Fan shell and centrifugal fan

Abstract

The utility model relates to the technical field of fans, and discloses a fan shell and a centrifugal fan. The centrifugal fan comprises a fan shell, a turbine and a motor, the fan shell comprises an end cover, a first shell body and a second shell body, the end cover is installed on the first shell body, the first shell body is installed on the second shell body to form a turbine cavity for the turbine to rotate, the second shell body comprises an air guide part and an installation part, the motor comprises a machine shell, and the machine shell is installed on the installation part. The output end of the motor is connected with the turbine, the air guide part is arranged in the turbine cavity and arranged in the circumferential direction of the turbine, and the air guide part can guide air. According to the centrifugal fan, part of the volute and the front end cover of the shell of the motor are made into an integrated structure, namely, the second shell is directly provided with the mounting part for mounting the shell of the motor, so that the fit clearance between the front end cover of the shell of the motor and the volute is reduced, the front end of the shell of the motor is closer to the second shell, the running stability of the centrifugal fan is improved, and vibration and noise are reduced. Due to the arrangement of the air guide part, air introduced into the centrifugal fan can enter the turbine more easily.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field especially, relate to a fan casing and centrifugal fan. BACKGROUND

[0002] At present, centrifugal fan includes turbine, volute and motor, volute is hung on the front end cover of the casing of motor, turbine is arranged in volute, volute and the front end cover of the casing of motor are assembled together, and there will be fit clearance etc., so that the spacing between the front end cover of the casing of motor and volute increases, so that the stability of centrifugal fan operation is poor, and problems such as vibration and noise appear.

[0003] Therefore, it is urgent to provide a fan casing and centrifugal fan to solve the above problems. SUMMARY

[0004] Based on the above, the purpose of the utility model is to provide a fan casing to at least solve one of the above problems.

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

[0006] A fan casing, comprising an end cover, a first casing and a second casing, the end cover is installed on the first casing, the first casing is installed on the second casing to form a turbine cavity for the rotation of the turbine, the second casing comprises a wind guide part and a mounting part, the mounting part is configured to mount the casing of the motor, the wind guide part is arranged in the turbine cavity and along the circumference of the turbine, and the wind guide part can guide the wind.

[0007] Further, the wind guide part comprises a plurality of wind guide plates, each wind guide plate is arranged along the circumference of the turbine.

[0008] Further, the wind guide plate is in the shape of a circular arc.

[0009] Further, the first casing comprises a first volute part, the second casing comprises a second volute part, the end cover, the first volute part and the second volute part form the turbine cavity, and the mounting part is arranged at the center of the second volute part.

[0010] Further, the first volute part is provided with a port, the port is in communication with the turbine cavity, and the end cover is installed on the port.

[0011] Further, the end cover comprises a circular ring part, and the circular ring part is installed on the port.

[0012] Further, the end cover further comprises a protruding part, the protruding part is connected to the inner ring wall surface of the circular ring part, the protruding part protrudes away from the turbine to form a turbine wall surface arranged opposite to the turbine and adapted to the turbine.

[0013] Further, the mounting portion is provided with a mounting cavity, the mounting cavity is communicated with the turbine cavity, and the machine shell is mounted on the mounting cavity.

[0014] Further, the first shell body comprises a first air outlet portion, the second shell body comprises a second air outlet portion, the fan shell body is provided with an air inlet and an air outlet, the air inlet and the air outlet are communicated with the turbine cavity respectively, the air inlet is arranged on the end cover, and the air outlet is surrounded by the first air outlet portion and the second air outlet portion.

[0015] Based on the above, the centrifugal fan aims to solve at least one of the above problems.

[0016] To achieve the above purpose, the utility model adopts the following technical scheme:

[0017] A centrifugal fan comprises:

[0018] The fan shell body in any one of the above schemes;

[0019] A turbine is rotatably arranged in the turbine cavity.

[0020] A motor comprises a machine shell, the machine shell is mounted on the mounting portion, and the output end of the motor is connected with the turbine.

[0021] The utility model has the advantages of:

[0022] The centrifugal fan comprises a fan shell body, a turbine and a motor, the fan shell body comprises an end cover, a first shell body and a second shell body, the end cover is mounted on the first shell body, the first shell body is mounted on the second shell body to form a turbine cavity, the turbine is rotatably arranged in the turbine cavity, the second shell body comprises a wind guide portion and a mounting portion, the motor comprises a machine shell, the machine shell is mounted on the mounting portion, the output end of the motor is connected with the turbine, the wind guide portion is arranged in the turbine cavity and arranged along the circumference of the turbine, and the wind guide portion can guide wind. The front end cover of part of the volute and the machine shell of the motor is made into an integrated structure, namely, the mounting portion of the machine shell of the motor is directly arranged on the second shell body, the cooperation gap between the front end cover of the machine shell of the motor and the volute is reduced, the front end of the machine shell of the motor is closer to the second shell body, the stability of the centrifugal fan in operation is improved, vibration and noise are reduced. The wind guide portion is arranged, so that the wind introduced into the centrifugal fan can more easily enter the turbine, and the blowing efficiency of the centrifugal fan is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort. Among them:

[0024] Figure 1 is a structural schematic diagram of a centrifugal fan provided by the embodiment of the present application;

[0025] Figure 2 is a structural schematic diagram of a centrifugal fan without an end cover provided by the embodiment of the present application;

[0026] Figure 3 is a structural schematic diagram of an end cover provided by the embodiment of the present application;

[0027] Figure 4 is a structural schematic diagram of an end cover from another angle provided by the embodiment of the present application;

[0028] Figure 5 is a structural schematic diagram of a centrifugal fan without an end cover and a first shell provided by the embodiment of the present application;

[0029] Figure 6 is a structural schematic diagram of a first shell provided by the embodiment of the present application;

[0030] Figure 7 is a structural schematic diagram of a first shell from another angle provided by the embodiment of the present application;

[0031] Figure 8 is a structural schematic diagram of a second shell provided by the embodiment of the present application;

[0032] Figure 9 is a structural schematic diagram of a second shell from another angle provided by the embodiment of the present application;

[0033] Figure 10 is a structural schematic diagram of a centrifugal fan from another angle provided by the embodiment of the present application.

[0034] In the drawings:

[0035] 100, fan shell; 200, turbine; 300, motor; 301, shell;

[0036] 1, end cover; 2, first shell; 3, second shell; 4, turbine cavity; 5, air outlet;

[0037] 11, annular portion; 12, protruding portion; 13, rib plate; 21, first volute portion; 22, first air outlet portion; 31, second volute portion; 32, air guide portion; 33, mounting portion; 34, second air outlet portion;

[0038] 111, first connecting hole; 121, air inlet; 122, turbine wall surface; 211, first turbine cavity; 212, second connecting hole; 213, first assembly hole; 214, port; 311, second turbine cavity; 312, second assembly hole; 321, air guide plate; 331, mounting cavity. DETAILED DESCRIPTION

[0039] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0040] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, can be detachably connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0041] In the description of the utility model, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first feature and the second feature are in direct contact, or the first feature and the second feature are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] The technical scheme of the utility model will be further illustrated below in combination with the drawings and through specific embodiments.

[0043] As Figures 1-10As shown, the embodiment provides a centrifugal fan, which comprises a fan shell 100, a turbine 200 and a motor 300. The fan shell 100 comprises an end cover 1, a first shell 2 and a second shell 3. The end cover 1 is installed on the first shell 2, and the first shell 2 is installed on the second shell 3 to form a turbine cavity 4. The turbine 200 is rotationally arranged in the turbine cavity 4. The second shell 3 comprises a wind guide part 32 and a mounting part 33. The motor 300 comprises a motor shell 301, which is installed on the mounting part 33. The output end of the motor 300 is connected with the turbine 200. The wind guide part 32 is arranged in the turbine cavity 4 and is arranged along the circumference of the turbine 200. The wind guide part 32 can guide wind. The front end cover 1 of the motor shell 301 of the motor 300 is made into an integrated structure. That is, the mounting part 33 of the motor shell 301 of the motor 300 is directly arranged on the second shell 3. The cooperation gap between the front end cover of the motor shell 301 of the motor 300 and the volute is reduced. The front end of the motor shell 301 of the motor 300 is closer to the second shell 3. The stability of the centrifugal fan in operation is improved. The vibration and noise are reduced. The arrangement of the wind guide part 32 makes the wind introduced into the centrifugal fan more easily enter the turbine 200. The blowing efficiency of the centrifugal fan is improved.

[0044] As shown in the drawings, Figures 1-9 The first shell 2 comprises a first volute part 21. The second shell 3 comprises a second volute part 31. The end cover 1, the first volute part 21 and the second volute part 31 are assembled to form the turbine cavity 4.

[0045] Specifically, the first volute part 21 is provided with a first turbine cavity 211. The second volute part 31 is provided with a second turbine cavity 311. The first turbine cavity 211, the second turbine cavity 311 and a turbine wall surface 122 (to be described below) of the end cover 1 form the turbine cavity 4.

[0046] As shown in the drawings, Figures 1-4 , Figures 6-7 The first volute part 21 is provided with a port 214. The port 214 is in communication with the turbine cavity 4. That is, the port 214 is in communication with the first turbine cavity 211. The end cover 1 is installed on the port 214.

[0047] Specifically, the end cover 1 is provided with a first connecting hole 111. The first volute part 21 is provided with a second connecting hole 212. The first connecting hole 111 and the second connecting hole 212 are connected.

[0048] More specifically, the first connecting hole 111 and the second connecting hole 212 can be fastened and connected by fasteners.

[0049] Further, the number of the first connecting hole 111 and the second connecting hole 212 is multiple. The multiple second connecting holes 212 are arranged along the circumference of the port 214. The first connecting hole 111 and the second connecting hole 212 are correspondingly arranged.

[0050] As shown in Figure 3 and Figure 4 The end cover 1 comprises a ring portion 11, which is mounted on the port 214.

[0051] Further, the end cover 1 further comprises a protruding portion 12, which is connected to the inner ring wall surface of the ring portion 11 and protrudes away from the turbine 200 to form a turbine wall surface 122 which is oppositely arranged and adapted to the turbine 200. The shape of the turbine wall surface 122 can be adapted to the shape profile of the turbine 200 to prevent interference and reduce wind resistance when the turbine 200 rotates.

[0052] Further, the end cover 1 further comprises a rib plate 13, which is arranged on the outer wall surface of the protruding portion 12 away from the turbine 200, the outer wall surface and the turbine wall surface 122 being the inner and outer wall surfaces of the end cover 1, and the rib plate 13 is connected to the inner ring wall surface of the ring portion 11. The outer profile of the rib plate 13 is arranged according to the outer wall surface of the protruding portion 12. The arrangement of the rib plate 13 can increase the strength of the end cover 1.

[0053] Further, the rib plate 13 is in a plurality, and the plurality of rib plates 13 are arranged along the circumference of the ring portion 11.

[0054] As shown in Figure 5 The air guide portion 32 comprises a plurality of air guide plates 321, and each air guide plate 321 is arranged along the circumference of the turbine 200.

[0055] Further, the air guide plate 321 is in a circular arc shape, and the plurality of air guide plates 321 are radially arranged.

[0056] As shown in Figure 5 and Figure 6 The first assembly hole 213 is arranged on the first volute portion 21, the second assembly hole 312 is arranged on the second volute portion 31, and the first assembly hole 213 and the second assembly hole 312 are connected.

[0057] Specifically, the first assembly hole 213 and the second assembly hole 312 can be fastened and connected by fasteners.

[0058] Further, the number of the first assembly hole 213 and the second assembly hole 312 is a plurality, and the plurality of first assembly holes 213 are arranged along the outer profile of the first volute portion 21, and the first assembly hole 213 and the second assembly hole 312 are correspondingly arranged.

[0059] As shown in Figures 1-7 The first shell 2 comprises a first air outlet portion 22, the second shell 3 comprises a second air outlet portion 34, the fan shell 100 has an air inlet 121 and an air outlet 5, the air inlet 121 and the air outlet 5 are respectively communicated with the turbine cavity 4, the air inlet 121 is arranged on the end cover 1, and the air outlet 5 is surrounded by the first air outlet portion 22 and the second air outlet portion 34.

[0060] Specifically, the air inlet 121 is arranged on the convex part 12, and the plurality of rib plates 13 are arranged around the air inlet 121 and are arranged at intervals along the circumference of the air inlet 121.

[0061] As shown in Figures 8-10 The mounting part 33 is arranged at the center of the second volute part 31, and the air guide part 32 is arranged around the mounting part 33.

[0062] Further, the mounting part 33 is provided with a mounting cavity 331, the mounting cavity 331 is communicated with the turbine cavity 4, that is, the mounting cavity 331 is communicated with the second turbine cavity 311, and the casing 301 is mounted on the mounting cavity 331.

[0063] It should be noted that the above is only the preferred embodiment of the present application and the technical principles applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, re-adjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A fan housing, characterized in that, The device includes an end cap (1), a first housing (2), and a second housing (3). The end cap (1) is mounted on the first housing (2), and the first housing (2) is mounted on the second housing (3) to form a turbine cavity (4) for the turbine (200) to rotate. The second housing (3) includes a guide section (32) and a mounting section (33). The mounting section (33) is configured to mount a housing (301) for a motor (300). The guide section (32) is disposed in the turbine cavity (4) and arranged circumferentially along the turbine (200). The guide section (32) is capable of guiding airflow.

2. The fan housing according to claim 1, characterized in that, The air guide section (32) includes a plurality of air guide plates (321), each of which is arranged at circumferential intervals along the turbine (200).

3. The fan housing according to claim 2, characterized in that, The air guide plate (321) is arc-shaped.

4. The fan housing according to claim 1, characterized in that, The first housing (2) includes a first volute portion (21), the second housing (3) includes a second volute portion (31), the end cap (1), the first volute portion (21) and the second volute portion (31) form the turbine cavity (4), and the mounting portion (33) is disposed at the center of the second volute portion (31).

5. The fan housing according to claim 4, characterized in that, The first volute (21) has a port (214) which is connected to the turbine cavity (4), and the end cover (1) is installed on the port (214).

6. The fan housing according to claim 5, characterized in that, The end cap (1) includes an annular portion (11) which is mounted on the port (214).

7. The fan housing according to claim 6, characterized in that, The end cap (1) also includes a protrusion (12) which is connected to the inner ring wall of the annular portion (11). The protrusion (12) protrudes away from the turbine (200) to form a turbine wall (122) that is opposite to and adapted to the turbine (200).

8. The fan housing according to claim 1, characterized in that, The mounting part (33) has a mounting cavity (331) which is connected to the turbine cavity (4), and the housing (301) is mounted on the mounting cavity (331).

9. The fan housing according to claim 1, characterized in that, The first housing (2) includes a first air outlet (22), and the second housing (3) includes a second air outlet (34). The fan housing has an air inlet (121) and an air outlet (5). The air inlet (121) and the air outlet (5) are respectively connected to the turbine cavity (4). The air inlet (121) is opened on the end cover (1), and the air outlet (5) is formed by the first air outlet (22) and the second air outlet (34).

10. A centrifugal fan, characterized in that, include: The fan housing (100) as described in any one of claims 1-9; A turbine (200) is rotatably disposed within the turbine cavity (4); The motor (300) includes a housing (301) mounted on the mounting part (33), and the output end of the motor (300) is connected to the turbine (200).

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