CN219865531U - EC centrifugal fan unit - Google Patents

Abstract

The utility model discloses an EC centrifugal fan unit, which comprises a shell, an impeller arranged in the shell and a driving motor directly connected with the impeller, wherein the shell is of a box structure with openings at two sides and hollow inside, one opening is an air inlet, the other opening is an air outlet, the shell is provided with flanges on the air inlet and the air outlet, the flanges comprise an air inlet flange and an air outlet flange, the shell is provided with a dustproof filtering device at the air inlet, the dustproof filtering device comprises a frame, a fixing plate and a filter screen, the fixing plate and the filter screen are matched for use, and the fixing plate and the filter screen are consistent in appearance and are composed of a plurality of uniformly distributed V-shaped structural blocks. The dustproof filtering device can block most of dust particles outside the shell, and can reduce or avoid striking friction of dust particles on the fan blade, so that abrasion to the blade is reduced, the blade is prevented from breaking, safety accidents are prevented, and safety is improved.

Description

EC centrifugal fan unit

Technical Field

The utility model relates to the technical field of ventilator equipment, in particular to an EC centrifugal fan unit.

Background

The centrifugal fan unit is used as one of general machines, and is widely used because of the relatively simple structure, but most of centrifugal fan units circulated in the market adopt a common energy-efficient motor and adopt direct connection transmission of the motor and an impeller, so that the generated result is high energy consumption and even the situation that blades fall off, finally social resource waste and safety accidents are caused, only the medium in a conveying pipeline is played, and along with the increase of the service time, a large amount of greasy dirt and dust can be accumulated on the surface of the impeller, when the impeller rotates, the load is increased, the safety coefficient is not high, noise is generated, and the working environment is influenced. Based on this, the present utility model proposes an EC centrifugal fan unit to solve the above-mentioned problems.

Disclosure of Invention

The present utility model is directed to solving at least one of the problems of the prior art. Therefore, the utility model aims to provide the EC centrifugal fan unit which has higher efficiency, smaller energy consumption and higher cost performance while meeting the requirement of usual medium pipeline transportation.

In order to achieve the above purpose, the utility model provides an EC centrifugal fan unit, which comprises a shell, an impeller arranged in the shell and a driving motor directly connected with the impeller, wherein the shell is of a box structure with openings at two sides and hollow inside, one opening is an air inlet, the other opening is an air outlet, the shell is provided with flanges on the air inlet and the air outlet, the flanges comprise an air inlet flange and an air outlet flange, the shell is provided with a dustproof filtering device at the air inlet, the dustproof filtering device comprises a frame, a fixing plate and a filter screen, the frame is hollow inside, the fixing plate and the filter screen are matched for use, and the fixing plate and the filter screen are identical in appearance and consist of a plurality of uniformly distributed V-shaped structural blocks.

On the basis of the scheme, the fixing plate is embedded in the frame, and the filter screen is fixedly arranged on the fixing plate.

On the basis of the scheme, at least one sound insulation layer is arranged on the inner surface of the shell, the sound insulation layer is fixedly arranged on the inner wall of the shell, and the thickness of the sound insulation layer is 1-2cm.

On the basis of the scheme, the outer edge of the frame is provided with a plurality of connecting holes, and the frame is fixed on the air inlet flange through the matching of the fasteners.

On the basis of the scheme, a support is arranged in the shell, the support is fixedly arranged at the inner bottom of the shell, and the driving motor is arranged on the support.

On the basis of the scheme, a current collector is further arranged in the shell, the current collector is fixedly arranged at the air inlet of the shell, and the tail end of the current collector is in smooth transition with the front end of the impeller.

On the basis of the scheme, the bottom of the shell is provided with the base, and the base is of a 'well' -shaped structure.

Further on the basis of the scheme, the driving motor is an EC motor.

The utility model has the beneficial effects that:

1. the dust-proof filter device is arranged at the air inlet of the fan, and can filter and block some dust particles before the air enters the room, so that the room has a relatively clean environment, and related staff can be in a green and healthy environment to do related work;

2. the dust-proof filter device is arranged at the air inlet of the fan, so that the striking friction of dust particles on the fan blade can be reduced or avoided, the abrasion on the blade is reduced, the situation that the blade is broken and the safety accident are prevented, and the safety is improved;

3. the air inlet is provided with the dust-proof filtering device, so that dust particles to a certain extent can be filtered and blocked before gas enters the inlet of the fan, and dust particles can be effectively reduced from being accumulated on the blades, thereby avoiding the increased load and kinetic energy of the impeller, saving electricity cost to a certain extent and improving market competitiveness;

4. the driving motor adopts an EC motor, which is a brushless DC motor in nature, so that a collector ring and a carbon brush for excitation are omitted, the structure is greatly simplified, the manufacturability of the motor is improved, and the mechanical reliability of the motor in operation is greatly enhanced, so that the service life is prolonged.

The features and advantages of the present utility model will be described in detail by way of example with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the housing of the present utility model;

FIG. 3 is an exploded view of the dust filter device of the present utility model.

In the figure: 1. the device comprises a shell, an impeller, a driving motor, a flange, a dustproof filtering device, a frame, a fixing plate, a filter screen, a sound insulation layer, a connecting hole, a support, a collector and a base, wherein the shell, the impeller, the driving motor, the flange, the dustproof filtering device, the frame, the fixing plate, the filter screen, the sound insulation layer, the connecting hole, the support, the collector and the base.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus consistent with aspects of the utility model as detailed in the accompanying claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. Unless defined otherwise, technical or scientific terms used herein should be understood as commonly understood by one of ordinary skill in the art to which this utility model belongs. The use of the terms "a" or "an" and the like in the description and in the claims do not denote a limitation of quantity, but rather denote the presence of at least one. The term "plurality" includes two, corresponding to at least two. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

As shown in fig. 1-3, the EC centrifugal fan unit includes a casing 1, an impeller 2 mounted in the casing 1, and a driving motor 3 directly connected with the impeller 2, where the casing 1 is a box structure with two open sides and hollow inside, one of the openings is an air inlet, the other is an air outlet, please refer to fig. 2, the left side is the air inlet, the right side is the air outlet, and the casing 1 is provided with flanges 4 on the air inlet and the air outlet, including an air inlet flange 4 and an air outlet flange 4, the casing 1 can be externally connected with a pipeline or other devices through the flanges 4, and the flanges 4 can be fixed on the air inlet and the air outlet of the casing 1 through fasteners (bolts, nuts) or welding technology.

Furthermore, in order to prevent part of dust particles from entering the shell 1, the inventor sets a dustproof filtering device 5 at the air inlet of the shell 1, the dustproof filtering device 5 comprises a frame 6, a fixing plate 7 and a filter screen 8, the frame 6 is hollow in the interior and is provided with a plurality of connecting holes 10 at the outer edge, the frame 6 is fixed on the air inlet flange 4 through the cooperation of fasteners (bolts), the fixing plate 7 is embedded in the frame 6, the filter screen 8 is fixedly arranged on the fixing plate 7, the fixing plate 7 and the filter screen 8 are cooperatively used, the fixing plate 7 and the filter screen 8 are consistent in appearance and are formed by a plurality of uniformly distributed V-shaped structural blocks, the V-shaped structural blocks can increase the filtering area of the filter screen 8, and can block most of dust particles outside the shell 1, so that a relatively clean environment is provided in the room, and related staff can work in a green and healthy environment; the striking friction of dust particles on the fan blades can be reduced or avoided, so that the abrasion on the blades is reduced, the situation that the blades are broken and the safety accidents are prevented, and the safety is improved; and dust particles can be effectively reduced and accumulated on the blades, so that the increased load and kinetic energy of the impeller 2 can be avoided, the electricity cost is saved to a certain extent, and the market competitiveness is improved.

Further, when the dust-proof filter device 5 is fully filled with dust, the dust-proof filter device 5 can be detached from the air inlet flange 4 by removing the fasteners, and then cleaned or replaced.

Further, the shell 1 internal surface is provided with at least one deck puigging 9, and puigging 9 fixed mounting is on the shell 1 inner wall, and puigging 9 thickness is 1-2cm, and puigging 9 adopts the puigging to make, and the mode of accessible gum is fixed on the shell 1 inner wall, and puigging 9 has the function of making an uproar that falls that gives sound insulation.

Further, a support 11 is arranged in the shell 1, the support 11 is fixedly arranged at the bottom in the shell 1, and the driving motor 3 is arranged on the support 11.

Further, a current collector 12 is further arranged in the shell 1, the current collector 12 is fixedly arranged at an air inlet of the shell 1, the tail end of the current collector 12 is in smooth transition with the front end of the impeller 2, so that a turbulence area generated when gas enters the impeller 2 is small, and the gas flow loss is reduced.

Further, the bottom of the shell 1 is provided with a base 13, and the base 13 is of a 'well' -shaped structure.

Further, the driving motor 3 is an EC motor, which is a brushless dc motor in nature, so that a slip ring and a carbon brush for excitation are omitted, the structure is greatly simplified, the manufacturability of the motor is improved, and the mechanical reliability of the operation of the motor is greatly enhanced, so that the service life is prolonged.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides an EC centrifugal fan unit, includes the shell, installs in the inside impeller of shell and the driving motor who is connected with impeller direct, and one of them opening is the air intake, and another opening is the air outlet, the shell all is provided with the flange on air intake and air outlet, including air intake flange and air outlet flange, its characterized in that, the shell is provided with dustproof filter equipment in air intake department, dustproof filter equipment includes frame, fixed plate and filter screen, the inside cavity of frame, fixed plate and filter screen cooperation are used, fixed plate and filter screen appearance are unanimous all by a plurality of evenly distributed 'V' type building block group.

2. The EC centrifugal fan assembly of claim 1, wherein said fixed plate is mounted in-line within the frame, and said filter screen is fixedly mounted on the fixed plate.

3. An EC centrifugal fan assembly according to claim 2, wherein the inner surface of the housing is provided with at least one sound insulation layer, which is fixedly mounted on the inner wall of the housing, and which has a thickness of 1-2cm.

4. An EC centrifugal fan assembly according to claim 3, wherein the outer edge of the frame is provided with a plurality of connection holes, and the frame is fastened to the air inlet flange by means of the engagement of fasteners.

5. The EC centrifugal fan assembly of claim 4, wherein a support is provided inside said housing, said support being fixedly mounted to the bottom inside said housing, said drive motor being mounted to said support.

6. The EC centrifugal fan assembly of claim 5, wherein a current collector is further disposed inside said housing, said current collector is fixedly mounted at an air inlet of said housing, and said current collector end smoothly transitions with the front end of said impeller.

7. The EC centrifugal fan assembly of claim 6, wherein a base is provided at the bottom of said housing, said base being in a "well" configuration.