Cabinet type centrifugal fan capable of running stably

Abstract

The utility model discloses a cabinet type centrifugal fan stable in operation, and belongs to the field of centrifugal fans. The cabinet type centrifugal fan comprises a cabinet body; a mounting cavity is formed in the cabinet body; the base is fixedly connected to the bottom wall of the mounting cavity; the driving motor is fixedly connected to the base; the first belt wheel is fixedly connected to an output rotating shaft of the driving motor; the mounting frame is fixedly connected to the base; the mounting block is fixedly connected to the top wall of the mounting frame; the driving shaft is rotationally connected to the mounting block; a bearing is mounted in the mounting block, and the driving shaft penetrates through the bearing and rotates relative to the bearing; the second belt wheel is fixedly connected to one end of the driving shaft; the belt is sleeved on the first belt wheel and the second belt wheel; the support is fixedly connected to the base. The volute is fixedly connected to the support. The centrifugal impeller is fixedly connected to the driving shaft; and the rubber ring is fixedly connected to the air outlet of the volute. The cabinet type centrifugal fan has the beneficial effects that the cabinet type centrifugal fan is stable in operation, and the service life of the fan can be prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of centrifugal fan, in particular to a cabinet centrifugal fan with stable operation. BACKGROUND

[0002] The cabinet dual-purpose centrifugal fan has the advantages of excellent high-temperature resistance, compact structure, neat appearance, easy installation and use, etc., and is widely used in industrial, civil buildings and basements, etc. The structure usually includes a casing, a fan, a motor and other components.

[0003] In the prior art, the centrifugal impeller deviates from the shaft center due to various reasons during rotation, and during rotation, the long-time rotation of the blade causes fatigue damage due to insufficient strength, often requiring replacement, causing resource waste.

[0004] Now a cabinet centrifugal fan with stable operation is provided. CONTENT OF THE INVENTION

[0005] The content part of the present application is used to introduce the concept in a simple form, which will be described in detail in the specific embodiment part. The content part of the present application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] In order to solve the technical problems mentioned in the background part, some embodiments of the present application provide a cabinet centrifugal fan with stable operation, comprising: a cabinet body;

[0007] Its features are that: a mounting cavity is arranged in the cabinet body;

[0008] The cabinet centrifugal fan with stable operation further comprises:

[0009] A base is fixedly connected to the bottom wall of the mounting cavity;

[0010] A drive motor is fixedly connected to the base;

[0011] A first pulley is fixedly connected to the output shaft of the drive motor;

[0012] A mounting bracket is fixedly connected to the base;

[0013] A mounting block is fixedly connected to the top wall of the mounting bracket;

[0014] A drive shaft is rotatably connected to the mounting block;

[0015] Wherein, a bearing is arranged in the mounting block, and the drive shaft passes through the bearing and rotates relative to the bearing;

[0016] A second pulley is fixedly connected to one end of the drive shaft;

[0017] a belt, sleeved on the first pulley and the second pulley;

[0018] a support, fixedly connected to the base;

[0019] a volute, fixedly connected to the support;

[0020] a centrifugal impeller, fixedly connected to the drive shaft;

[0021] a rubber ring, fixedly connected to the air outlet of the volute.

[0022] Further, the cabinet body is provided with a double-open cabinet door, the top wall of the cabinet body is provided with an air outlet hole, and the side wall of the cabinet body is provided with an air inlet hole.

[0023] Further, the first filter plate is installed in the air outlet hole, and the second filter plate is installed in the air inlet hole.

[0024] Further, the air outlet of the volute is located directly below the air outlet hole, and the rubber ring is in contact with the top wall of the installation cavity.

[0025] Further, the support is provided with two and position-symmetrical fixed connections to the top wall of the base, and the volute is fixedly connected between the two supports.

[0026] Further, the air inlet of the volute is located at the side of the air inlet hole, and the through hole is arranged on the support close to the air inlet hole.

[0027] Further, one end of the drive shaft penetrates through the side wall of the volute and extends into the volute, and the centrifugal impeller is fixedly connected to the end of the drive shaft located in the volute.

[0028] Further, the first pulley and the second pulley are each provided with a plurality of annular grooves.

[0029] Further, the belt is composed of a plurality of small synchronous belts, and each synchronous belt is sleeved in the annular groove.

[0030] The cabinet centrifugal fan provided by the application has the beneficial effects that the cabinet centrifugal fan runs stably, and the service life of the fan can be increased. BRIEF DESCRIPTION OF DRAWINGS

[0031] The drawings constituting a part of the application are used to provide a further understanding of the application, so that other features, objects and advantages of the application become more apparent. The illustrative embodiment drawings of the application and the description thereof are used to explain the application, and do not constitute an improper limitation on the application.

[0032] In addition, throughout the drawings, the same or similar reference signs represent the same or similar elements. It should be understood that the drawings are schematic, and the elements and elements are not necessarily drawn according to the scale.

[0033] In the drawings:

[0034] Figure 1 is a whole schematic diagram according to the embodiment of the present application;

[0035] Figure 2 is a structural sectional schematic diagram of a part of the embodiment, mainly showing the mounting frame structure;

[0036] Figure 3 is a structural schematic diagram of a part of the embodiment, mainly showing the rubber ring structure;

[0037] Figure 4 is a structural schematic diagram of a part of the embodiment, mainly showing the second pulley structure.

[0038] Reference signs:

[0039] 11, cabinet body; 12, mounting cavity; 13, cabinet door; 14, base; 15, driving motor; 16, first pulley; 17, mounting frame; 18, support; 19, volute; 20, air inlet hole; 21, air outlet hole; 22, first filter plate; 23, second filter plate; 24, rubber ring; 25, mounting block; 26, driving shaft; 27, second pulley; 28, belt; 29, centrifugal impeller. DETAILED DESCRIPTION

[0040] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be interpreted as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly and completely understood. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0041] In addition, it should be further noted that only the parts related to the present application are shown in the drawings for the convenience of description. The embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0042] It should be noted that the concepts of "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0043] It should be noted that the modification of "one", "multiple" in the present disclosure is illustrative and not restrictive, and those skilled in the art should understand that unless the context clearly indicates otherwise, it should be understood as "one or more".

[0044] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0045] Referring to Figures 1-4 The cabinet centrifugal fan with smooth operation includes a cabinet 11, a base 14, a driving motor 15, a first pulley 16, a mounting frame 17, mounting blocks 25, a driving shaft 26, a second pulley 27, a belt 28, supports 18, a volute 19, a centrifugal impeller 29 and a rubber ring 24.

[0046] The cabinet 11 is provided with double-open cabinet doors 13, and the top wall of the cabinet 11 is provided with an air outlet hole 21, and the side wall of the cabinet 11 is provided with an air inlet hole 20. The first filter plate 22 is installed in the air outlet hole 21, and the second filter plate 23 is installed in the air inlet hole 20.

[0047] The cabinet 11 is provided with an installation cavity 12, the base 14 is fixedly connected to the bottom wall of the installation cavity 12, the driving motor 15 is fixedly connected to the base 14, and the first pulley 16 is fixedly connected to the output rotating shaft of the driving motor 15. The mounting frame 17 is fixedly connected to the base 14, the mounting blocks 25 are provided with two symmetrically-arranged mounting blocks 25 fixedly connected to the top wall of the mounting frame 17, the mounting blocks 25 are provided with bearings, and the driving shaft 26 penetrates through the bearings and rotates relative to the bearings.

[0048] The supports 18 are provided with two symmetrically-arranged supports 18 fixedly connected to the top wall of the base 14, the volute 19 is fixedly connected between the two supports 18, the air outlet of the volute 19 is located directly below the air outlet hole 21, the rubber ring 24 is fixedly connected to the air outlet of the volute 19 and contacts the top wall of the installation cavity 12. The air inlet of the volute 19 is located at the side of the air inlet hole 20, and the support 18 close to the air inlet hole 20 is provided with a through hole.

[0049] One end of the driving shaft 26 penetrates through the side wall of the volute 19 and extends into the volute 19, the centrifugal impeller 29 is fixedly connected to one end of the driving shaft 26 located in the volute 19, the centrifugal impeller 29 adopts a multi-wing structure and is smooth in movement and static state and will not be easily damaged due to fatigue. The first pulley 16 and the second pulley 27 are both provided with a plurality of annular grooves, the belt 28 is composed of a plurality of small synchronous belts, and each synchronous belt is sleeved in the annular groove. The second pulley 27 is fixedly connected to one end of the driving shaft 26.

[0050] Working or installation process:

[0051] The drive motor 15 is started, and the output shaft of the drive motor 15 drives the first pulley 16 to rotate. The first pulley 16 rotates and drives the belt 28 for transmission. The belt 28 transmits and drives the second pulley 27 to rotate. The second pulley 27 drives the drive shaft 26 to rotate. The drive shaft 26 drives the centrifugal impeller 29 to rotate. The centrifugal impeller 29 rotates and generates centrifugal airflow, so that the air outside the cabinet 11 passes through the air inlet 20 and the second filter plate 23 and enters the volute 19 through the through hole and the air inlet of the volute 19; the airflow entering the volute 19 passes through the air outlet of the volute 19 and flows upward, and the airflow passes through the first filter plate 22 and the air outlet 21 and flows out of the cabinet 11;

[0052] By providing annular grooves on the first pulley 16 and the second pulley 27 and dividing the belt 28 into multiple synchronous belts, the belt 28 is prevented from detaching from the second pulley 27 or the first pulley 16 during transmission, resulting in a failure of transmission; the drive shaft 26 is supported by the bearing and the mounting block 25, so that the fan runs more smoothly; the rubber ring 24 is blocked between the air outlet of the volute 19 and the top wall of the mounting cavity 12 to prevent the volute 19 from hitting the top wall of the mounting cavity 12 and generating loud noise when it vibrates.

[0053] The above description is only an illustration of some preferred embodiments of the present disclosure and the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A cabinet-type centrifugal fan with stable operation, comprising: Cabinet (11); The invention is characterized in that: a mounting cavity (12) is provided in the cabinet (11); The cabinet-type centrifugal fan with stable operation also includes: A base (14) fixedly connected to the bottom wall of the mounting cavity (12); A driving motor (15) is fixedly connected to the base (14); A first pulley (16) is fixedly connected to the output shaft of the drive motor (15); A mounting frame (17) fixedly connected to the base (14); A mounting block (25) fixedly connected to the top wall of the mounting frame (17); a drive shaft (26) rotatably connected to the mounting block (25); A bearing is installed in the mounting block (25), and the drive shaft (26) passes through the bearing and rotates relative to the bearing; A second pulley (27) is fixedly connected to one end of the drive shaft (26); A belt (28) is sleeved on the first pulley (16) and the second pulley (27); a bracket (18) fixedly connected to the base (14); A volute (19) is fixedly connected to the bracket (18); a centrifugal impeller (29) fixedly connected to the drive shaft (26); The rubber ring (24) is fixedly connected to the air outlet of the volute (19).

2. The cabinet-type centrifugal fan with stable operation according to claim 1, characterized in that: The cabinet body (11) is provided with double-opening cabinet doors (13), the top wall of the cabinet body (11) is provided with air outlet holes (21), and the side walls of the cabinet body (11) are provided with air inlet holes (20).

3. The cabinet-type centrifugal fan with stable operation according to claim 2, characterized in that: A first filter plate (22) is installed in the air outlet (21), and a second filter plate (23) is installed in the air inlet (20).

4. The cabinet-type centrifugal fan with stable operation according to claim 3 is characterized in that: The air outlet of the volute (19) is located directly below the air outlet hole (21) and the rubber ring (24) is in contact with the top wall of the installation cavity (12).

5. The cabinet-type centrifugal fan with stable operation according to claim 3, characterized in that: The brackets (18) are provided with two brackets (18) and are symmetrically fixedly connected to the top wall of the base (14), and the volute (19) is fixedly connected between the two brackets (18).

6. The cabinet-type centrifugal fan with stable operation according to claim 5, characterized in that: The air inlet of the volute (19) is located on the side of the air inlet hole (20), and a through hole is provided on one of the brackets (18) close to the air inlet hole (20).

7. The cabinet-type centrifugal fan with stable operation according to claim 1, characterized in that: One end of the drive shaft (26) passes through the side wall of the volute (19) and extends into the volute (19), and the centrifugal impeller (29) is fixedly connected to one end of the drive shaft (26) located in the volute (19).

8. The cabinet-type centrifugal fan with stable operation according to claim 1, characterized in that: A plurality of annular grooves are provided on the first pulley (16) and the second pulley (27).

9. The cabinet-type centrifugal fan with stable operation according to claim 8, characterized in that: The belt (28) is composed of a plurality of small synchronous belts, and each of the synchronous belts is respectively sleeved in the annular groove.

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