Tunnel jet fan

Abstract

The utility model discloses a tunnel jet fan. The tunnel jet fan comprises a shell, a centrifugal impeller, a driving motor and a mounting frame, the shell is of a cylindrical structure, a mounting frame is mounted in the shell, a driving motor is mounted on the mounting frame, and a centrifugal impeller is mounted at the output end of the driving motor; the centrifugal impeller comprises a middle disc body, blades and a wind scooper, the leeside of the middle disc body is connected with the output end of the driving motor, at least three blades are installed on the edge of the middle disc body, the wind scooper is installed on the windward side of the middle disc body, and the windward side of the wind scooper is an arc surface. The tunnel jet fan solves the problem that in the prior art, due to the fact that a middle disc body of a centrifugal impeller is of a disc-shaped structure, the airflow blocking force is too large.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fan, concretely relates to a tunnel jet fan. BACKGROUND

[0002] Chinese patent discloses a kind of application No. CN201510807624.9's ultra-thin highway tunnel jet fan, the ultra-thin highway tunnel jet fan, belongs to fan manufacturing technical field, including the current collector installed in the shell, centrifugal impeller, outer rotor motor, centrifugal impeller is directly installed on outer rotor motor, current collector and centrifugal impeller are sequentially installed in shell along air inlet direction, and the air outlet of current collector enters into the air inlet of centrifugal impeller.

[0003] The above-mentioned ultra-thin highway tunnel jet fan although realizes the function of small volume, but the ultra-thin highway tunnel jet fan still has the following shortcomings: in the ultra-thin highway tunnel jet fan, centrifugal impeller is located in shell, centrifugal impeller includes: intermediate disc body and blade, intermediate disc body is disc-shaped structure, a plurality of blades are installed on intermediate disc body, intermediate disc body is connected with the output shaft of outer rotor motor, when airflow passes through shell, the intermediate disc body of disc-shaped structure causes the problem that airflow resistance is too large. UTILITY MODEL CONTENTS

[0004] The utility model provides a kind of tunnel jet fan, solves the problem that the airflow resistance is too large in prior art due to the intermediate disc body of centrifugal impeller is disc-shaped structure.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] The utility model discloses a kind of tunnel jet fan, comprising: shell, centrifugal impeller, drive motor and mounting bracket;Shell is cylindrical structure, mounting bracket is installed in shell, drive motor is installed on mounting bracket, the output end of drive motor is installed centrifugal impeller;Centrifugal impeller includes: intermediate disc body, blade and wind scooper, intermediate disc body leeward surface is connected with the output end of drive motor, at least three blades are installed on the edge of intermediate disc body, wind scooper is installed on the windward surface of intermediate disc body, the windward surface of wind scooper is circular surface.

[0007] Preferably, wind scooper covers the windward surface of intermediate disc body entirely.

[0008] Preferably, the air inlet direction in shell is X direction, the maximum outer diameter of the shell of drive motor in the section perpendicular to X is d1, the outer diameter of wind scooper in the section perpendicular to X is d2, d2 is greater than d1.

[0009] Preferably, the mounting frame comprises a first fixing plate fixed to the inner wall of the shell, the first fixing plate being parallel to the X direction, and the outer shell of the driving motor being mounted on the first fixing plate.

[0010] Preferably, the mounting frame further comprises a second fixing plate, the middle part of the first fixing plate being fixed to the inner wall of the shell through the second fixing plate, and the second fixing plate being parallel to the X direction.

[0011] Preferably, the shell comprises a first cylindrical muffler, a second cylindrical muffler and an intermediate shell, the intermediate shell being in a cylindrical structure, the first cylindrical muffler being communicated to one end of the intermediate shell, the second cylindrical muffler being communicated to the other end of the intermediate shell, and the centrifugal impeller, the driving motor and the mounting frame being mounted in the intermediate shell.

[0012] Preferably, the first cylindrical muffler is mounted with a first mesh cover on the side away from the intermediate shell, and the second cylindrical muffler is mounted with a second mesh cover on the side away from the intermediate shell.

[0013] Preferably, the intermediate shell is provided with a convex ring at both ends, and the convex ring is mounted with the first cylindrical muffler or the second cylindrical muffler.

[0014] Compared with the prior art, the tunnel jet fan has the following beneficial effects:

[0015] In the present application, the air guide cover is mounted on the intermediate disc body in the centrifugal impeller, the windward surface of the air guide cover is a circular arc surface, when the airflow flows to the air guide cover, the windward surface of the air guide cover guides the airflow to the outside of the air guide cover, thereby reducing the blocking force on the airflow, compared with the windward surface of the planar intermediate disc body in the prior art, the loss of the airflow is reduced, and most of the airflow can flow from both sides of the intermediate disc body in the centrifugal fan, thereby ensuring a large air output.

[0016] Other advantages, objects and features of the present application will be apparent from the following description, and will be understood by those skilled in the art through a study of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 Fig. 1 is a structural schematic view of a tunnel jet fan.

[0018] Fig. 2 Fig. 2 is a sectional view of the tunnel jet fan.

[0019] Fig. 3 Fig. 3 is a structural schematic view of the tunnel jet fan partially cut open.

[0020] Reference numerals: 1. Housing; 11. First cylindrical silencer; 12. Second cylindrical silencer; 13. Intermediate housing; 130. First mesh cover; 14. Second mesh cover; 15. Centrifugal impeller; 2. Intermediate disc; 21. Blade; 22. Air guide cover; 23. Drive motor; 3. Mounting bracket; 4. First fixing plate; 41. Second fixing plate; 42. Detailed Implementation

[0021] To make the technical means, creative features, achieved objectives and functions of this utility model clearer and easier to understand, the utility model will be further described below with reference to the accompanying drawings and specific embodiments:

[0022] like Figs. 1 to 3 As shown, this utility model discloses a tunnel jet fan, including: a shell 1, a centrifugal impeller 2, a drive motor 3, and a mounting frame 4; the shell 1 has a cylindrical structure, and the mounting frame 4 is installed inside the shell 1. The drive motor 3 is installed on the mounting frame 4, and the centrifugal impeller 2 is installed at the output end of the drive motor 3; the centrifugal impeller 2 includes: an intermediate disc 21, blades 22, and a wind guide shroud 23. The leeward side of the intermediate disc 21 is connected to the output end of the drive motor 3. At least three blades 22 are installed on the edge of the intermediate disc 21, and the wind guide shroud 23 is installed on the windward side of the intermediate disc 21. The windward side of the wind guide shroud 23 is an arc surface.

[0023] The air guide shroud 23 completely covers the windward surface of the intermediate disc 21. After the air guide shroud 23 is completely covered, the windward surface of the intermediate disc 21 will not come into contact with the airflow, thus reducing airflow loss.

[0024] The air intake direction inside housing 1 is the X direction. The maximum outer diameter of the drive motor 3's housing on a section perpendicular to X is d1, and the outer diameter of the air guide shroud 23 on the same section is d2, where d2 is greater than d1. Since the airflow immediately flows towards the drive motor 3 after passing through the centrifugal impeller 2, and the air guide shroud 23 has already directed the airflow to the area between the edge of the intermediate disc 21 and the inner wall of housing 1, the d1 of the drive motor 3 is controlled to be smaller than the d2 of the air guide shroud 23 in this product. This prevents the airflow from rushing towards the drive motor 3's housing and causing airflow loss, further ensuring that the airflow passes smoothly through housing 1.

[0025] Mounting bracket 4 includes: a first fixing plate 41, which is fixed to the inner wall of housing 1, and the direction of the first fixing plate 41 is parallel to the X direction. The housing of drive motor 3 is mounted on the first fixing plate 41. The second fixing plate 42 not only mounts drive motor 3 but also ensures that airflow is not obstructed. The phrase "the direction of the second fixing plate 42 is parallel to the X direction" refers to the direction of the wider side of the second fixing plate 42. This way, when airflow passes through, only the smaller side of the second fixing plate 42 faces the wind, reducing airflow loss.

[0026] The mounting frame 4 further comprises a second fixed plate 42, the middle part of the first fixed plate 41 is fixed on the inner wall of the shell 1 through the second fixed plate 42 away from the driving motor 3, and the direction of the second fixed plate 42 is parallel to the X direction. The second fixed plate 42 not only reinforces the first fixed plate 41, but also realizes that the airflow is not blocked. In the "the direction of the second fixed plate 42 is parallel to the X direction", the direction of the second fixed plate 42 is the direction of the wider surface of the second fixed plate 42. In this way, when the airflow passes through, only the smaller surface of the second fixed plate 42 faces the wind, reducing the loss of airflow.

[0027] The shell 1 comprises a first cylindrical muffler 11, a second cylindrical muffler 12 and an intermediate shell 13, the intermediate shell 13 is a cylindrical structure, one end of the intermediate shell 13 is communicated with the first cylindrical muffler 11, the other end of the intermediate shell 13 is communicated with the second cylindrical muffler 12, and the centrifugal impeller 2, the driving motor 3 and the mounting frame 4 are installed in the intermediate shell 13. The first cylindrical muffler 11 and the second cylindrical muffler 12 have the effect of muffling and reducing noise.

[0028] The first cylindrical muffler 11 is installed with a first mesh cover 14 away from the intermediate shell 13, and the second cylindrical muffler 12 is installed with a second mesh cover 15 away from the intermediate shell 13. The first mesh cover 14 and the second mesh cover 15 block impurities from entering the shell 1 and causing damage to the centrifugal impeller 2.

[0029] The intermediate shell 13 protrudes with a convex ring 130 at both ends, and the convex ring 130 is installed with the first cylindrical muffler 11 or the second cylindrical muffler 12. The convex ring 130 provides a mounting basis for the first cylindrical muffler 11 and the second cylindrical muffler 12.

[0030] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A tunnel jet fan, characterized in that, include: The casing (1), centrifugal impeller (2), drive motor (3), and mounting bracket (4) are included. The housing (1) is a cylindrical structure. A mounting bracket (4) is installed inside the housing (1). A drive motor (3) is installed on the mounting bracket (4). A centrifugal impeller (2) is installed at the output end of the drive motor (3). The centrifugal impeller (2) includes: an intermediate disc (21), blades (22) and a wind guide shroud (23). The leeward side of the intermediate disc (21) is connected to the output end of the drive motor (3). At least three blades (22) are installed on the edge of the intermediate disc (21). A wind guide shroud (23) is installed on the windward side of the intermediate disc (21). The windward side of the wind guide shroud (23) is an arc surface.

2. The tunnel jet fan according to claim 1, characterized in that, The air guide shroud (23) completely covers the windward side of the middle plate (21).

3. The tunnel jet fan according to claim 1 or 2, characterized in that, The air intake direction inside the housing (1) is the X direction. The maximum outer diameter of the outer shell of the drive motor (3) on the cross section perpendicular to X is d1, and the outer diameter of the air guide shroud (23) on the cross section perpendicular to X is d2, where d2 is greater than d1.

4. The tunnel jet fan according to claim 3, characterized in that, The mounting bracket (4) includes: a first fixing plate (41), which is fixed on the inner wall of the housing (1), and the direction of the first fixing plate (41) is parallel to the X direction. The housing of the drive motor (3) is mounted on the first fixing plate (41).

5. The tunnel jet fan according to claim 4, characterized in that, The mounting bracket (4) also includes a second fixing plate (42). The middle part of the first fixing plate (41) is fixed to the inner wall of the housing (1) through the second fixing plate (42) on the side away from the drive motor (3). The direction of the second fixing plate (42) is parallel to the X direction.

6. The tunnel jet fan according to claim 5, characterized in that, The housing (1) includes: a first cylindrical silencer (11), a second cylindrical silencer (12) and an intermediate housing (13). The intermediate housing (13) is a cylindrical structure. One end of the intermediate housing (13) is connected to the first cylindrical silencer (11), and the other end of the intermediate housing (13) is connected to the second cylindrical silencer (12). A centrifugal impeller (2), a drive motor (3) and a mounting bracket (4) are installed inside the intermediate housing (13).

7. The tunnel jet fan according to claim 6, characterized in that, The first cylindrical silencer (11) has a first mesh cover (14) installed on the side away from the intermediate shell (13), and the second cylindrical silencer (12) has a second mesh cover (15) installed on the side away from the intermediate shell (13).

8. The tunnel jet fan according to claim 7, characterized in that, The middle shell (13) has protruding rings (130) at both ends, and the protruding rings (130) are used to install the first cylindrical silencer (11) or the second cylindrical silencer (12).

Images