Fan with filtering function

Abstract

The utility model relates to the technical field of fans, in particular to a fan with a filtering function, an air inlet and an air outlet are respectively connected with a filtering mechanism, each filtering mechanism comprises a horizontal cylinder, a circular ring and filter cloth, internal threads of the two horizontal cylinders are respectively connected to external threads of the air inlet and external threads of the air outlet, and the circular ring is connected with the filter cloth. The circular ring is buckled at one end, without the internal thread, of the horizontal cylinder; the filter cloth is connected between the circular ring and the horizontal cylinder; by means of the detachable filtering mechanisms arranged on the air inlet and the air outlet, cleanliness in the draught fan is protected, impurities are prevented from entering the draught fan, the draught fan can run smoothly, energy loss is reduced, and more energy is saved and emission is reduced. The horizontal barrel, the circular ring and the filter cloth of the filter mechanism can be spliced and mounted, so that the filter cloth is convenient to replace; the protection cover can prevent the motor from being damaged, and the arranged through groove and the filter screen can keep ventilation of the motor and prevent the motor from being overheated.

Description

Technical Field

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

[0002] A fan is a mechanical device that accelerates the movement of gas such as air through rotating blades. It is used to transport air, increase air pressure, increase air flow speed, etc. A fan is usually composed of a motor, an impeller, inlet and outlet air ducts, a supporting device, and other parts. Among them, the motor provides power, the impeller is the core part of the fan, and is usually composed of multiple blades; the inlet and outlet air ducts are used to connect the impeller and the external medium, and the supporting device is used to support the fan. Its operating principle is that the motor drives the impeller to rotate at a high speed, and the gas entering the air duct generates a forward-pushing force due to the rotation of the impeller, and the impeller generates a negative pressure area, so that the gas is sucked in and discharged from the fan to form an air flow.

[0003] In the prior art, the fan has the following defects during use: debris is easily introduced into the air duct, thereby generating wind resistance, causing unnecessary energy loss, and increasing exhaust problems.

[0004] The prior art patent number is 2019211625194, and the patent name is a utility model patent for a blower with an air inlet having a filter structure. The patent discloses a blower with an air inlet having a filter structure, and the air inlet end of the inlet pipe is fixedly connected to the filter structure. In the filter structure, a filter cartridge is used as a filter carrier for air, and the end of the filter cartridge extending outward is fixedly connected to a connecting outlet pipe, and the end of the filter cartridge adjacent to the inlet pipe is fixedly connected to a connecting inlet pipe. An arc-shaped fixing plate is embedded in the side wall of the outer side of the filter cartridge, and a clamping piece is radially arranged inside the filter cartridge, and a filter screen with a size matching the filter screen is fixedly connected to the inner side wall of the arc-shaped fixing plate, so that the blower not only has the function of effectively filtering the air, but also the filter screen in the filter structure is detachable, which reduces the maintenance cost of the blower in the later stage and greatly improves the practical performance of the blower in actual use scenarios.

[0005] However, the filter structure in the above-mentioned prior art is relatively long due to the limitation of the connection structure, and the above-mentioned prior art is provided with an air outlet pipe for connection with the filter structure. If the air outlet pipe is not provided, there may be interference between the filter structure and the installation position of the motor. In addition, when dismantling the above-mentioned prior art, it is first necessary to unscrew the fastening bolts on the clamp ring, and then the constraint of the clamp ring on the arc fixing plate is released. After removing the clamp ring, the arc fixing plate can also be pulled out from the inside of the filter cartridge together with the filter screen. After being pulled out, it can be cleaned. The disassembly process is too cumbersome and inconvenient to use. Utility Model Content

[0006] The utility model aims to provide a fan with a filtering function, which prevents debris from entering the fan, enables the fan to run smoothly, saves energy loss, and saves energy and reduces emissions. At the same time, it is easy to install and disassemble, and the filter cloth is easy to replace.

[0007] To achieve the above-mentioned technical effect, the utility model provides a fan with a filtering function, including a motor, an impeller connected to the motor output shaft, a plurality of blades evenly distributed on the circumference of the impeller, a shell sleeved on the outer side of the impeller, an air inlet and an air outlet provided on the shell, the air inlet and the air outlet have the same diameter, a filtering mechanism is connected to the air inlet and the air outlet, the filtering mechanism includes a horizontal cylinder, a ring and a filter cloth, external threads are provided on the outer wall of the air inlet at one end away from the shell and on the outer wall of the air outlet at one end away from the shell, an internal thread is connected on the inner wall of one end of the horizontal cylinder, the internal threads of the two horizontal cylinders are respectively connected to the external threads of the air inlet and the external threads of the air outlet, the ring is buckled on the end of the horizontal cylinder where the internal thread is not provided, and the filter cloth is connected between the ring and the horizontal cylinder.

[0008] Furthermore, an annular groove is provided on the outer side of the outer wall of the end of the horizontal cylinder that is not provided with an internal thread, and a buckle block is provided on the end of the circular ring facing the horizontal cylinder. The buckle block is shaped like an "L" including a vertical portion and a horizontal portion, and the end of the vertical portion away from the horizontal portion is fixedly connected to the circular ring, and the end of the horizontal portion away from the vertical portion is buckled in the annular groove.

[0009] Furthermore, a plurality of buckle blocks are provided on the circular ring, and the plurality of buckle blocks are evenly distributed around the circumference with the axis of the circular ring as the center.

[0010] Furthermore, a protective cover is sleeved on the outer side of the motor, the protective cover is connected to the outer wall of the shell, a plurality of through grooves I are evenly distributed on the circumference of the outer wall of the protective cover, and a plurality of through grooves II are evenly distributed on the circumference of the plane outer wall of the protective cover away from the shell.

[0011] Furthermore, filter nets are fixedly connected to the inner sides of the plurality of through grooves I and the plurality of through grooves II respectively.

[0012] Furthermore, the corner of one end of the horizontal portion of the buckle block facing the shell is rounded.

[0013] Furthermore, the buckle block is made of elastic plastic material.

[0014] Furthermore, a support block is connected to the bottom surface of the shell, a rear end of the support block and a rear end of the shell are located in the same vertical plane, and a front end of the support block extends out of the shell.

[0015] Furthermore, the front and rear corners of the support block are all rounded.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model can protect the cleanliness of the fan by setting a detachable filter mechanism on the air inlet and the air outlet, prevent debris from entering the fan, enable the fan to run smoothly, save energy loss, and save energy and reduce emissions;

[0018] 2. The filter mechanism of the utility model is threadedly connected to the air inlet or outlet, which is easy to install and disassemble, and the horizontal cylinder, the ring and the filter cloth of the filter mechanism can be spliced ​​and installed, so that the filter cloth can be easily replaced;

[0019] 3. The utility model can prevent the motor from being damaged by the protective cover arranged outside the motor, and the through slots and filter screen arranged at the same time can keep the motor ventilated and prevent the motor from overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is the front view of the utility model.

[0022] Figure 3 It is the right view of the utility model.

[0023] Figure 4 It is a schematic diagram of the connection structure of the impeller of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the filtering mechanism of the utility model.

[0025] In the figure: 1. motor; 2. impeller; 3. housing; 4. air inlet; 5. air outlet; 6. protective cover; 7. through slot I; 8. filter screen; 9. filter mechanism; 10. horizontal cylinder; 11. annular groove; 12. circular ring; 13. filter cloth; 14. buckle block; 15. support block; 16 through slot II. DETAILED DESCRIPTION

[0026] like Figure 1-Figure 5As shown, the utility model is a fan with filtering function, including a motor 1, an impeller 2 is connected to the output shaft of the motor 1, a plurality of blades are evenly distributed on the circumference of the impeller 2, a shell 3 is sleeved on the outer side of the impeller 2, an air inlet 4 and an air outlet 5 are arranged on the shell 3, the air inlet 4 and the air outlet 5 have the same diameter, a filtering mechanism 9 is connected to the air inlet 4 and the air outlet 5, the filtering mechanism 9 includes a horizontal cylinder 10, a ring 12 and a filter cloth 13, external threads are arranged on the outer wall of the end of the air inlet 4 away from the shell 3 and the outer wall of the end of the air outlet 5 away from the shell 3, an internal thread is connected to the inner wall of one end of the horizontal cylinder 10, and the internal threads of the two horizontal cylinders 10 are respectively connected to the air inlet 4 and the external thread of the air outlet 5, the ring 12 is buckled on the end of the horizontal cylinder 10 without internal thread, the filter cloth 13 is connected between the ring 12 and the horizontal cylinder 10, and an annular groove 11 is provided on the outer side of the outer wall of the end of the horizontal cylinder 10 without internal thread, and the end of the ring 12 facing the horizontal cylinder 10 is provided with a buckle block 14, the buckle block 14 is in the shape of an "L" including a vertical portion and a horizontal portion, the end of the vertical portion away from the horizontal portion is fixedly connected to the ring 12, and the end of the horizontal portion away from the vertical portion is buckled in the annular groove 11, and a plurality of buckle blocks 14 are provided on the ring 12, and the plurality of buckle blocks 14 are evenly distributed around the circumference with the axis of the ring 12 as the center. The corner of one end of the horizontal part of the buckle block 14 facing the shell 3 is rounded. The buckle block 14 is made of elastic plastic material, so that the buckle block 14 can be buckled onto the annular groove 11 more smoothly. The buckle block 14 connects the horizontal cylinder 10 with the circular ring 12, clamping the filter cloth 13 between the horizontal cylinder 10 and the circular ring 12.

[0027] A protective cover 6 is sleeved on the outside of the motor 1, and the protective cover 6 is connected to the outer wall of the housing 3. A plurality of through slots I7 are evenly distributed on the circumference of the outer wall of the protective cover 6. A plurality of through slots II16 are evenly distributed on the circumference of the plane outer wall of the protective cover 6 away from the housing 3. Filters 8 are fixedly connected to the inner sides of the plurality of through slots I7 and the plurality of through slots II16. The protective cover 6 can ventilate the motor 1 and prevent the motor 1 from overheating while protecting the motor 1.

[0028] A support block 15 is connected to the bottom surface of the housing 3, the rear end of the support block 15 and the rear end of the housing 3 are located in the same vertical plane, the front end of the support block 15 extends out of the housing 3, and the front and rear corners of the support block 15 are all rounded. The support block 15 is used to support the fan device.

[0029] In the specific implementation of the utility model, by installing the filter mechanism 9 at the air inlet 4, the air entering after the fan is started can be clean, the fan can be protected from being cleaned, and debris can be prevented from entering the fan, so that the fan can run smoothly, energy loss can be saved, and energy conservation and emission reduction can be achieved. After use, the filter mechanism 9 can be installed at the air outlet 5 to ensure that the shell 3 is free of debris, so that the fan can be more energy-efficient and emission-reducing. In addition, since the filter mechanism 9 includes a horizontal cylinder 10, a circular ring 12 is buckled at the front end of the horizontal cylinder 10, and a filter cloth 13 is provided between the circular ring 12 and the horizontal cylinder 10, the horizontal cylinder 10, the circular ring 12 and the filter cloth 13 can be spliced ​​and installed, and rotatably installed at the air inlet 4 and the air outlet 5, so that the filter cloth is easy to replace. In actual use, the filter mechanism 9 connected to the air outlet 5 may not be provided with the filter cloth 13.

Claims

1. A fan with a filtering function, comprising a motor (1), an impeller (2) connected to an output shaft of the motor (1), a plurality of blades evenly distributed on the circumference of the impeller (2), a housing (3) sleeved on the outer side of the impeller (2), an air inlet (4) and an air outlet (5) provided on the housing (3), characterized in that: The air inlet (4) and the air outlet (5) have the same diameter. The air inlet (4) and the air outlet (5) are both connected to a filter mechanism (9). The filter mechanism (9) comprises a horizontal cylinder (10), a circular ring (12) and a filter cloth (13). External threads are provided on the outer wall of one end of the air inlet (4) away from the shell (3) and on the outer wall of one end of the air outlet (5) away from the shell (3). An internal thread is connected to the inner wall of one end of the horizontal cylinder (10). The internal threads of the two horizontal cylinders (10) are respectively connected to the external threads of the air inlet (4) and the external threads of the air outlet (5). The circular ring (12) is buckled to the end of the horizontal cylinder (10) that is not provided with the internal thread. The filter cloth (13) is connected between the circular ring (12) and the horizontal cylinder (10).

2. A fan with filtering function according to claim 1, characterized in that: An annular groove (11) is provided on the outer side of the outer wall of the end of the horizontal cylinder (10) that is not provided with an internal thread, and a buckle block (14) is provided on the end of the circular ring (12) that faces the horizontal cylinder (10). The buckle block (14) is in an "L" shape including a vertical portion and a horizontal portion, and an end of the vertical portion away from the horizontal portion is fixedly connected to the circular ring (12), and an end of the horizontal portion away from the vertical portion is buckled in the annular groove (11).

3. A fan with filtering function according to claim 2, characterized in that: A plurality of the buckle blocks (14) are provided on the circular ring (12), and the plurality of buckle blocks (14) are evenly distributed around a circle with the axis of the circular ring (12) as the center.

4. The fan with filtering function according to claim 3, characterized in that: The motor (1) is sleeved with a protective cover (6) on its outer side. The protective cover (6) is connected to the outer wall of the housing (3). A plurality of through grooves I (7) are evenly distributed on the circumference of the outer wall of the protective cover (6). A plurality of through grooves II (16) are evenly distributed on the circumference of the plane outer wall of the protective cover (6) away from the housing (3).

5. The fan with filtering function according to claim 4, characterized in that: The inner sides of the plurality of through grooves I (7) and the plurality of through grooves II (16) are respectively fixedly connected with filter screens (8).

6. A fan with filtering function according to any one of claims 2 to 5, characterized in that: The corner of one end of the horizontal portion of the buckle block (14) facing the shell (3) is rounded.

7. The fan with filtering function according to claim 6, characterized in that: The buckle block (14) is made of elastic plastic material.

8. A fan with filtering function according to any one of claims 1 to 5, characterized in that: A support block (15) is connected to the bottom surface of the shell (3); a rear end of the support block (15) and a rear end of the shell (3) are located in the same vertical plane, and a front end of the support block (15) extends out of the shell (3).

9. The fan with filtering function according to claim 8, characterized in that: The front and rear corners of the support block (15) are all rounded.

Images