Low-position fan

Abstract

The invention discloses a low-position fan, and relates to the technical field of fans, the low-position fan comprises a bottom shell, one side of the bottom shell is provided with a surface shell, the surface shell and the bottom shell form a mounting cavity, the mounting cavity is internally provided with a negative-pressure blowing assembly, the negative-pressure blowing assembly comprises a motor, the motor is fixedly mounted in the mounting cavity, the motor is provided with a shaft sleeve, and the shaft sleeve is fixedly connected with the surface shell. A shaft sleeve is arranged on the base, a wind wheel is arranged on the shaft sleeve, a protective cover is further arranged on the shaft sleeve, a plurality of air inducing openings and blades are formed in the wind wheel, the blades are located in the air inducing openings, two guide rods are symmetrically and fixedly installed at the two ends in each air inducing opening, and cleaning pieces are slidably connected to the guide rods in a sleeving mode; centrifugal force can be generated in the rotating process of the blades, at the moment, the centrifugal force can drive the cleaning piece and the scraping piece to slide downwards in the arrangement direction of the guide rod, dust adhering to the inner side wall of the air inducing opening is scraped off, and the problem that the blades vibrate easily due to the influence of the dust is solved.

Description

Technical Field

[0001] The invention relates to the technical field of fans, and in particular to a low-position fan. Background Art

[0002] A low-position fan is a specially designed fan, usually installed at a lower position in a device or system to achieve specific functions or optimize performance. Low-position fans are commonly used in air-conditioning hosts, heat pump hot air blowers and other equipment to optimize air flow and heat exchange efficiency through low-position settings.

[0003] For example, an existing Chinese patent (publication number: CN109838399A) discloses a fan, which includes: a conveying component, a power component, a fan housing and a filtering device, wherein the conveying component is used to convey wind, and the power component is connected to the conveying component and is used to drive the conveying component; the conveying component is partially covered by the fan housing, and the fan housing is used to protect the conveying component, and the conveying component is provided with M air outlets at one end away from the fan housing, and M is greater than or equal to 1; the filtering device covers the M air outlets and is used to filter the gas discharged from the air outlets.

[0004] The fan of the above-mentioned design still has some disadvantages in actual use: the existing fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas, and is mainly used for gas compression and transportation. However, a large amount of dust will adhere to the internal blades of the existing fan after long-term use. The accumulation of dust will cause uneven mass distribution of the impeller and cause vibration, affecting the normal operation of the fan, and may shorten the life of the equipment, increasing unnecessary repair and maintenance costs.

[0005] Therefore, we designed a low-position fan to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a low-position fan, which will generate centrifugal force during the rotation of the blades. At this time, the centrifugal force will drive the cleaning part and the scraping part to slide downward along the direction set by the guide rod, and scrape off the dust adhering to the inner wall of the air inlet, avoiding the problem of blade vibration caused by the influence of dust, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the present invention provides a low-position fan, comprising a bottom shell, a surface shell is arranged on one side of the bottom shell, the surface shell and the bottom shell form an installation cavity, and a negative pressure blowing component is arranged in the installation cavity; The negative pressure blowing assembly comprises a motor, the motor is fixedly mounted in the mounting cavity, a shaft sleeve is arranged on the motor, a wind wheel is arranged on the shaft sleeve, and a protective cover is also arranged on the shaft sleeve; The wind wheel is provided with a plurality of air ducts and blades, the blades are located in the air ducts, two guide rods are symmetrically fixedly installed at both ends of each of the air ducts, a cleaning piece is slidably sleeved on the guide rods, a sensitive spring is movably sleeved on the guide rods, the two ends of the sensitive spring are respectively fixedly connected to the top wall of the air duct and the top of the cleaning piece, a scraper is fixedly installed on the bottom of the cleaning piece, and the scraper is against the blades.

[0008] Furthermore, a power cord is arranged on the bottom shell, a wire protection sleeve is arranged on the power cord, and a power cord buckle is also arranged on the bottom shell, and the power cord buckle is clamped with the power cord.

[0009] Furthermore, a plurality of first foot pads and second foot pads are arranged between the bottom shell and the surface shell.

[0010] Furthermore, an air outlet net is provided on one side of the bottom shell and the surface shell, and an air inlet top shell is provided on one side of the surface shell.

[0011] Furthermore, it also includes an overheating protection component, which includes a socket and a power overload protector, and the socket and the power overload protector are both arranged in the bottom shell, and the socket, the power overload protector and the negative pressure blowing component are electrically connected, a capacitor is arranged in the bottom shell, and a switch splint, a gear switch, a three-speed non-timing panel, a switch knob and a socket panel are arranged on the bottom shell, and the capacitor, the switch splint, the gear switch, the three-speed non-timing panel, the switch knob, the socket panel and the negative pressure blowing component are electrically connected to each other.

[0012] Furthermore, an air collecting frame is fixedly installed on the top of the cleaning piece, an air guide scoop is fixedly inserted on one side of the air collecting frame, a fixed cavity is opened inside the air collecting frame, the fixed cavity is connected with the air guide scoop, a connecting pipe is fixedly inserted at the center of one side of the cleaning piece, a plurality of air guide pipes are fixedly inserted on the top of the cleaning piece, a delivery pipe is fixedly inserted between every two of the air guide pipes, a side of the connecting pipe away from the air collecting frame is fixedly inserted in one of the delivery pipes, an air jet is opened inside the scraping piece, and the air jet is connected with the delivery pipe.

[0013] Furthermore, a storage cavity is provided in the air collecting frame, two heating blocks are symmetrically installed in the storage cavity, electric heating wires are embedded in the heating blocks, a fixing port is provided in the air collecting frame, a waterproof and breathable membrane is provided in the fixing port, and clean water is stored in the storage cavity.

[0014] Furthermore, a storage groove is provided at the bottom of the cleaning piece, and a dust hopper is slidably inserted into one side of the cleaning piece. Two pads are symmetrically arranged in the storage groove, and the pads are abutted against the bottom of the dust hopper. A dust suction groove is provided at the bottom of the dust hopper, and a mounting seat is provided in the dust suction groove. A pin is provided in the mounting seat, and a sealing plate is rotatably sleeved on the pin. The sealing plate is rotatably installed in the dust suction groove, and a spring is provided on the mounting seat, and the other end of the spring is provided on the sealing plate.

[0015] Furthermore, a partition plate is fixedly installed in the center of one of the conveying pipes.

[0016] Furthermore, a handle is fixedly mounted on the bottom shell, and an outer surface of the handle is provided with anti-slip textures.

[0017] Compared with the prior art, the beneficial effect of the present invention is that centrifugal force will be generated during the rotation of the blades. At this time, the centrifugal force will drive the cleaning part and the scraping part to slide downward along the direction set by the guide rod, and scrape off the dust adhering to the inner wall of the air duct, avoiding the problem of blade vibration caused by the influence of dust.

[0018] Compared with the prior art, the beneficial effects of the present invention are: by turning on the negative pressure blowing component, the outside air can be sucked into the bottom shell through the air inlet top shell in conjunction with the air duct and the blades, and then discharged through the air outlet net, thereby achieving the blowing effect; by arranging a socket panel and a socket in the bottom shell, a power diverter can be arranged in the bottom shell, so that the fan has a dual thermal protection function and improves safety.

[0019] Compared with the prior art, the beneficial effect of the present invention is that the scraped dust will float upward due to the downward movement of the cleaning piece. At this time, the dust will push the sealing plate to rotate around the mounting seat, thereby facilitating the collection of the dust into the dust hopper and preventing the dust from adhering to the blade surface for the second time.

[0020] Compared with the prior art, the beneficial effect of the present invention is that during the downward movement of the scraper, since the wind collecting frame not only moves downward but also rotates with the blades, the airflow will enter the wind collecting frame through the wind guide scoop, and at the same time, by turning on the heating block, the heating block can generate heat to heat the clean water stored in the storage chamber. The heated clean water will produce water vapor and mix with the airflow through the waterproof and breathable membrane. Finally, the hot airflow will be sprayed on the stubborn dust through the jet port, thereby improving the scraping effect of the scraper on the dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the external whole of the present invention; Figure 2 An exploded view of the present invention; Figure 3It is a schematic diagram of the three-dimensional structure of the outer part of the wind wheel of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the exterior of the cleaning member of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the cleaning member and the air collecting frame of the present invention in a half-section view; Figure 6 It is a schematic diagram of the three-dimensional structure of the outer side of the air guide scoop of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the scraper of the present invention when looking upward to the outside; Figure 8 For the present invention Figure 3 The enlarged view of point A in the middle; Fig. 9 For the present invention Figure 5 Enlarged view of point B in the middle.

[0022] In the figure: 1, bottom shell; 2, capacitor; 3, switch clamp; 4, gear switch; 5, three-speed non-timer panel; 6, switch knob; 7, socket panel; 8, wire protection sleeve; 9, motor; 10, shaft sleeve; 11, power cord; 12, power cord buckle; 13, first foot pad; 14, second foot pad; 15, socket; 16, power overload protector; 17, air outlet; 18, wind wheel; 19, surface shell; 20, air inlet top shell; 21, protective cover; 22, air inlet; 2 3. Blade; 24. Guide rod; 25. Cleaning piece; 26. Sensitive spring; 27. Scraper; 28. Wind collecting frame; 29. ​​Wind guide hopper; 30. Fixed cavity; 31. Connecting pipe; 32. Air guide pipe; 33. Delivery pipe; 34. Jet nozzle; 35. Storage cavity; 36. Heating block; 37. Fixed port; 38. Waterproof breathable membrane; 39. Storage slot; 40. Dust hopper; 41. Mounting seat; 42. Sealing plate; 43. Pin shaft; 44. Partition plate; 45. Handle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] See also Figure 1-9 The present invention provides a technical solution: a low-position fan, comprising a bottom shell 1, a surface shell 19 is arranged on one side of the bottom shell 1, the surface shell 19 and the bottom shell 1 form an installation cavity, and a negative pressure blowing component is arranged in the installation cavity; The negative pressure blowing assembly includes a motor 9, which is fixedly installed in the installation cavity. A shaft sleeve 10 is provided on the motor 9, a wind wheel 18 is provided on the shaft sleeve 10, and a protective cover 21 is also provided on the shaft sleeve 10; The wind wheel 18 is provided with a plurality of air ducts 22 and blades 23. The blades 23 are located in the air ducts 22. Two guide rods 24 are symmetrically fixedly installed at both ends of each air duct 22. A cleaning piece 25 is slidably sleeved on the guide rod 24. A sensitive spring 26 is movably sleeved on the guide rod 24. The two ends of the sensitive spring 26 are respectively fixedly connected to the top wall of the air duct 22 and the top of the cleaning piece 25. A scraper 27 is fixedly installed at the bottom of the cleaning piece 25, and the scraper 27 is against the blades 23. An air outlet net 17 is commonly provided on one side of the bottom shell 1 and the surface shell 19, and an air inlet top shell 20 is provided on one side of the surface shell 19.

[0027] During specific implementation, the motor 9 is turned on to drive the shaft sleeve 10 and the wind wheel 18 to rotate. At this time, the air duct 22 and the blades 23 can be used to suck the outside air into the bottom shell 1 through the air inlet top shell 20, and then discharge it through the air outlet net 17, so that the blowing effect can be achieved. Centrifugal force will be generated in the process of the rotation of the blades 23. At this time, the centrifugal force will drive the cleaning member 25 and the scraping member 27 to slide downward along the direction set by the guide rod 24, and scrape off the dust adhered to the inner wall of the air duct 22. The scraped dust will then float upward due to the downward movement of the cleaning member 25. At this time, the dust will push the blocking plate 42 to rotate with the mounting seat 41 as the axis, so as to facilitate the collection of dust into the dust hopper 40, and avoid the problem of vibration of the blades 23 caused by the influence of dust.

[0028] It should be noted that, although some structures are also provided on the blades 23, since some of the blades 23 are provided with structures of equal quantity and position, there will be no problem of vibration and shaking of the blades 23.

[0029] See also Figure 1-9 A power cord 11 is arranged on the bottom shell 1, a wire protection sleeve 8 is arranged on the power cord 11, a power cord buckle 12 is also arranged on the bottom shell 1, and the power cord buckle 12 is clamped with the power cord 11. A plurality of first foot pads 13 and second foot pads 14 are arranged between the bottom shell 1 and the surface shell 19, and an overheating protection component is also included. The overheating protection component includes a socket 15 and a power overload protector 16. The socket 15 and the power overload protector 16 are both arranged in the bottom shell 1, and the socket 15, the power overload protector 16 and the negative pressure blowing component are electrically connected. A capacitor 2 is arranged in the bottom shell 1, and a switch splint 3, a gear switch 4, a three-gear non-timing panel 5, a switch knob 6 and a socket panel 7 are arranged on the bottom shell 1. The capacitor 2, the switch splint 3, the gear switch 4, the three-gear non-timing panel 5, the switch knob 6, the socket panel 7 and the negative pressure blowing component are electrically connected to each other.

[0030] In specific implementation, on the basis of the above implementation, by arranging the socket panel 7 and the socket 15 in the bottom shell 1, a power diverter can be arranged in the bottom shell 1, so that the fan has a dual thermal protection function and improves safety.

[0031] See also Figure 1-9A wind collecting frame 28 is fixedly installed on the top of the cleaning member 25, and a wind guide scoop 29 is fixedly inserted on one side of the wind collecting frame 28. A fixed cavity 30 is provided inside the wind collecting frame 28, and the fixed cavity 30 is communicated with the wind guide scoop 29. A connecting pipe 31 is fixedly inserted at the center of one side of the cleaning member 25. A plurality of air guide pipes 32 are fixedly inserted on the top of the cleaning member 25, and a delivery pipe 33 is fixedly inserted between every two air guide pipes 32. The side of the connecting pipe 31 away from the wind collecting frame 28 is fixedly inserted in one of the delivery pipes 33. An air jet 34 is provided inside the scraping member 27, and the air jet 34 is communicated with the delivery pipe 33. A storage cavity 35 is also provided in the wind collecting frame 28, and two heating blocks 36 are symmetrically installed in the storage cavity 35. Electric heating wires are embedded in the heating blocks 36. A fixed port 37 is provided in the wind collecting frame 28, and a waterproof and breathable membrane 38 is provided in the fixed port 37. Clean water is stored in the storage cavity 35.

[0032] In specific implementation, on the basis of the above implementation, during the downward movement of the scraper 27, since the wind collecting frame 28 not only moves downward but also rotates with the blades 23, the airflow will enter the wind collecting frame 28 through the wind guide 29. At the same time, by turning on the heating block 36, the heating block 36 can generate heat to heat the clean water stored in the storage chamber 35. The heated clean water will produce water vapor and mix with the airflow through the waterproof and breathable membrane 38. Finally, the hot airflow will be sprayed on the stubborn dust through the jet port 34, thereby improving the dust scraping effect of the scraper 27.

[0033] See also Figure 1-9 A storage groove 39 is provided at the bottom of the cleaning piece 25, and a dust hopper 40 is slidably inserted on one side of the cleaning piece 25. Two pads are symmetrically arranged in the storage groove 39, and the pads are against the bottom of the dust hopper 40. A dust suction groove is provided at the bottom of the dust hopper 40, and a mounting seat 41 is provided in the dust suction groove. A pin shaft 43 is provided in the mounting seat 41, and a sealing plate 42 is rotatably sleeved on the pin shaft 43. The sealing plate 42 is rotatably installed in the dust suction groove, and a spring is provided on the mounting seat 41, and the other end of the spring is provided on the sealing plate 42.

[0034] In specific implementation, based on the above implementation, the scraped dust will float upward due to the downward movement of the cleaning member 25. At this time, the dust will push the blocking plate 42 to rotate around the mounting seat 41, thereby facilitating the collection of the dust into the dust hopper 40 and preventing the dust from adhering to the surface of the blade 23 for the second time.

[0035] It should be noted here that when the dust hopper 40 is almost full of dust, the dust hopper 40 can be pulled and pulled out of the cleaning piece 25, so that the dust in the dust hopper 40 can be easily cleaned. In order to prevent the centrifugal force from affecting the stability of the dust hopper 40, a positioning buckle can be provided on the cleaning piece 25, and the positioning buckle can be connected with the dust hopper 40 to achieve the effect of positioning the dust hopper 40. Since the connection between the positioning buckle and the dust hopper 40 belongs to the existing well-known technology and is not a problem to be solved in the background technology of this specification, it will not be explained in detail.

[0036] See also Figure 1-9 A partition plate 44 is fixedly installed in the center of one of the delivery pipes 33. The airflow introduced into the delivery pipe 33 can be evenly divided. This helps to make the multiple air jets 34 spray evenly.

[0037] See also Figure 1-9 A handle 45 is fixedly mounted on the bottom shell 1, and an anti-skid pattern is arranged on the outer surface of the handle 45. The arrangement of the handle 45 can facilitate the movement of the bottom shell 1 by a person, thereby improving portability, and the arrangement of the anti-skid pattern on the handle 45 can increase the friction between the hand of the person and the handle 45, thereby helping to solve the problem of slipping when the person lifts the bottom shell 1.

[0038] Working principle: Before use, it is necessary to connect an external power source through the power cord 11, which can conveniently power the internal components of the bottom shell 1 and ensure the normal operation of the appliance. Since the connection between the power cord 11 and the external power source belongs to the existing technology, it will not be explained in detail.

[0039] When in use, the motor 9 is turned on to drive the shaft sleeve 10 and the wind wheel 18 to rotate. At this time, the air duct 22 and the blades 23 can be used to suck the outside air into the bottom shell 1 through the air inlet top shell 20, and then discharged through the air outlet net 17, thereby achieving a blowing effect. In addition, by arranging the socket panel 7 and the socket 15 in the bottom shell 1, a power diverter can be arranged in the bottom shell 1, so that the fan has a dual thermal protection function, thereby improving safety.

[0040] During the rotation of the blades 23, centrifugal force will be generated. At this time, the centrifugal force will drive the cleaning member 25 and the scraping member 27 to slide downward along the direction set by the guide rod 24, and scrape off the dust adhering to the inner wall of the air inlet 22. Then, the scraped dust will float upward due to the downward movement of the cleaning member 25. At this time, the dust will push the blocking plate 42 to rotate around the mounting seat 41 as the axis, thereby facilitating the collection of dust into the dust hopper 40 and avoiding the problem of vibration of the blades 23 caused by the influence of dust.

[0041] During the downward movement of the scraper 27, since the wind collecting frame 28 not only moves downward but also rotates with the blades 23, the airflow will enter the wind collecting frame 28 through the wind guide scoop 29. At the same time, the heating block 36 is turned on to make the heating block 36 generate heat to heat the clean water stored in the storage chamber 35. The heated clean water will produce water vapor and mix with the airflow through the waterproof and breathable membrane 38. Finally, the hot airflow will be sprayed on the stubborn dust through the jet port 34, thereby improving the dust scraping effect of the scraper 27.

[0042] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A low-level fan, comprising a bottom casing (1), characterized in that: A surface shell (19) is provided on one side of the bottom shell (1), and the surface shell (19) and the bottom shell (1) form a mounting cavity, in which a negative pressure blowing component is provided; The negative pressure blowing assembly comprises a motor (9), the motor (9) being fixedly mounted in the mounting cavity, the motor (9) being provided with a shaft sleeve (10), the shaft sleeve (10) being provided with a wind wheel (18), and the shaft sleeve (10) being further provided with a protective cover (21); The wind wheel (18) is provided with a plurality of air inlets (22) and blades (23), wherein the blades (23) are located in the air inlets (22), and two guide rods (24) are symmetrically fixedly installed at both ends of each of the air inlets (22), a cleaning piece (25) is slidably sleeved on the guide rod (24), and a sensitive spring (26) is movably sleeved on the guide rod (24), and the two ends of the sensitive spring (26) are respectively fixedly connected to the top wall of the air inlet (22) and the top of the cleaning piece (25), and a scraper (27) is fixedly installed at the bottom of the cleaning piece (25), and the scraper (27) abuts against the blades (23).

2. A low-level fan according to claim 1, characterized in that: A power cord (11) is provided on the bottom shell (1), a wire protection sleeve (8) is provided on the power cord (11), and a power cord buckle (12) is also provided on the bottom shell (1), the power cord buckle (12) being snap-connected to the power cord (11).

3. A low-level fan according to claim 1, characterized in that: A plurality of first foot pads (13) and second foot pads (14) are also provided between the bottom shell (1) and the surface shell (19).

4. A low-level fan according to claim 1, characterized in that: An air outlet net (17) is provided on one side of the bottom shell (1) and the surface shell (19), and an air inlet top shell (20) is provided on one side of the surface shell (19).

5. A low-level fan according to claim 1, characterized in that: The invention also comprises an overheating protection component, wherein the overheating protection component comprises a socket (15) and a power overload protector (16), wherein the socket (15) and the power overload protector (16) are both arranged in the bottom shell (1), and the socket (15), the power overload protector (16) and the negative pressure blowing component are all electrically connected, wherein a capacitor (2) is arranged in the bottom shell (1), and a switch clamp (3), a gear switch (4), a three-gear non-timing panel (5), a switch knob (6) and a socket panel (7) are arranged on the bottom shell (1), and the capacitor (2), the switch clamp (3), the gear switch (4), the three-gear non-timing panel (5), the switch knob (6), the socket panel (7) and the negative pressure blowing component are electrically connected to each other.

6. A low-level fan according to claim 1, characterized in that: A wind collecting frame (28) is fixedly installed on the top of the cleaning member (25), and a wind guide scoop (29) is fixedly inserted on one side of the wind collecting frame (28). A fixed cavity (30) is provided inside the wind collecting frame (28), and the fixed cavity (30) is communicated with the wind guide scoop (29). A connecting pipe (31) is fixedly inserted at the center of one side of the cleaning member (25). A plurality of air guide pipes (32) are fixedly inserted on the top of the cleaning member (25), and a delivery pipe (33) is fixedly inserted between every two of the air guide pipes (32). The side of the connecting pipe (31) away from the wind collecting frame (28) is fixedly inserted into one of the delivery pipes (33). An air jet (34) is provided inside the scraping member (27), and the air jet (34) is communicated with the delivery pipe (33).

7. A low-level fan according to claim 6, characterized in that: The wind collecting frame (28) is further provided with a storage cavity (35), in which two heating blocks (36) are symmetrically mounted, and in which electric heating wires are embedded, a fixing opening (37) is provided in the wind collecting frame (28), and a waterproof breathable membrane (38) is arranged in the fixing opening (37), and clean water is stored in the storage cavity (35).

8. A low-level fan according to claim 1, characterized in that: A storage groove (39) is provided at the bottom of the cleaning member (25); a dust hopper (40) is slidably inserted at one side of the cleaning member (25); two cushion blocks are symmetrically arranged in the storage groove (39); the cushion blocks abut against the bottom of the dust hopper (40); a dust suction groove is provided at the bottom of the dust hopper (40); a mounting seat (41) is provided in the dust suction groove; a pin shaft (43) is provided in the mounting seat (41); a sealing plate (42) is rotatably sleeved on the pin shaft (43); the sealing plate (42) is rotatably mounted in the dust suction groove; a spring is provided on the mounting seat (41); the other end of the spring is arranged on the sealing plate (42).

9. A low-level fan according to claim 6, characterized in that: A partition plate (44) is fixedly mounted at the center of one of the delivery pipes (33).

10. A low-level fan according to claim 1, characterized in that: A handle (45) is fixedly mounted on the bottom shell (1), and an outer surface of the handle (45) is provided with anti-slip patterns.

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