Centrifugal fan with damping structure

Abstract

The utility model provides a centrifugal fan with a damping structure. The centrifugal fan comprises a volute, a motor and a wind wheel. An air inlet is formed in one side of the volute, the motor is located on the other side of the volute, a rotating shaft of the motor movably penetrates through the side wall of the volute and then extends into the volute, and the wind wheel is arranged in the volute and coaxially fixed to the rotating shaft of the motor. The centrifugal fan further comprises a support, the support is fixed to the other side of the volute, a damping structure is arranged between the support and the volute, and the motor is fixed to the side, away from the volute, of the support. The noise generated when the centrifugal fan works can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan technical field, specifically, relate to a centrifugal fan with shock -absorbing structure. BACKGROUND

[0002] Centrifugal fan is the fan type of commonly used, the centrifugal fan on the market at present includes volute, motor and wind wheel, the volute one side is provided with the air inlet, the motor is located the other side of volute, the motor's rotating shaft activity penetrates the side wall of volute and then extends into the inside of volute, and the wind wheel is arranged in the inside of volute and is coaxially fixed with the rotating shaft of motor, however, in the above-mentioned existing centrifugal fan use process, when the motor drives the wind wheel to rotate, the motor is easy to vibrate due to the size deviation or assembly deviation of wind wheel, thereby the centrifugal fan can exist larger noise when working. SUMMARY

[0003] The utility model wants to solve the technical problem to provide a centrifugal fan with shock -absorbing structure, it can effectively reduce the noise of centrifugal fan when working.

[0004] The utility model provides a centrifugal fan with shock -absorbing structure, including volute, motor and wind wheel, the volute one side is provided with the air inlet, the motor is located the other side of volute, the motor's rotating shaft activity penetrates the side wall of volute and then extends into the inside of volute, and the wind wheel is arranged in the inside of volute and is coaxially fixed with the rotating shaft of motor, centrifugal fan still includes support, support is fixed in the other side of volute, and support is provided with shock -absorbing structure between volute, and the motor is fixed in the side of support away from volute.

[0005] The utility model through adopting above -mentioned structure, in the process that the motor drives the wind wheel to rotate, when the motor vibrates, the shock -absorbing structure that sets up between support and volute can play the shock -absorbing effect to the motor, thereby can effectively reduce the noise of centrifugal fan when working.

[0006] In a possible implementation, the shock -absorbing structure includes a plurality of shock -absorbing rubber sleeves, the plurality of shock -absorbing rubber sleeves are spaced apart along the circumferential direction of the support, one end of each shock -absorbing rubber sleeve is connected to the support, and the other end of each shock -absorbing rubber sleeve is supported on the other side of the volute. By adopting this structure, when the motor rotates, the shock -absorbing rubber sleeves can reliably buffer and absorb the vibration of the motor and the support, thereby effectively reducing the noise of the centrifugal fan when working.

[0007] In a possible implementation, the support is provided with a plurality of embedding holes corresponding to the plurality of shock-absorbing rubber sleeves, one end of each shock-absorbing rubber sleeve is expanded and fastened in the corresponding embedding hole, and the other side of the volute is provided with a plurality of support columns corresponding to the plurality of shock-absorbing rubber sleeves, each support column is axially arranged in the corresponding shock-absorbing rubber sleeve and tightly fits with the shock-absorbing rubber sleeve; after the support column is axially arranged in the shock-absorbing rubber sleeve, one end of the shock-absorbing rubber sleeve is expanded and fastened in the embedding hole, and the other end of the shock-absorbing rubber sleeve tightly abuts against the other side of the volute; by adopting the structure, one end of the shock-absorbing rubber sleeve is inserted into the embedding hole, and after the support column is axially arranged in the shock-absorbing rubber sleeve, one end of the shock-absorbing rubber sleeve can be expanded and fastened in the embedding hole, and the other end of the shock-absorbing rubber sleeve can tightly abut against the other side of the volute, that is, the shock-absorbing rubber sleeve can be reliably and conveniently connected with the support and the volute.

[0008] In a possible implementation, the other side of the volute and below the support is further fixed with a support plate, the support plate is provided with a shock-absorbing rubber column, the shock-absorbing rubber column is embedded with the support plate, and the upper end of the shock-absorbing rubber column tightly abuts against the lower edge of the support; by adopting the structure, under the action of the shock-absorbing rubber column, the shock-absorbing rubber column can reliably reduce the vibration of the motor in the vertical direction of the motor, so that the noise of the centrifugal fan during operation can be further eliminated, and the shock-absorbing rubber column can reliably support the motor.

[0009] In a possible implementation, the motor is fastened with the support through two upper and lower symmetrical bolts, each bolt is movably arranged in the stator of the motor and is threadedly fastened with the support; by adopting the structure, the motor can be reliably fastened with the support.

[0010] In a possible implementation, the side of the support facing the motor is provided with a ring-shaped positioning column coaxial with each bolt, the side of the stator of the motor facing the support is provided with a ring-shaped positioning groove coaxial with each bolt, and each ring-shaped positioning column is inserted into the corresponding ring-shaped positioning groove; by adopting the structure, before the motor and the support are fastened through the bolts, each ring-shaped positioning column can be inserted into the corresponding ring-shaped positioning groove, so that the pre-positioning of the motor and the support can be realized, that is, the bolts can conveniently pass through the stator of the motor and be threadedly connected with the support, and the fastening of the motor and the support is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 is a schematic diagram of the three-dimensional structure of the utility model;

[0012] Fig. 2 is a schematic diagram of the first partial exploded three-dimensional structure of the utility model;

[0013] Fig. 3 is a schematic diagram of the second partial exploded three-dimensional structure of the utility model;

[0014] Fig. 4 is a structural schematic view of the structure at A in Fig. 2;

[0015] Fig. 5 is a structural schematic view of the structure at B in Fig. 3. DETAILED DESCRIPTION

[0016] Firstly, those skilled in the art should understand that the embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments as needed in order to adapt to specific application occasions.

[0017] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0018] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0019] The present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0020] Referring to Figs. 1-5, the embodiments of the present application disclose a centrifugal fan with a damping structure, comprising a volute 1, a motor 2 and a fan wheel 3; one side of the volute 1 is provided with an air inlet 11, the motor 2 is located at the other side of the volute 1, the rotating shaft of the motor 2 movably penetrates the side wall of the volute 1 and extends into the inside of the volute 1, and the fan wheel 3 is arranged in the inside of the volute 1 and is coaxially fixed with the rotating shaft of the motor 2; the centrifugal fan further comprises a support 4, the support 4 is fixed at the other side of the volute 1, a damping structure is arranged between the support 4 and the volute 1, and the motor 2 is fixed at the side of the support 4 away from the volute 1.

[0021] The damping structure comprises a plurality of damping rubber sleeves 5, which are distributed in the circumferential direction of the support 4, one end of each of the damping rubber sleeves 5 is connected with the support 4, and the other end of each of the damping rubber sleeves 5 is supported on the other side of the volute 1. After the structure is adopted, when the motor is in vibration during rotation of the motor-driven wind wheel, the support and the motor can be reliably buffered and damped under the action of the plurality of damping rubber sleeves, so that the noise of the centrifugal fan during operation can be effectively reduced.

[0022] The support 4 is provided with a plurality of embedded holes 51 corresponding to the plurality of damping rubber sleeves 5, one end of each of the damping rubber sleeves 5 is expanded and fastened in the embedded hole 51 at the corresponding position; the other side of the volute 1 is provided with a plurality of support columns 12 corresponding to the plurality of damping rubber sleeves 5, each of the support columns 12 is axially arranged in the damping rubber sleeve 5 at the corresponding position and tightly matches with the damping rubber sleeve 5; after the support column 12 is axially arranged in the damping rubber sleeve 5, one end of the damping rubber sleeve 5 is expanded and fastened with the embedded hole 51, and the other end of the damping rubber sleeve 5 tightly abuts against the other side of the volute 1. After the structure is adopted, one end of the damping rubber sleeve can be expanded and fastened with the embedded hole, and the other end of the damping rubber sleeve can tightly abut against the other side of the volute after the support column is axially arranged in the damping rubber sleeve, that is, the damping rubber sleeve can be reliably and conveniently connected with the support and the volute.

[0023] The other side of the volute 1 and below the support 4 is further fixed with a support plate 6, the support plate 6 is provided with a damping rubber column 7, the damping rubber column 7 is embedded with the support plate 6, and the upper end of the damping rubber column 7 tightly abuts against the lower edge of the support 4. After the structure is adopted, the damping rubber column can reliably damp the motor in the vertical direction of the motor, so as to further eliminate the noise of the centrifugal fan during operation, and the damping rubber column can reliably support the motor.

[0024] The motor 2 is fastened with the support 4 by two upper and lower symmetrical bolts 8, each of the bolts 8 is movably arranged in the stator of the motor 2 and is threadedly fastened with the support 4. After the structure is adopted, the motor can be reliably fastened with the support.

[0025] The side of the support 4 facing the motor 2 is provided with an annular positioning column 41 coaxial with each bolt 8, and the side of the stator of the motor 2 facing the support 4 is provided with an annular positioning groove 21 coaxial with each bolt 8, and each annular positioning column 41 is inserted into the annular positioning groove 21 in the corresponding position; after adopting this structure, each annular positioning column can be inserted into the annular positioning groove in the corresponding position before the motor and the support are fastened by the bolts, so that the pre-positioning of the motor and the support can be realized, that is, the bolts can be conveniently passed through the stator of the motor and threadedly connected with the support, that is, the fixation of the motor and the support can be facilitated.

[0026] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A centrifugal fan with a shock-absorbing structure, comprising a volute (1), a motor (2) and a fan wheel (3); one side of the volute (1) is provided with an air inlet (11), the motor (2) is located at the other side of the volute (1), the rotating shaft of the motor (2) is movably penetrated through the side wall of the volute (1) and extends into the interior of the volute (1), and the fan wheel (3) is arranged in the interior of the volute (1) and is coaxially fixed with the rotating shaft of the motor (2); characterized in that: The centrifugal fan further comprises a support (4) fixed on the other side of the volute (1), a damping structure is arranged between the support (4) and the volute (1), and the motor (2) is fixed on the side of the support (4) away from the volute (1). ​ 2. The centrifugal fan having a damping structure according to claim 1, characterized by: The damping structure comprises a plurality of damping rubber sleeves (5) which are distributed in the circumferential direction of the support (4) at intervals, one end of each damping rubber sleeve (5) is connected with the support (4), and the other end of each damping rubber sleeve (5) is supported on the other side of the volute (1).

3. The centrifugal fan having a damping structure according to claim 2, characterized by: The support (4) is provided with an embedded hole (51) corresponding to each damping rubber sleeve (5), one end of each damping rubber sleeve (5) is expanded and fastened in the embedded hole (51) at the corresponding position, the other side of the volute (1) is provided with a supporting column (12) corresponding to each damping rubber sleeve (5), each supporting column (12) is axially arranged in the damping rubber sleeve (5) at the corresponding position and tightly matches with the damping rubber sleeve (5), when the supporting column (12) is axially arranged in the damping rubber sleeve (5), one end of the damping rubber sleeve (5) is expanded and fastened with the embedded hole (51), and the other end of the damping rubber sleeve (5) is tightly abutted against the other side of the volute (1).

4. The centrifugal fan having a damping structure according to any one of claims 1 to 3, characterized by: The other side of the volute (1) and below the support (4) is further fixed with a supporting plate (6), the supporting plate (6) is provided with a damping rubber column (7) arranged therethrough, the damping rubber column (7) is embedded with the supporting plate (6), and the upper end of the damping rubber column (7) is tightly abutted against the lower edge of the support (4).

5. The centrifugal fan having a damping structure according to claim 1, characterized by: The motor (2) is fastened with the support (4) through two upper and lower symmetrical bolts (8), each bolt (8) is movably arranged in the stator of the motor (2) and is threadedly fastened with the support (4).

6. The centrifugal fan having a damping structure according to claim 5, characterized by: The side of the support (4) facing the motor (2) is provided with an annular positioning column (41) coaxial with each bolt (8), the side of the stator of the motor (2) facing the support (4) is provided with an annular positioning groove (21) coaxial with each bolt (8), and each annular positioning column (41) is inserted into the annular positioning groove (21) at the corresponding position.

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