Centrifugal fan easy to dissipate heat

Abstract

The utility model discloses a centrifugal fan easy to dissipate heat, which comprises a machine base, a motor main body and a fan main body are arranged on the machine base side by side, the fan main body comprises a volute, a fan shaft is rotatably connected in the volute, a follow-up wind wheel is arranged on the fan shaft, an air inlet is arranged on one end face of the volute, a main air outlet is arranged on the side face of the volute, and an air outlet is arranged on the other end face of the volute. The fan shaft extends out of the other end face of the volute and is provided with a driven synchronous wheel, a main shaft of the motor body is provided with a driving synchronous wheel, the driving synchronous wheel and the driven synchronous wheel are in transmission connection with a synchronous belt, the side face of the volute is further provided with an auxiliary air outlet, and the auxiliary air outlet is provided with an air outlet pipe. One end of the air outlet pipe is connected with the volute, and the other end faces the motor body. The centrifugal fan has the advantages of being easy to dissipate heat, long in service life, complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to a fan, and more specifically, to a centrifugal fan which is easy to dissipate heat. Background Art

[0002] Centrifugal fans are usually equipped with a motor that drives the wind wheel to rotate. Some motors are connected to the wind wheel shaft using a coupling, and the motor on this type of centrifugal fan is coaxial with the wind wheel shaft; some motors are connected to the wind wheel shaft using a synchronous wheel assembly, and the motor on this type of centrifugal fan is parallel to the wind wheel shaft.

[0003] A small number of centrifugal fans are in a long-term working state, the working environment is bad, the motor driving the wind wheel to rotate has a long running time and generates a lot of heat. If the heat is not dissipated in time, the service life of the motor will be seriously affected, and the overall effect will be poor. Based on this, the utility model proposes a centrifugal fan that is easy to dissipate heat. Utility Model Content

[0004] The utility model aims to overcome the above-mentioned deficiencies in the prior art and to provide a centrifugal fan which is easy to dissipate heat and has the characteristics of easy heat dissipation and long service life.

[0005] To solve the above technical problems, the purpose of the utility model is achieved as follows: the utility model involves a centrifugal fan that is easy to dissipate heat, including a machine base, on which a motor body and a fan body are arranged side by side, the fan body including a volute, a fan shaft is rotatably connected in the volute, and a follower wind wheel is provided on the fan shaft, an air inlet is provided on one end face of the volute, a main air outlet is provided on the side of the volute, the fan shaft extends out of the other end face of the volute and is provided with a driven synchronous wheel, an active synchronous wheel is provided on the main shaft of the motor body, and a synchronous belt is connected to the active synchronous wheel and the driven synchronous wheel for transmission, an auxiliary air outlet is also provided on the side of the volute, and an air outlet pipe is provided on the auxiliary air outlet, one end of the air outlet pipe is connected to the volute, and the other end faces the motor body.

[0006] The utility model is further configured as follows: the air outlet pipe extends along the tangential direction of the wind wheel.

[0007] In summary, the utility model has the following beneficial effects: the centrifugal fan with easy heat dissipation involved in the utility model arranges the motor body and the fan body into a side-by-side structure, and opens an auxiliary air outlet on the side of the volute, so that a part of the airflow formed in the volute can flow out from the auxiliary air outlet and blow on the surface of the motor body, thereby achieving the effect of rapid heat dissipation of the motor body, indirectly extending the service life of the equipment, with complete overall functions and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0009] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, rather than limiting the patent requirements of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0010] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0011] Example 1

[0012] See also Figure 1 As shown, a centrifugal fan with easy heat dissipation involved in this embodiment includes a machine base 1, on which a motor body 2 and a fan body 3 arranged side by side are provided, the fan body 3 includes a volute 31, a fan shaft 32 is rotatably connected in the volute 31, and a follower wind wheel 33 is provided on the fan shaft 32, an air inlet 34 is provided on one end face of the volute 31, a main air outlet 35 is provided on the side of the volute 31, the fan shaft 32 extends out of the other end face of the volute 31 and is provided with a driven synchronous wheel (not shown), an active synchronous wheel (not shown) is provided on the main shaft of the motor body 2, and a synchronous belt (not shown) is transmission-connected between the active synchronous wheel and the driven synchronous wheel, an auxiliary air outlet 36 is also provided on the side of the volute 31, and an air outlet pipe 37 is provided on the auxiliary air outlet 36, one end of the air outlet pipe 37 is connected to the volute 31, and the other end faces the motor body 2.

[0013] Furthermore, the air outlet pipe 37 extends along the tangential direction of the wind wheel 33 .

[0014] In this embodiment, when the motor body 2 is running, the fan shaft 32 is driven by the synchronous wheel assembly to drive the wind wheel 33 to rotate at high speed in the volute 31, and airflow is formed in the volute 31. Most of the airflow is discharged from the main air outlet 35 and a small part is discharged from the auxiliary air outlet 36. The airflow discharged from the auxiliary air outlet 36 flows along the air outlet 37 and is finally blown on the surface of the motor body 2 for heat dissipation.

[0015] The utility model relates to a centrifugal fan which is easy to dissipate heat. The centrifugal fan arranges a motor body and a fan body in a side-by-side structure, and opens an auxiliary air outlet on the side of the volute, so that a part of the airflow formed in the volute can flow out from the auxiliary air outlet and blow on the surface of the motor body, thereby achieving the effect of quickly dissipating the heat of the motor body, indirectly extending the service life of the equipment, and having complete overall functions and strong practicality.

[0016] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0017] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A centrifugal fan that is easy to dissipate heat, comprising a machine base, on which a motor body and a fan body are arranged side by side, the fan body comprising a volute, a fan shaft is rotatably connected in the volute, a follower wind wheel is arranged on the fan shaft, an air inlet is arranged on one end face of the volute, a main air outlet is arranged on the side face of the volute, the fan shaft extends out of the other end face of the volute and is provided with a driven synchronous wheel, an active synchronous wheel is arranged on the main shaft of the motor body, and a synchronous belt is connected to the active synchronous wheel and the driven synchronous wheel, characterized in that: An auxiliary air outlet is also provided on the side of the volute, and an air outlet pipe is provided on the auxiliary air outlet, one end of the air outlet pipe is connected to the volute, and the other end faces the motor body.

2. The centrifugal fan with easy heat dissipation according to claim 1, characterized in that: The air outlet pipe extends along the tangential direction of the wind wheel.

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