Multi-fan-blade long-distance air supply device

Abstract

The utility model provides a multi-fan-blade long-distance air supply device which comprises at least two fans, the fans are installed in a butt joint mode along the axes of the fans, and air inlets and air outlets of every two adjacent fans are correspondingly connected. The airflow flowing directions of the connected fans are the same. In the airflow flowing direction, airflow enters from the air inlet of the fan at the rear end and flows out from the air outlet of the fan at the front end, and the air outlet of the fan at the front end is provided with a fairing. And the central axes of the fan and the fairing are the same. The air supply device is provided with at least two fans, and each fan can independently control the rotating speed, so that the air supply speed, the air pressure and the air volume are adjusted, and the air supply efficiency is improved. In addition, due to the arrangement of the multiple draught fans, the large air outlet amount and high air pressure can be guaranteed under the condition that the rotating speed is low, high-rotating-speed air supply is avoided, and then noise and vibration caused by the high rotating speed can be avoided. The air supply efficiency is greatly improved; and the service life of the fan is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of air supply device technical field, specifically a kind of multi-leaf long-distance air supply device. BACKGROUND

[0002] In the existing production and living scene, the application of air supply device is very extensive, for specific space to supply air or exhaust air. Usually, to achieve rapid air supply or air suction, it is necessary to increase the speed of fan. However, when the speed of fan is higher, not only the power consumption will increase significantly, but also the vibration and noise of fan will increase. Vibration is harmful to the fan, and long-term vibration environment can cause parts to loosen, and even accelerate the wear of parts. In addition, when the fan is at high speed, the impeller of the fan will also deform, which will reduce the air supply efficiency and cannot achieve the expected air supply effect.

[0003] In addition, in the traditional air supply device, there is usually only one set of fan, and the airflow driven by the rotation of the fan blade will decrease in speed after flowing a certain distance inside the fan housing. Therefore, the airflow flowing out of the air outlet has low speed, so it cannot achieve high air outlet speed and long-distance air supply.

[0004] Therefore, the skilled in the art urgently needs a fan device with high efficiency air supply, high air outlet speed and low noise. INVENTION CONTENTS

[0005] The utility model aims at overcoming the defects of prior art, and provides a kind of multi-leaf long-distance air supply device, to solve the problems of small air pressure, low air supply efficiency, slow air outlet speed and high noise in prior art.

[0006] The utility model provides a kind of multi-leaf long-distance air supply device, which comprises at least two fans, the fan is connected along its axis, and the air inlet and air outlet of adjacent two fans are connected correspondingly;The airflow flowing direction of the completed connected fan is the same;Along the airflow flowing direction, the airflow enters from the air inlet of the rear-end fan, and flows out from the air outlet of the front-end fan, and the air outlet of the front-end fan is provided with a fairing;The center axis of the fan and the fairing is the same.

[0007] Further, the fan comprises a fan housing, a motor support for fixing a motor is fixedly arranged on the inner wall of the fan housing, a fan blade is fixedly arranged at the end of the rotating shaft of the motor for driving the rotation of the fan blade.

[0008] Further, the motors of adjacent two fans rotate reversely.

[0009] Further, the motor of each fan can be controlled independently.

[0010] In the embodiment of the utility model, the adjacent two fans are fixedly connected through the connecting ring.

[0011] Further, a plurality of air inlets are evenly arranged on the outer wall circumference of the connecting ring; the air inlets are arranged obliquely, and the air inlet direction is towards the airflow flowing direction.

[0012] In the embodiment of the utility model, a flow guide cover is arranged between the fan air outlet and the fairing and / or a flow guide cover is arranged between the fan air outlet and the connecting ring; a plurality of flow guide ribs are evenly arranged in the circumferential direction of the flow guide cover, and the flow guide ribs extend outward from the shaft center along the radial direction.

[0013] In the embodiment of the utility model, the inner diameter of the fairing gradually decreases along the airflow flowing direction, for pressure increase and airflow adjustment.

[0014] The utility model provides a kind of multi-leaf long-distance air supply device, which comprises at least two fans, the fan is docked installation along its axis, and the air inlet and air outlet of adjacent two fans are connected correspondingly;The airflow flowing direction of the completed fan is the same;Along the airflow flowing direction, airflow enters from the air inlet of the fan at rear end, and flows out from the air outlet of the fan at front end;Along the airflow flowing direction, flow guide cover is arranged at the air outlet of the fan at front end;A plurality of flow guide ribs are evenly arranged in the circumferential direction of the flow guide cover, and the flow guide ribs extend outward from the shaft center along the radial direction.

[0015] Further, the fan comprises a fan shell, a motor support for fixing a motor is fixedly arranged on the inner wall of the fan shell, a fan blade is fixedly arranged at the end of the rotating shaft of the motor for driving the fan blade to rotate and supply air;The motors of adjacent two fans rotate reversely.

[0016] According to the above embodiment, the multi-leaf long-distance air supply device provided by the utility model has at least the following benefits: the air supply device is provided with at least two fans, the two fans can be controlled independently, thereby adjusting the speed, air pressure and air volume of air supply, and improving the air supply efficiency.

[0017] In addition, the arrangement of multiple fans can ensure larger air volume and high air pressure at low speed, avoid high-speed air supply, and thereby avoid noise and vibration caused by high speed. The air supply efficiency is greatly improved, and the service life of the fan is prolonged.

[0018] It should be understood that the above general description and the following specific embodiments are only exemplary and explanatory, and cannot limit the scope of the utility model claimed. BRIEF DESCRIPTION OF DRAWINGS

[0019] The following drawings form part of the specification. Together with the description, they serve to explain the principles of the present application.

[0020] Figure 1 A cross-sectional view of the multi-leaf long-distance air supply device provided by the present application.

[0021] Figure 2 An exploded view of the multi-leaf long-distance air supply device provided by the present application.

[0022] Figure 3 A cross-sectional view of the multi-leaf long-distance air supply device provided by the present application.

[0023] Figure 4 An exploded view of the multi-leaf long-distance air supply device provided by the present application.

[0024] Figure 5 A cross-sectional view of the multi-leaf long-distance air supply device provided by the present application.

[0025] Figure 6 An exploded view of the multi-leaf long-distance air supply device provided by the present application.

[0026] Figure 7 A cross-sectional view of the multi-leaf long-distance air supply device provided by the present application.

[0027] Figure 8 An exploded view of the multi-leaf long-distance air supply device provided by the present application.

[0028] Figure 9 A cross-sectional view of the multi-leaf long-distance air supply device provided by the present application.

[0029] Figure 10 An exploded view of the multi-leaf long-distance air supply device provided by the present application.

[0030] Figure 11 A cross-sectional view of the multi-leaf long-distance air supply device provided by the present application.

[0031] Figure 12 An exploded view of the multi-leaf long-distance air supply device provided by the present application.

[0032] Figure 13 A cross-sectional view of the multi-leaf long-distance air supply device provided by the present application.

[0033] Figure 14 An exploded view of the multi-leaf long-distance air supply device provided by the present application.

[0034] Figure 15 A cross-sectional view of Embodiment 8 of the multi-blade long-distance air supply device provided by this utility model.

[0035] Figure 16 An exploded view of Embodiment 8 of the multi-blade long-distance air supply device provided by this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1-Fan, 2-Fairing, 3-Connecting ring, 4-Guide shield;

[0038] 11-Fan housing, 12-Motor bracket, 13-Motor, 14-Fan blade, 15-Fan housing air inlet;

[0039] 31 - Air inlet, 32 - Reinforcing rib. Detailed Implementation

[0040] Various exemplary embodiments of the present invention are now described in detail. This detailed description should not be considered as a limitation of the present invention, but should be understood as a more detailed description of certain aspects, features and implementations of the present invention.

[0041] Various improvements and variations can be made to the specific embodiments described in this utility model without departing from the scope or spirit of this utility model, which will be obvious to those skilled in the art. Other embodiments derived from this utility model description will also be obvious to those skilled in the art. This application specification and embodiments are merely exemplary.

[0042] This utility model provides a multi-blade long-distance air supply device, such as Figure 1 and 2 The diagram shown is a structural schematic of an embodiment of the air supply device. In a specific embodiment, the air supply device includes at least two fans 1, which are installed together along their axes. The air inlets and outlets of adjacent fans 1 are connected accordingly; that is, in two adjacent fans, along the airflow direction, the outlet of the rear fan 1 is connected to the air inlet of the front fan. The airflow direction of all connected fans 1 is the same.

[0043] Along the airflow direction, the airflow enters from the air inlet of the rear fan 1 and exits from the air outlet of the front fan 1. The air outlet of the front fan 1 is equipped with a shunting hood 2, and the central axes of the fan 1 and the shunting hood 2 are the same. In this embodiment, the inner diameter of the shunting hood 2 gradually decreases along the airflow direction to rectify the airflow and increase the fan's air pressure and outlet velocity.

[0044] In the embodiment, the air supply device comprises two fans 1, the two fans 1 are butt-jointed along the same axis and have the same airflow direction.

[0045] Further, the two adjacent fans 1 are fixedly connected through the connecting ring 3.

[0046] Further, the outer wall of the connecting ring 3 is uniformly provided with a plurality of air inlets 31, the air inlets 31 are obliquely arranged, the air inlet direction is towards the airflow direction, the air inlet efficiency and the air inlet amount of the airflow are improved, and then the air outlet amount of the air supply device is improved.

[0047] In addition, the outer wall of the connecting ring 3 is further provided with a reinforcing rib 32 for improving the structural strength of the connecting ring 3.

[0048] In the embodiment, the fan shell 11 of the rear-end fan 1 is fixedly connected with one end of the connecting ring 3, the other end of the connecting ring 3 is fixedly connected with the air inlet of the fan shell 11 of the front-end fan 1, and the air outlet of the fan shell 11 of the front-end fan 1 is fixedly connected with the fairing 2.

[0049] In the embodiment, the motors 13 of the two adjacent fans 1 are relatively reversely rotated, that is, one motor 13 rotates clockwise and the other motor 13 rotates counterclockwise.

[0050] In the embodiment, the motor 13 of each fan 1 can be controlled individually, the rotating speed of different motors 13 is controlled, the air pressure in the fan shell 11 is improved, and the air supply efficiency is improved.

[0051] Further, along the airflow direction, the fan shell 11 of the rear-end fan 1 is provided with a plurality of fan shell air inlets 15, the fan shell air inlets 15 are located on the air inlet side of the fan shell 11 of the fan 14 in the axial direction.

[0052] As shown in FIG. 1, the air supply device comprises a fairing 2, a connecting ring 3 and two fans 1. Figure 3 and 4It is shown that the structure schematic diagram of the multi-leaf long-distance air supply device embodiment two provided by the utility model. In the specific implementation, the embodiment and Figure 1 The difference between the embodiment and the embodiment shown in the figure is that, in the embodiment, the fan 1 outlet and the fairing 2 are provided with a flow guide cover 4, that is, the fan shell 11 outlet of the front-end fan 1 and the fairing 2 are provided with the flow guide cover 4. Further, a plurality of flow guide ribs are uniformly arranged in the circumferential direction of the flow guide cover 4, the flow guide ribs extend outward from the shaft center in the radial direction, and are used for adjusting the flow direction of the airflow, reducing the turbulence of the airflow, and improving the flow speed of the airflow.

[0053] As shown in the figure, Figure 5 and 6 It is shown that the structure schematic diagram of the multi-leaf long-distance air supply device embodiment three provided by the utility model. In the specific implementation, the embodiment and Figure 3 The difference between the embodiment and the embodiment shown in the figure is that, in the embodiment, the fan 1 outlet and the fairing 2 are provided with a flow guide cover 4, that is, the fan shell 11 outlet of the front-end fan 1 and the fairing 2 are provided with the flow guide cover 4. Further, a plurality of flow guide ribs are uniformly arranged in the circumferential direction of the flow guide cover 4, the flow guide ribs extend outward from the shaft center in the radial direction, and are used for adjusting the flow direction of the airflow, reducing the turbulence of the airflow, and improving the flow speed of the airflow.

[0054] As shown in the figure, Figure 7 and 8 It is shown that the structure schematic diagram of the multi-leaf long-distance air supply device embodiment four provided by the utility model. In the specific implementation, the embodiment and Figure 1 The difference between the embodiment and the embodiment shown in the figure is that, in the embodiment, the fan 1 outlet and the fairing 2 are provided with a flow guide cover 4, that is, the fan shell 11 outlet of the front-end fan 1 and the fairing 2 are provided with the flow guide cover 4. Further, a plurality of flow guide ribs are uniformly arranged in the circumferential direction of the flow guide cover 4, the flow guide ribs extend outward from the shaft center in the radial direction, and are used for adjusting the flow direction of the airflow, reducing the turbulence of the airflow, and improving the flow speed of the airflow.

[0055] As shown in the figure, Figure 9 and 10 It is shown that the structure schematic diagram of the multi-leaf long-distance air supply device embodiment five provided by the utility model. In the specific implementation, the embodiment and Figure 1 The difference between the embodiment and the embodiment shown in the figure is that, in the embodiment, the fan 1 outlet and the fairing 2 are provided with a flow guide cover 4, that is, the fan shell 11 outlet of the front-end fan 1 and the fairing 2 are provided with the flow guide cover 4. Further, a plurality of flow guide ribs are uniformly arranged in the circumferential direction of the flow guide cover 4, the flow guide ribs extend outward from the shaft center in the radial direction, and are used for adjusting the flow direction of the airflow, reducing the turbulence of the airflow, and improving the flow speed of the airflow.

[0056] As Figure 11 and 12 Figure 6 is a structural schematic diagram of a multi-leaf long-distance air supply device according to an embodiment of the present application. The embodiment differs from the embodiment shown in Figure 9 that the air supply device has three fans 1, and the three fans 1 are fixedly connected along the same axis.

[0057] Further, a flow guide cover 4 is arranged between the fan casing 11 air outlet of the front-end fan 1 and the fairing 2, a flow guide cover 4 is arranged between the fan casing 11 air outlet of the middle fan 1 and the connecting ring 3, and a flow guide cover 4 is arranged between the fan casing 11 air outlet of the rear-end fan 1 and the connecting ring 3.

[0058] Further, along the airflow direction, the fan casing 11 of the rear-end fan 1 has no fan casing air inlet 15, the fan casing 11 of the middle fan 1 has a plurality of fan casing air inlets 15, and the fan casing air inlets 15 are located on the air inlet side of the fan casing 11 of the fan blade 14 along the axial direction. In addition, the plurality of fan casing air inlets 15 are uniformly distributed on the outer wall of the circumference of the fan casing 11, and the fan casing air inlets 15 are inclinedly arranged, the air inlet direction is toward the airflow flowing direction, the air inlet efficiency and the air inlet amount of the airflow are improved, and the air outlet of the air supply device is improved.

[0059] As Figure 13 and 14 Figure 7 is a structural schematic diagram of a multi-leaf long-distance air supply device according to an embodiment of the present application. The embodiment differs from the embodiment shown in Figure 11 that the connecting ring 3 has no air inlet 31 on the outer wall circumference.

[0060] As Figure 15 and 16 Figure 8 is a structural schematic diagram of a multi-leaf long-distance air supply device according to an embodiment of the present application. The embodiment differs from the embodiment shown in Figure 3 that the air outlet of the front-end fan 1 has no fairing 2.

[0061] The above is only a specific embodiment of the present application, and any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present application shall fall within the scope of protection of the present application.

Claims

1. A multi-leaf air distribution device, comprising: The air supply device comprises at least two fans (1), the fans (1) are butt-jointed along their axes, the air inlets of the two adjacent fans (1) are connected with the air outlets correspondingly; The air flow directions of the connected fans (1) are the same; Along the air flow direction, the air enters the air inlet of the fan (1) at the rear end and flows out of the air outlet of the fan (1) at the front end, and the air outlet of the fan (1) at the front end is provided with a fairing (2); The central axes of the fan (1) and the fairing (2) are the same.

2. The multi-leaf air supply device according to claim 1, wherein The fan (1) comprises a fan shell (11), a motor support (12) for fixing a motor (13) is fixedly arranged on the inner wall of the fan shell (11), a fan blade (14) is fixedly arranged at the end of the rotating shaft of the motor (13), and the fan blade (14) is driven to rotate to supply air.

3. The multi-leaf air supply device according to claim 2, wherein The motors (13) of the two adjacent fans (1) rotate reversely relative to each other.

4. The multi-leaf air supply device according to claim 2, wherein The motor (13) of each fan (1) can be controlled individually.

5. The multi-leaf air supply device according to claim 1, wherein The two adjacent fans (1) are fixedly connected through a connecting ring (3).

6. The multi-leaf air supply device according to claim 5, wherein A plurality of air inlets (31) are uniformly arranged on the outer wall of the connecting ring (3); The air inlets (31) are arranged obliquely, and the air inlet direction is towards the air flow direction.

7. The multi-leaf air supply device according to claim 5, wherein A flow guide cover (4) is arranged between the air outlet of the fan (1) and the fairing (2), and / or a flow guide cover (4) is arranged between the air outlet of the fan (1) and the connecting ring (3); A plurality of flow guide ribs are uniformly arranged in the circumferential direction of the flow guide cover (4), and the flow guide ribs extend outward from the axis in the radial direction.

8. The multi-leaf air supply device according to claim 1, wherein The inner diameter of the fairing (2) gradually decreases along the air flow direction, for pressure boosting and air flow adjustment.

9. A multi-leaf air distribution device, comprising: The air supply device comprises at least two fans (1), the fans (1) are butt-jointed along their axes, the air inlets of the two adjacent fans (1) are connected with the air outlets correspondingly; The air flow directions of the connected fans (1) are the same; Along the air flow direction, the air enters the air inlet of the fan (1) at the rear end and flows out of the air outlet of the fan (1) at the front end; Along the air flow direction, a flow guide cover (4) is arranged at the air outlet of the fan (1) at the front end; A plurality of flow guide ribs are uniformly arranged in the circumferential direction of the flow guide cover (4), and the flow guide ribs extend outward from the axis in the radial direction.

10. The multi-leaf air supply device according to claim 9, wherein The fan (1) comprises a fan shell (11), a motor support (12) for fixing a motor (13) is fixedly arranged on the inner wall of the fan shell (11), a fan blade (14) is fixedly arranged at the end of the rotating shaft of the motor (13), and the fan blade (14) is driven to rotate to supply air; The motors (13) of the two adjacent fans (1) rotate reversely relative to each other.

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