and a blowing device.

Background

The cross-flow fan mainly comprises an impeller, an air duct and a motor. The impeller is made of aluminum alloy or engineering plastic; the air duct is generally formed by punching a metal sheet and can also be cast by plastic or aluminum alloy; the casing adopts a streamline design, so that the loss of air flow can be effectively reduced, and the working efficiency of the fan is greatly improved; the motor is a power part of the cross-flow fan and can be supplied with power by alternating current or direct current. The drive motor is generally flexibly mounted with the impeller and fixed to the air duct.

When the cross-flow fan works, whistling sounds are easily generated between the two sides of the cross-flow fan and the air duct to generate vibration sounds, and the conventional cross-flow fan is generally provided with a section of groove on the two sides of the air duct to solve the whistling sounds of the cross-flow fan on the two sides. However, due to the tolerance of the structure and the problems in the process, if the joint of the groove and the wind wheel is not closely matched, the two sides of the wind channel still have surge sound.

Therefore, it is important to design a cross-flow fan and a blowing device that can effectively prevent the generation of a whistling sound or a surging sound during operation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that in the prior art, the cross-flow fan and the blowing device with high matching degree of the shell and the wind wheel are provided, and the defect that the two sides of the air duct generate the whistle or surge sound in the prior art is overcome.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a cross-flow fan, cross-flow fan includes wind wheel, casing and driving motor, and the wind wheel setting forms the wind channel in the casing and between the casing, and driving motor is connected and drives its rotation with the wind wheel, and its preferred scheme lies in: the casing all is provided with the antivibration sound groove in the both sides on first direction, at least one end is installed to in the antivibration sound groove in the both ends of wind wheel on first direction, wherein, first direction is the wind wheel major axis direction.

Wherein, the preferred scheme is as follows: both ends of the wind wheel in the first direction are installed into the sound-proof grooves.

Wherein, the preferred scheme is as follows: the end of the wind wheel extends to the inner side of the sound-proof groove for at least 0.5 mm.

Wherein, the preferred scheme is as follows: the shape of the notch of the sound-proof groove is matched with the shape of the outer wall of the wind wheel.

Wherein, the preferred scheme is as follows: the casing includes first installation unit and is used for holding driving motor's second installation unit, and first installation unit includes the outer wall and is used for the installation to hold the installing frame of wind wheel, and outer wall, installing frame and second installation unit are integrated into one piece and set up.

Wherein, the preferred scheme is as follows: the mounting frame includes the framework and sets up the mounting structure at the framework both ends, and the wind wheel setting is fixed with the casing in the framework and through the mounting structure at both ends.

Wherein, the preferred scheme is as follows: the mounting structure is a mounting plate, and a support notch used for fixing the wind wheel is formed in the upper edge of the mounting plate.

Wherein, the preferred scheme is as follows: the wind wheel includes the wind wheel body and sets up the installation axle at wind wheel body both ends, and the wind wheel body sets up in the framework, and the installation axle at its both ends all sets up in the support notch on the mounting panel.

Wherein, the preferred scheme is as follows: the anti-vibration sound grooves at the two ends of the shell are arranged on the inner sides, close to the frame, of the mounting plates, and the wind wheel body is arranged in the frame and the two ends of the wind wheel body extend towards the inner sides of the anti-vibration sound grooves.

In order to solve the problems in the prior art, the utility model also provides a blowing device, and the preferred scheme is as follows: the blowing device comprises a main body, a cross-flow fan arranged in the main body and an air outlet communicated with an air channel of the cross-flow fan.

The utility model has the beneficial effects that the cross-flow fan and the blowing device with high matching degree of the shell and the wind wheel are designed, so that the generation of whistling sound or surging sound during the work of the cross-flow fan or the blowing device is effectively prevented, specifically, the anti-vibration sound groove with certain thickness is arranged, so that the gap with certain thickness is ensured between the shell and the two sides of the wind wheel, the whistling sound generated during the blowing process of air flow is effectively prevented, in addition, the length of the wind wheel is set to be larger than the distance between the left anti-vibration sound groove and the right anti-vibration sound groove, and the two ends of the assembled wind wheel extend towards the inner sides of the anti-vibration sound groove, so that the matching degree of the wind wheel and the anti-vibration sound groove is improved, and the problem of surging sound is further effectively solved.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view of the construction of a crossflow blower of the present invention;

FIG. 2 is a schematic structural view of a casing of a crossflow blower of the present invention;

fig. 3 is a partially enlarged schematic view of the area a in fig. 2.

Detailed Description

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, a crossflow blower according to an embodiment of the present invention is provided.

Referring to fig. 1 to 3, the cross-flow fan includes a wind wheel 1, a housing 2 and a driving motor, the wind wheel 1 is disposed in the housing 2 and forms an air duct with the housing 2, the driving motor drives the wind wheel 1 to work, wherein both sides of the housing 2 in a first direction are both provided with sound-proof grooves 21, at least one end of two ends of the wind wheel 1 in the first direction is mounted in the sound-proof grooves 21, and the first direction is a long axis direction of the wind wheel. Preferably, both ends of the wind wheel 1 in the first direction are installed into the sound-proof grooves 21.

Specifically, the wind wheel 1 is also called an impeller, the axial length of the impeller is not limited, the length of the impeller can be selected at will according to different use requirements, the axial length of the impeller can be confirmed specifically according to the length of the shell 2, and the impeller is provided with a plurality of long strip-shaped fan blades. The driving motor can drive the impeller to rotate, and when the air flow penetrates through the impeller to flow, the air flow is acted by two times of forces of the adjacent rotating fan blades, so that a far distance can be reached, and the air blowing effect is realized.

When wind wheel 1 rotates in casing 2, casing 2 inner wall will be hugged closely to the both sides of wind wheel 1, when the air current runs through the impeller and flows to the junction of wind wheel 1 both sides and casing 2, because the clearance appears exhaling the sound too little between the two, in order to ensure that casing 2 and wind wheel 1 both sides have the clearance of certain distance, both sides that can be in casing 2 all are provided with anti-vibration sound groove 21, anti-vibration sound groove 21 specifically is a recess that can eliminate exhaling the sound, the recess has certain thickness, through setting up the recess that has certain thickness, can effectively ensure to have the clearance of certain thickness between wind wheel 1 both ends and the casing 2 left and right sides inner wall, can effectively eliminate and exhale the sound. However, according to the tolerance problem of the existing assembly process and parts, when the fan is assembled, if the fan is improperly matched with the sound-proof grooves 21 or close fit cannot be ensured, surge sounds still occur on both sides of the air duct, in order to eliminate the surge sounds caused by improper matching, the length of the wind wheel 1 can be set to be larger than the distance between the left and right sound-proof grooves 21, and when the wind wheel 1 is assembled, both ends of the wind wheel extend towards the inner side of the sound-proof grooves 21, so that the matching degree of the wind wheel 1 and the sound-proof grooves 21 is improved, and the problem of the surge sounds is solved.

It should be noted that one of the two ends of the wind wheel 1 extends towards the inner side of the sound-proof groove 21 to solve the problem of the surge sound, and this embodiment is a preferred solution, that is, the two ends of the wind wheel 1 both extend towards the inner side of the sound-proof groove 21.

Further, the end of the wind wheel 1 extends to the inside of the sound-proof groove 21 by a distance of at least 0.5mm, and preferably, both side ends of the wind wheel 1 extend to the inside of the sound-proof groove 21 by a distance of at least 0.5 mm. Specifically, in order to better solve the problem of the rattling noise, it is preferable to set the distance by which both ends of the wind rotor 1 extend to the inside of the noise vibration preventing groove 21 to 0.5 mm.

Further, and referring to fig. 2 and 3, the notch shape of the sound-proof groove 21 is adapted to the shape of the outer wall 221 of the wind wheel 1. Specifically, the sound-proof groove 21 has a certain thickness, and the shape of the upper surface of the sound-proof groove is adapted to the shape of the outer wall 221 of the wind wheel 1, generally speaking, the wind wheel 1 includes a plurality of blades, the blades are sequentially arranged to form the cylindrical wind wheel 1, the upper surface of the sound-proof groove 21 can be arranged in an arc, and the arc of the sound-proof groove is adapted to the arc of the outer wall 221 of the cylindrical wind wheel 1, so as to improve the matching degree between the wind wheel 1 and the sound-proof groove 21.

As shown in fig. 2 and 3, an embodiment of the present invention provides a housing.

The housing 2 includes a first mounting unit and a second mounting unit 23 for accommodating the driving motor, the first mounting unit includes an outer wall 221 and a mounting frame 222 for mounting and accommodating the wind wheel 1, and the outer wall 221, the mounting frame 222 and the second mounting unit 23 are all integrally formed.

Specifically, and referring to fig. 3, the mounting frame 222 includes a frame 2221 and mounting structures arranged at two ends of the frame 2221, the mounting frame 222 is an arc-shaped outer frame, and the radian of the mounting frame is adapted to the radian of the outer wall 221 of the wind wheel 1, which is mainly used for accommodating the wind wheel 1, the mounting structures are arranged at two ends of the mounting frame 222, which is mainly used for supporting the wind wheel 1, when the wind wheel 1 is placed in the mounting frame 222, two ends of the wind wheel 1 can be supported and limited through the mounting structures, the mounting structures can be provided with mounting holes, mounting posts and the like, in this embodiment, a mounting plate 2222 is adopted, a supporting notch for fixing the wind wheel 1 is provided at the upper edge of the mounting plate 2222, the mounting plate 2222 is matched with the frame 2221 to form a semi-enclosed cavity structure, so as to accommodate the wind wheel to install the wind wheel 1. The second mounting unit 23 is mainly used for accommodating a driving motor, the driving motor is arranged in the second mounting unit 23, and an output shaft of the driving motor extends along the direction close to the first mounting unit and is connected with the wind wheel 1 in the mounting frame 222. The outer wall 221 and the second mounting unit 23 are integrally formed and can be used as an outer frame of the cross-flow fan, and the mounting frame 222, the outer wall 221 and the second mounting unit 23 are integrally formed together, so that the working stability and the structural stability of the cross-flow fan can be effectively improved.

As shown in fig. 1 and 3, the embodiment of the utility model provides a wind wheel.

The wind wheel includes wind wheel body 11 and sets up the installation axle 12 at 11 both ends of wind wheel body, and wind wheel body 11 sets up in framework 2221, and the installation axle 12 at its both ends all sets up in the support notch on mounting panel 2222.

Specifically, the wind wheel 1 passes through the corresponding support notch by the mounting shaft 12 at the end of the drive motor and is fixedly connected with the output shaft of the drive motor, and the mounting shaft 12 at the other end of the wind wheel is arranged in the corresponding support notch and is movably connected with the first mounting unit. When the cross-flow fan works, the driving motor drives the wind wheel 1 to rotate relative to the shell 2 so as to fan the airflow penetrating through the wind wheel 1 for multiple times, and long-distance blowing is realized.

Note that, the sound-proof grooves 21 at both ends of the housing 2 are provided on the inner side of the mounting plate 2222 with respect to the frame 2221, and the wind turbine body 11 is provided in the frame 2221 with both ends thereof extending toward the inner side of the sound-proof grooves 21. Specifically, the sound-proof grooves 21 are disposed at two ends of the casing 2, and are disposed at positions where the mounting plates 2222 are close to the inner side of the frame 2221, and when the wind wheel 1 is disposed in the frame 2221, the mounting shafts 12 at the two ends are respectively connected to the mounting notches at the two ends of the casing 2, and the two ends of the wind wheel body 11 extend toward the inner side of the sound-proof grooves 21.

Further, the utility model also provides an embodiment of the blowing device.

A blowing device comprises a main body, a cross-flow fan and an air outlet communicated with an air duct of the cross-flow fan. The blowing device may be any device having a blowing function, such as an air conditioner, a fan heater, etc., and the cross-flow fan is disposed in the main body to achieve air flow of the blowing device, i.e., air is conveyed toward the air outlet through the cross-flow fan and is blown out from the air outlet.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, but rather as embodying the utility model in a wide variety of equivalent variations and modifications within the scope of the appended claims.

Claims

1. The utility model provides a cross-flow fan, cross-flow fan includes wind wheel, casing and driving motor, the wind wheel set up in the casing and with form the wind channel between the casing, driving motor drive the work of wind wheel, its characterized in that: the casing all is provided with the antivibration sound groove in the both sides on first direction, at least one end is installed to in the antivibration sound groove in the both ends of wind wheel on first direction, wherein, first direction is the wind wheel major axis direction.

2. The crossflow blower of claim 1 wherein: both ends of the wind wheel in the first direction are installed in the sound-proof groove.

3. The crossflow blower of claim 1 or 2 in which: the end of the wind wheel extends to the inner side of the sound-proof groove for at least 0.5 mm.

4. The crossflow blower of claim 1 or 2 in which: the shape of the notch of the sound-proof groove is matched with the shape of the outer wall of the wind wheel.

5. The crossflow blower of claim 1 or 2 in which: the casing includes first installation unit and is used for holding driving motor's second installation unit, first installation unit includes the outer wall and is used for the installation to hold the installing frame of wind wheel, the outer wall the installing frame and the second installation unit is integrated into one piece setting.

6. The crossflow blower of claim 5 wherein: the mounting frame includes the framework and sets up the mounting structure at framework both ends, the wind wheel sets up in the framework and through both ends the mounting structure with the casing is fixed.

7. The crossflow blower of claim 6 wherein: the mounting structure is a mounting plate, and a support notch used for fixing the wind wheel is formed in the upper edge of the mounting plate.

8. The crossflow blower of claim 7 wherein: the wind wheel includes the wind wheel body and sets up the installation axle at wind wheel body both ends, the wind wheel body sets up in the frame, just the wind wheel body both ends the installation axle all sets up on the mounting panel in the support notch.

9. The crossflow blower of claim 7 wherein: the utility model discloses a wind wheel body, including casing, mounting panel, wind wheel body, mounting panel, casing both ends the antivibration sound groove all sets up the mounting panel is by the inboard of framework, the wind wheel body sets up in the framework and its both ends to the antivibration sound inslot side extends.

10. The utility model provides a blast apparatus which characterized in that: the blowing device comprises a main body, the cross-flow fan which is arranged in the main body and is as claimed in any one of claims 1 to 9, and an air outlet which is communicated with the air channel of the cross-flow fan.