Bidirectional vortex centrifugal fan

Abstract

The utility model discloses a bidirectional vortex centrifugal fan which comprises a double-head driving device, the double-head driving device comprises a double-head rotating shaft and a driving assembly driving the double-head rotating shaft to rotate, centrifugal impellers are fixedly installed at the outer ends of the double-head rotating shaft, and the rotating directions of blades of the two centrifugal impellers are opposite. Two symmetrical fan shells fixedly connected with the driving assembly are arranged on the outer sides of the two centrifugal impellers, the two fan shells are each provided with an air inlet and an air outlet, the air outlets are connected with the fan shells through rotating mechanisms, each rotating mechanism comprises a rotating cover capable of rotating around the axis of the corresponding double-end rotating shaft, and the air outlets are formed in the outer sides of the rotating covers; annular sliding grooves are formed in the two sides of the fan shell, and annular sliding blocks matched with the annular sliding grooves are formed in the inner side of the rotating cover. The two-way air flow adjusting device achieves two-way air flow adjustment, simplifies the system structure, reduces cost, improves energy efficiency, and is suitable for occasions needing two-way air flow adjustment, such as a ventilation system, an air conditioning system, a road sweeping vacuum sweeper system and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to air fan technical field, especially a kind of bidirectional vortex centrifugal fan. BACKGROUND

[0002] Traditional centrifugal fan usually adopts single-shaft single-impeller structure, airflow direction is single, cannot satisfy the demand of bidirectional airflow in some special occasions. For example, in some equipment needing to carry out air intake and exhaust simultaneously, two independent centrifugal fans are needed, which undoubtedly increases the cost and volume of equipment. UTILITY MODEL CONTENT

[0003] The utility model aims at overcoming the insufficient of prior art, provide a kind of bidirectional vortex centrifugal fan, can realize bidirectional airflow control, simple structure, high efficiency.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a kind of bidirectional vortex centrifugal fan, including double-end driving device, the double-end driving device includes double-end rotating shaft and the driving component of driving double-end rotating shaft rotation, the centrifugal impeller is fixedly installed at the outer end of double-end rotating shaft, the blade rotation direction of two centrifugal impellers is opposite, two the fan housings of the symmetrical setting of being fixedly connected with driving component are provided on the outer side of two centrifugal impellers, two the fan housings are equipped with air inlet and air outlet, the air outlet is connected with fan housing by rotating mechanism, the rotating mechanism includes the rotating cover that can rotate around double-end rotating shaft axis line, the air outlet is formed on the outer side of rotating cover, annular slide is formed on the both sides of fan housing, annular slide is formed on the inner side of rotating cover. By rotating rotating cover, the direction of air outlet can be adjusted, form arbitrary angle, after air outlet is adjusted to the angle needed, rotating cover is fixed with fan housing by bolt.

[0005] As preferred, the driving component is one or more combinations of double-end motor, double-end hydraulic motor, belt pulley transmission, bevel gear transmission. Through different driving modes, different rotational speed and torque output can be realized, to meet different use requirements.

[0006] As preferred, the direction of two air inlets is parallel to the direction of double-end rotating shaft axis. This design makes airflow enter fan smoothly, reduces airflow loss, improves the efficiency of fan.

[0007] As preferred, flange is fixedly installed at the air inlet and air outlet of fan housing.

[0008] As preferred, guide groove is arranged on the inner wall of fan housing. Guide groove can guide airflow, reduce vortex and turbulence, improve the efficiency and stability of fan.

[0009] As preferred, the driving assembly is connected with a control system, which automatically adjusts the rotating speed and direction of the centrifugal impeller according to external sensor signals.

[0010] As preferred, an air filtering device is arranged at the air inlet of the fan housing.

[0011] Advantages

[0012] The double-head driving device and the centrifugal impellers with opposite rotation directions are adopted, bidirectional airflow control is realized, the structure is compact, the efficiency is high, and space is saved; the rotating mechanism can adjust the direction of the air outlet, form any angle, and meet different use requirements; the flow guide grooves are arranged on the inner wall of the fan housing, can guide airflow, reduce vortex and turbulence, improve the efficiency and stability of the fan; the driving assembly is connected with the control system, automatic adjustment can be realized, and accurate airflow control requirements can be met; the air filtering device is arranged at the air inlet, can filter the air entering the fan, and prolong the service life of the fan. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is a sectional view schematic view in the fan housing of the utility model.

[0015] In the drawing: 1, double-head driving device; 2, centrifugal impeller; 3, fan housing; 3-1, annular sliding groove; 4, air inlet; 5, air outlet; 6, rotating cover; 6-1, annular sliding block. DETAILED DESCRIPTION

[0016] Combining with the drawings Figures 1-2 Further illustrate the bidirectional vortex centrifugal fan of the utility model.

[0017] As Figure 1 The utility model provides a kind of bidirectional vortex centrifugal fan, including double-head driving device 1, double-head driving device 1 includes double-head shaft and the driving assembly of driving double-head shaft rotation, centrifugal impeller 2 is fixedly installed at double-head shaft outer end, the blade rotation direction of two centrifugal impellers 2 is opposite, two centrifugal impellers 2 outer side are provided with two symmetrical wind fan housings 3 connected with driving assembly fixedly, two wind fan housings 3 are all equipped with air inlet 4 and air outlet 5, air outlet 5 is connected with wind fan housing 3 by rotating mechanism, rotating mechanism includes the rotating cover 6 that can rotate around double-head shaft axis line, rotating cover 6 outside is formed with air outlet 5, annular sliding groove 3-1 is formed on the both sides of wind fan housing 3, annular sliding block 6-1 is formed on the inner side of rotating cover 6 and cooperates with annular sliding groove 3-1.

[0018] Further, the driving assembly is one or a combination of double-head motor, double-head hydraulic motor, belt pulley transmission and bevel gear transmission.

[0019] Further, the directions of the two air inlets 4 are parallel to the direction of the double-head rotating shaft axis.

[0020] Further, flanges are fixedly installed at the air inlets 4 and the air outlets 5 of the fan shell 3.

[0021] Further, the inner wall of the fan shell 3 is provided with a flow guide groove.

[0022] Further, the driving assembly is connected with a control system, and the control system automatically adjusts the rotating speed and direction of the centrifugal impellers 2 according to external sensor signals.

[0023] Further, the air inlet 4 of the fan shell 3 is provided with an air filter device.

[0024] The working principle of the utility model is as follows: when the driving assembly is started, the double-head rotating shaft drives the two centrifugal impellers 2 to rotate, and since the rotating directions of the blades of the two centrifugal impellers 2 are opposite, the directions of the air flows generated by the two centrifugal impellers 2 are opposite. The air flows enter the fan shell 3 from the air inlets 4, are accelerated by the centrifugal impellers 2, and are discharged from the air outlets 5. Through the rotating mechanism 8, the direction of the air outlet 7 can be adjusted to realize bidirectional air flow control.

[0025] The above only describes the preferred embodiments of the utility model, and all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the utility model.

Claims

1. A bi-directional vortex centrifugal fan characterized by, The utility model provides a double -end driving device, the double -end driving device includes double -end rotating shaft and drive component that drives double -end rotating shaft rotation, the outer end of double -end rotating shaft is fixedly installed with centrifugal impeller, the blade rotation direction of two centrifugal impellers is opposite, and the outer side of two centrifugal impellers is provided with two symmetrical fan housings of fixed connection with drive component, two fan housings are equipped with air inlet and air outlet, the air outlet is connected with fan housing through rotating mechanism, the rotating mechanism includes the rotating cover that can rotate around double -end rotating shaft axis line, the air outlet is shaped on the outside of rotating cover, the annular slide groove is shaped on the both sides of fan housing, and the annular slide groove is matched with the annular slide that is shaped on the inside of rotating cover.

2. A bi-directional vortex centrifugal fan as claimed in claim 1, wherein, The drive assembly is one or more combinations of double-end motor, double-end hydraulic motor, belt pulley transmission and bevel gear transmission.

3. A bi-directional vortex centrifugal fan as claimed in claim 1, wherein, The directions of the two air inlets are parallel to the direction of the double-end rotating shaft axis.

4. A bi-directional vortex centrifugal fan as claimed in claim 1, wherein, Flanges are fixedly installed at the air inlets and air outlets of the fan housings.

5. A bi-directional vortex centrifugal fan as claimed in claim 1, wherein, The inner walls of the fan housings are provided with flow guide grooves.

6. A bi-directional vortex centrifugal fan as claimed in claim 1, wherein, The drive assembly is connected with a control system, which automatically adjusts the rotating speed and direction of the centrifugal impellers according to external sensor signals.

7. A bi-directional vortex centrifugal fan as claimed in claim 1, wherein, Air filtering devices are arranged at the air inlets of the fan housings.

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