Multifunctional EC fan

Abstract

The multifunctional EC fan comprises a mounting plate, an air guide ring, a mounting frame, a motor and an impeller assembly, an air inlet through hole is formed in the position, corresponding to the air guide ring, of the mounting plate, the mounting frame comprises a fixing plate parallel to the mounting plate and supporting legs fixed to the side, close to the mounting plate, of the fixing plate, and the motor is fixed to the fixing plate; the multiple supporting legs are evenly distributed about the axis of the air guide ring, a rectangular annular plate body arranged on the outer side of the air guide ring in a sleeving mode is jointly fixed to the ends, away from the fixing plate, of the multiple supporting legs, and two fixing assemblies symmetrically arranged about the mounting plate are arranged on the rectangular annular plate body. Each set of fixing assembly comprises a threaded rod fixed to the side, away from the supporting feet, of the rectangular annular plate body and a nut arranged on the threaded rod in a sleeving mode and in threaded connection with the threaded rod, the threaded rod penetrates through the mounting plate and is in clearance fit with the mounting plate, and the nut is located on the side, away from the supporting feet, of the mounting plate. According to the invention, a worker can quickly assemble the mounting rack, and the motor maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of EC fans, in particular to a multifunctional EC fan. Background Art

[0002] EC fan refers to a centrifugal fan using a digital brushless DC external rotor motor or a centrifugal fan using an EC motor. EC motor is a brushless DC maintenance-free motor with a built-in intelligent control module, with RS485 output interface, 0-10V sensor output interface, 4-20mA speed control switch output interface, alarm device output interface and master-slave signal output interface. This product has the characteristics of high intelligence, high energy saving, high efficiency, long life, low vibration, low noise and continuous uninterrupted operation.

[0003] like Figure 1 As shown, the EC fan in the existing general technology usually includes a mounting plate 1, an air guide ring 2 fixed to one side of the mounting plate 1, a mounting frame 3 arranged on the mounting plate 1 and located outside the air guide ring 2, a motor 4 fixed to the mounting frame 3 and an impeller assembly 5 connected to the end of the output shaft of the motor 4, the impeller plate in the impeller assembly 5 extends into the air guide ring 2, the mounting frame 3 usually has a plurality of legs 31, each of the legs 31 is fixed with a screw 311 passing through the mounting plate 1 at the end, and is threadedly connected by a nut 3111, and in the process of installing and disassembling the mounting frame 3, four nuts 3111 need to be disassembled, the operation is relatively cumbersome, and it is not convenient for the staff to quickly assemble the mounting frame 3, thereby not being convenient for the motor 4 to be quickly repaired. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a multifunctional EC fan.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions: a multifunctional EC fan, comprising a mounting plate, an air guide ring fixed to one side of the mounting plate, a mounting frame arranged on the mounting plate and located outside the air guide ring, a motor fixed to the mounting frame away from the air guide ring, and an impeller assembly connected to the end of the output shaft of the motor, wherein the mounting plate is provided with an air inlet through hole at a position corresponding to the air guide ring, the mounting frame comprises a fixing plate arranged parallel to the mounting plate and a support foot fixed to a side of the fixing plate close to the mounting plate, the motor is fixed to the fixing plate, the support foot is provided with a plurality of and evenly distributed about the axis of the air guide ring, a plurality of the support feet are commonly fixed at one end away from the fixing plate with a rectangular annular plate body sleeved on the outside of the air guide ring, two groups of fixing components symmetrically arranged about the mounting plate are arranged on the rectangular annular plate body, each group of the fixing components comprises a threaded rod fixed to a side of the rectangular annular plate body away from the support foot and a nut sleeved on the threaded rod and threadedly connected to the threaded rod, the threaded rod passes through the mounting plate and is gap-matched with the mounting plate, and the nut is located on a side of the mounting plate away from the support foot.

[0006] By adopting the above technical solution, the ends of multiple legs are fixed together with the rectangular annular plate body, the threaded rods on the rectangular annular plate body pass through the mounting plate and cooperate with the gap of the mounting plate, and are then fixed by nuts. When installing the mounting frame on the mounting plate, only two nuts need to be tightened, which reduces the number of threaded rods and nuts to be set, improves installation efficiency, facilitates staff to quickly disassemble and assemble the mounting frame, and improves motor maintenance efficiency.

[0007] Furthermore, a rectangular annular rubber sheet is provided between the mounting plate and the rectangular annular plate body, the position of the rectangular annular rubber sheet corresponds to the position of the rectangular annular plate body, and the threaded rod penetrates the rectangular annular rubber sheet and is gap-matched with the rectangular annular rubber sheet.

[0008] By adopting the above technical solution, the rectangular annular rubber sheet is made of rubber material and has good elastic properties. The setting of the rectangular annular rubber sheet plays a good protective role on the mounting plate and the rectangular annular plate body, reducing the friction damage between the mounting plate and the rectangular annular plate body.

[0009] Furthermore, a filter screen is provided on a side of the mounting plate away from the motor, the threaded rod passes through the filter screen and is gap-matched with the filter screen, and the filter screen is located between the nut and the mounting plate.

[0010] By adopting the above technical solution and setting the filter net, the wind flow entering the air guide circle from the air inlet hole is well filtered, which is helpful to intercept larger debris in the wind flow.

[0011] Furthermore, two rubber rings are sleeved on the threaded rod, and the two rubber rings are respectively located between the filter screen and the nut, and between the filter screen and the mounting plate.

[0012] By adopting the above technical solution, the rubber ring is made of rubber material. After tightening the nut, the nut cooperates with the filter screen, and the filter screen cooperates with the mounting plate and presses against the rubber ring, which is beneficial to enhance the stability of the connection between the threaded rod and the mounting plate, and is beneficial to reduce the probability of noise generated between the threaded rod and the mounting plate due to the vibration generated during the operation of the motor.

[0013] Furthermore, a notch for the threaded rod to pass through is provided at a position on the edge of the mounting plate corresponding to the threaded rod, and two notches are provided and are symmetrically arranged.

[0014] By adopting the above technical solution and setting the notch, the difficulty of the threaded rod passing through the mounting plate is reduced, which is conducive to the staff to quickly fix the support leg and the mounting plate.

[0015] Furthermore, the mounting plate is provided with an arc-shaped groove which is connected with the notch and cooperates with the threaded rod.

[0016] By adopting the above technical solution, the setting of the arc-shaped groove plays a good role in accommodating and guiding the position of the threaded rod. When the threaded rod enters the arc-shaped groove, the position of the bracket on the mounting plate just meets the installation requirements, reducing the possibility of collision between the impeller assembly and the inner wall of the air guide ring, which is beneficial to the normal use of the motor and impeller assembly.

[0017] Furthermore, a connecting plate is fixed to one end of the motor close to the mounting plate, and screws are provided through the connecting plate to fit with the connecting plate in a clearance, and the screws are threadedly connected to the fixing plate.

[0018] By adopting the above technical solution, it is convenient for the staff to detachably install the motor on the fixed plate.

[0019] In summary, the utility model has the following beneficial effects:

[0020] 1. In the present application, the ends of the multiple legs are fixed together with the rectangular annular plate body, the threaded rods on the rectangular annular plate body pass through the mounting plate and match the gap with the mounting plate, and then are fixed by nuts. When the mounting frame is installed on the mounting plate, only two nuts need to be tightened, which reduces the number of threaded rods and nuts, improves the installation efficiency, facilitates the staff to quickly disassemble and assemble the mounting frame, and improves the maintenance efficiency of the motor;

[0021] 2. In this application, the setting of the filter net plays a good role in filtering the wind flow entering the air guide circle from the air inlet hole, which is conducive to intercepting larger debris in the wind flow;

[0022] 3. In this application, the setting of the notch reduces the difficulty of the threaded rod passing through the mounting plate, which is conducive to the staff to quickly fix the support leg and the mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an EC fan in the prior art;

[0024] Figure 2 It is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0025] Figure 3 yes Figure 2 A schematic diagram of the structure from another perspective;

[0026] Figure 4 yes Figure 2 Schematic diagram of the explosion structure;

[0027] Figure 5 It is a schematic diagram of the overall structure of Embodiment 2 of the present utility model;

[0028] Figure 6 yes Figure 5 A schematic diagram of the structure from another perspective;

[0029] Figure 7 yes Figure 5 A magnified schematic diagram of center A.

[0030] In the figure: 1. mounting plate; 11. air inlet hole; 12. notch; 13. arc-shaped groove; 2. air guide ring; 3. mounting frame; 31. support foot; 311. screw rod; 3111. nut; 32. fixing plate; 4. motor; 41. connecting plate; 411. screw; 42. circular through hole; 5. impeller assembly; 6. fixing assembly; 61. threaded rod; 62. nut; 7. rectangular annular plate; 71. rectangular annular rubber sheet; 8. filter screen; 9. rubber ring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0032] Example 1

[0033] like Figure 2-4As shown, the embodiment of the present application discloses a multifunctional EC fan, including a mounting plate 1, an air guide ring 2, a mounting frame 3, a motor 4, an impeller assembly 5 and a fixing assembly 6. The cross section of the air guide ring 2 is circular, one end of the air guide ring 2 is fixed to one side of the mounting plate 1, and an air inlet hole 11 is provided at a position corresponding to the mounting plate 1 and the air guide ring 2. The mounting frame 3 is arranged on the mounting plate 1 and is located outside the air guide ring 2. The mounting frame 3 includes a fixing plate 32 arranged parallel to the mounting plate 1 and a support leg 31 fixed to a side of the fixing plate 32 close to the mounting plate 1. The motor 4 is arranged on a side of the fixing plate 32 away from the mounting plate 1 and is detachably connected to the fixing plate 32. The support leg 31 is provided in plurality and is evenly distributed about the axis of the air guide ring 2.

[0034] A connecting plate 41 is fixed to one end of the motor 4 close to the mounting plate 1, and a screw 411 is provided through the connecting plate 41 to fit with the connecting plate 41 in a clearance. The screw 411 is threadedly connected to the fixing plate 32, and a circular through hole 42 is provided at a position of the fixing plate 32 corresponding to the motor 4. The impeller assembly 5 is connected to the output shaft end of the motor 4, and the impeller plate in the impeller assembly 5 extends into the air guide ring 2.

[0035] In this embodiment, a plurality of legs 31 are fixed together with a rectangular annular plate 7 sleeved on the outside of the air guide ring 2 at one end away from the fixing plate 32, and a fixing assembly 6 is arranged on the rectangular annular plate 7. The fixing assembly 6 is provided with two groups symmetrically arranged about the mounting plate 1, and each group of fixing assemblies 6 includes a threaded rod 61 fixed to the side of the rectangular annular plate 7 away from the legs 31 and a nut 62 sleeved on the threaded rod 61 and threadedly connected to the threaded rod 61, the threaded rod 61 passes through the mounting plate 1 and is loosely matched with the mounting plate 1, and the nut 62 is located on the side of the mounting plate 1 away from the legs 31. The ends of the plurality of legs 31 are fixed together with the rectangular annular plate 7, and the threaded rod 61 on the rectangular annular plate 7 passes through the mounting plate 1 and is loosely matched with the mounting plate 1, and is then fixed by the nut 62. When the mounting frame 3 is mounted on the mounting plate 1, only two nuts 62 need to be tightened, which reduces the number of threaded rods 61 and nuts 62, improves the installation efficiency, facilitates the staff to quickly disassemble and assemble the mounting frame 3, and improves the maintenance efficiency of the motor 4.

[0036] In order to filter the wind flow entering the air inlet hole 11 and the air guide ring 2, a filter screen 8 is provided on the side of the mounting plate 1 away from the motor 4. The threaded rod 61 penetrates the filter screen 8 and is in clearance with the filter screen 8. The filter screen 8 is located between the nut 62 and the mounting plate 1. In order to enhance the protection of the filter screen 8, the mounting plate 1 and the rectangular annular plate body 7, a rectangular annular rubber sheet 71 is provided between the mounting plate 1 and the rectangular annular plate body 7. The position of the rectangular annular rubber sheet 71 corresponds to the position of the rectangular annular plate body 7. The threaded rod 61 penetrates the rectangular annular rubber sheet 71 and is in clearance with the rectangular annular rubber sheet 71. Two rubber rings 9 are sleeved on the threaded rod 61. The two rubber rings 9 are respectively located between the filter screen 8 and the nut 62 and between the filter screen 8 and the mounting plate 1. The rubber ring 9 is made of rubber material. After tightening the nut 62, the nut 62 cooperates with the filter screen 8, and the filter screen 8 cooperates with the mounting plate 1 and presses against the rubber ring 9, which is beneficial to enhance the stability of the connection between the threaded rod 61 and the mounting plate 1, and is beneficial to reduce the probability of noise generated between the threaded rod 61 and the mounting plate 1 due to the vibration generated during the operation of the motor 4.

[0037] The use principle of a multifunctional EC fan in this embodiment is as follows: the ends of multiple legs 31 are fixed together with the rectangular annular plate body 7, the threaded rod 61 on the rectangular annular plate body 7 passes through the mounting plate 1 and is gap-matched with the mounting plate 1, and is then fixed by a nut 62. When installing the mounting frame 3 on the mounting plate 1, only two nuts 62 need to be tightened, which reduces the number of threaded rods 61 and nuts 62, improves the installation efficiency, facilitates the staff to quickly disassemble and assemble the mounting frame 3, and improves the maintenance efficiency of the motor 4.

[0038] Example 2

[0039] like Figure 5-7 As shown, the difference between this embodiment and embodiment 1 is that a notch 12 for the threaded rod 61 to pass through is provided at a position on the edge of the mounting plate 1 corresponding to the threaded rod 61, and two notches 12 are provided and symmetrically arranged. The provision of the notch 12 reduces the difficulty of the threaded rod 61 passing through the mounting plate 1, which is conducive to the staff to quickly fix the support leg 31 to the mounting plate 1.

[0040] The mounting plate 1 is provided with an arc groove 13 which is connected with the notch 12 and matches with the threaded rod 61. The setting of the arc groove 13 plays a good role in accommodating and guiding the position of the threaded rod 61. When the threaded rod 61 enters the arc groove 13, the position of the bracket on the mounting plate 1 just meets the installation requirements, reducing the possibility of the impeller assembly 5 colliding with the inner wall of the air guide ring 2, which is conducive to the normal use of the motor 4 and the impeller assembly 5.

[0041] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A multifunctional EC fan, comprising a mounting plate (1), an air guide ring (2) fixed to one side of the mounting plate (1), a mounting frame (3) arranged on the mounting plate (1) and located outside the air guide ring (2), a motor (4) fixed to the mounting frame (3) away from the motor (4), and an impeller assembly (5) connected to the end of the output shaft of the motor (4), wherein the mounting plate (1) is provided with an air inlet hole (11) at a position corresponding to the air guide ring (2), the mounting frame (3) comprises a fixing plate (32) arranged parallel to the mounting plate (1) and a support leg (31) fixed to a side of the fixing plate (32) close to the mounting plate (1), the motor (4) is fixed to the fixing plate (32), a plurality of the support legs (31) are provided and are evenly distributed about the axis of the air guide ring (2), and the fan is characterized in that: A rectangular annular plate body (7) sleeved on the outside of the air guide ring (2) is commonly fixed to one end of the plurality of legs (31) away from the fixing plate (32); two groups of fixing components (6) symmetrically arranged with respect to the mounting plate (1) are arranged on the rectangular annular plate body (7); each group of the fixing components (6) comprises a threaded rod (61) fixed to the side of the rectangular annular plate body (7) away from the legs (31) and a nut (62) sleeved on the threaded rod (61) and threadedly connected to the threaded rod (61); the threaded rod (61) passes through the mounting plate (1) and is loosely fitted with the mounting plate (1); and the nut (62) is located on the side of the mounting plate (1) away from the legs (31).

2. A multifunctional EC fan according to claim 1, characterized in that: A rectangular annular rubber sheet (71) is provided between the mounting plate (1) and the rectangular annular plate body (7); the position of the rectangular annular rubber sheet (71) corresponds to the position of the rectangular annular plate body (7); the threaded rod (61) penetrates the rectangular annular rubber sheet (71) and is loosely fitted with the rectangular annular rubber sheet (71).

3. A multifunctional EC fan according to claim 2, characterized in that: A filter screen (8) is provided on the side of the mounting plate (1) away from the motor (4); the threaded rod (61) penetrates the filter screen (8) and is loosely fitted with the filter screen (8); and the filter screen (8) is located between the nut (62) and the mounting plate (1).

4. A multifunctional EC fan according to claim 3, characterized in that: Two rubber rings (9) are sleeved on the threaded rod (61), and the two rubber rings (9) are respectively located between the filter screen (8) and the nut (62), and between the filter screen (8) and the mounting plate (1).

5. A multifunctional EC fan according to claim 4, characterized in that: A notch (12) for the threaded rod (61) to pass through is provided at a position on the edge of the mounting plate (1) corresponding to the threaded rod (61), and two notches (12) are provided and are symmetrically arranged.

6. A multifunctional EC fan according to claim 5, characterized in that: The mounting plate (1) is provided with an arc-shaped groove (13) which is in communication with the notch (12) and matches with the threaded rod (61).

7. A multifunctional EC fan according to claim 4, characterized in that: A connecting plate (41) is fixed to one end of the motor (4) close to the mounting plate (1), a screw (411) is provided through the connecting plate (41) and is loosely matched with the connecting plate (41), and the screw (411) is threadedly connected to the fixing plate (32).

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