Low-level fan

Abstract

The application discloses a low-position fan and relates to the technical field of fans, which comprises 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, a negative pressure air blowing assembly is arranged in the installation cavity, the negative pressure air blowing assembly comprises a motor, the motor is fixedly installed in the installation cavity, a shaft sleeve is arranged on the motor, a wind wheel is arranged on the shaft sleeve, a protective cover is further arranged on the shaft sleeve, a plurality of air guide openings and blades are formed in the wind wheel, two guide rods are symmetrically and fixedly installed at two ends in each air guide opening, and a cleaning piece is slidably sleeved on the guide rod; centrifugal force is generated in the process that the blades rotate, at this time, the centrifugal force drives the cleaning piece and the scraping piece to slide downward along the direction in which the guide rods are arranged, dust adhered to the inner side wall of the air guide opening is scraped off, and the problem that the blades are prone to vibration due to the influence of the dust is avoided.

Description

Technical Field

[0001] This invention relates to the field of wind turbine technology, specifically a low-level wind turbine. Background Technology

[0002] A low-position fan is a specially designed fan that is typically installed at a lower position in equipment or systems to achieve specific functions or optimize performance. Low-position fans are commonly used in equipment such as air conditioning units and heat pump air blowers to optimize airflow and heat exchange efficiency through their low-position setting.

[0003] For example, a Chinese patent (publication number: CN109838399A) discloses a fan, which includes: a conveying component, a power component, a fan housing, and a filtering device. The conveying component is used to convey air, and the power component is connected to the conveying component and used to drive the conveying component. The conveying component is partially covered by the fan housing, which is used to protect the conveying component. The conveying component has M air outlets at the end away from the fan housing, where 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 aforementioned design of a fan has some drawbacks in actual use: the existing fan relies on input mechanical energy to increase gas pressure and discharge gas, mainly used for gas compression and transportation. However, after long-term use, a large amount of dust will adhere to the internal blades of the existing fan. Dust accumulation will cause uneven mass distribution of the impeller, causing vibration, affecting the normal operation of the fan, and may shorten the equipment life and increase unnecessary maintenance costs.

[0005] To address these issues, we designed a low-position fan. Summary of the Invention

[0006] The purpose of this invention is to provide a low-level fan that generates centrifugal force during blade rotation. This centrifugal force causes the cleaning and scraping components to slide downwards along the direction of the guide rod, scraping off the dust adhering to the inner wall of the air inlet. This avoids the problem of blade vibration caused by dust, thus solving the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides a low-position fan, including a bottom shell, a front shell is provided on one side of the bottom shell, the front shell and the bottom shell form an installation cavity, and a negative pressure blowing assembly is provided in the installation cavity;

[0008] The negative pressure blower assembly includes a motor, which is fixedly installed in the mounting cavity. The motor is provided with a bushing, the bushing is provided with a fan wheel, and the bushing is also provided with a protective cover.

[0009] The impeller has multiple air inlets and blades. The blades are located inside the air inlets. Two guide rods are symmetrically fixed at both ends of each air inlet. A cleaning component is slidably sleeved on the guide rod. A sensitive spring is movably sleeved on the guide rod. The two ends of the sensitive spring are fixedly connected to the top wall inside the air inlet and the top of the cleaning component, respectively. A scraper is fixedly installed at the bottom of the cleaning component, and the scraper abuts against the blades.

[0010] Furthermore, a power cord is provided on the bottom shell, a protective sleeve is provided on the power cord, and a power cord buckle is also provided on the bottom shell, which is engaged with the power cord.

[0011] Furthermore, a plurality of first foot pads and second foot pads are provided between the bottom shell and the top shell.

[0012] Furthermore, an air outlet mesh is provided on one side of both the bottom shell and the top shell, and an air inlet top shell is provided on one side of the top shell.

[0013] Furthermore, it also includes an overheat protection component, which includes a socket and a power overload protector. The socket and the power overload protector are both located inside the bottom shell, and the socket, the power overload protector, and the negative pressure blower assembly are all electrically connected. A capacitor is installed inside the bottom shell, and a switch clamp, a gear switch, a three-gear non-timing panel, a switch knob, and a socket panel are installed on the bottom shell. The capacitor, the switch clamp, the gear switch, the three-gear non-timing panel, the switch knob, the socket panel, and the negative pressure blower assembly are electrically connected to each other.

[0014] Furthermore, an air collecting frame is fixedly installed on the top of the cleaning component, and an air guide hopper is fixedly inserted into one side of the air collecting frame. A fixed cavity is opened inside the air collecting frame, and the fixed cavity is connected to the air guide hopper. A connecting pipe is fixedly inserted into the center of one side of the cleaning component. Multiple air guide pipes are fixedly inserted into the top of the cleaning component. A conveying pipe is fixedly inserted between every two air guide pipes. The side of the connecting pipe away from the air collecting frame is fixedly inserted into one of the conveying pipes. An air jet is opened inside the scraper, and the air jet is connected to the conveying pipe.

[0015] Furthermore, the air collecting frame is provided with a storage cavity, in which two heating blocks are symmetrically installed. Each heating block is embedded with an electric heating wire. The air collecting frame is provided with a fixing port, in which a waterproof and breathable membrane is installed. The storage cavity is filled with clean water.

[0016] Furthermore, the bottom of the cleaning component has a storage groove, and a dust collection bucket is slidably inserted into one side of the cleaning component. Two pads are symmetrically arranged in the storage groove, and the pads abut against the bottom of the dust collection bucket. The bottom of the dust collection bucket has a dust collection groove, and a mounting base is provided in the dust collection groove. A pin is provided in the mounting base, and a sealing plate is rotatably sleeved on the pin. The sealing plate is rotatably installed in the dust collection groove. A spring is provided on the mounting base, and the other end of the spring is attached to the sealing plate.

[0017] Furthermore, a partition plate is fixedly installed at the center of one of the conveying pipes.

[0018] Furthermore, a handle is fixedly installed on the bottom shell, and the outer surface of the handle is provided with anti-slip texture.

[0019] Compared with the prior art, the beneficial effects of the present invention are: centrifugal force is generated during the rotation of the blades. At this time, the centrifugal force will drive the cleaning component and the scraper 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, thus avoiding the problem of blade vibration caused by the influence of dust.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: by turning on the negative pressure blowing assembly, the outside air can be drawn into the bottom shell through the air inlet and blades, and then discharged through the air outlet, thus achieving the blowing effect. By setting the socket panel and socket in the bottom shell, a power shunt can be installed in the bottom shell, thereby giving the fan a dual thermal protection function and improving safety.

[0021] Compared with the prior art, the beneficial effects of the present invention are: the dust scraped off will float upward due to the downward movement of the cleaning component. At this time, the dust will push the sealing plate to rotate around the mounting base as the axis, thereby making it easy to collect the dust into the dust collection hopper and avoid the dust from adhering to the blade surface again.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: During the downward movement of the scraper, since the air collecting frame not only moves downward but also rotates with the blades, the airflow will enter the air collecting frame through the air guide hopper. At the same time, by turning on the heating block, the heating block can heat up the water stored in the storage chamber. The heated water will generate water vapor, which will mix with the airflow through the waterproof and breathable membrane. Finally, the hot airflow will be sprayed onto the stubborn dust through the jet nozzle, which improves the scraping effect of the scraper on dust. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the overall external structure of the present invention;

[0024] Figure 2 This is an exploded view of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the wind turbine of the present invention, showing only its external structure.

[0026] Figure 4 This is a three-dimensional structural diagram of the external cleaning component of the present invention;

[0027] Figure 5 This is a three-dimensional structural schematic diagram showing a half-section view of the internal structure of the cleaning component and the air collection frame of the present invention;

[0028] Figure 6 This is a three-dimensional structural diagram of the external side of the air guide hopper of the present invention;

[0029] Figure 7 This is a three-dimensional structural diagram of the scraper component of the present invention, viewed from below.

[0030] Figure 8 For the present invention Figure 3 Enlarged view of point A in the middle;

[0031] Figure 9 For the present invention Figure 5 Enlarged view of point B in the middle.

[0032] In the diagram: 1. Bottom shell; 2. Capacitor; 3. Switch clamp; 4. Gear switch; 5. Three-position panel without timer; 6. Switch knob; 7. Socket panel; 8. Cable sleeve; 9. Motor; 10. Bushing; 11. Power cord; 12. Power cord clip; 13. First foot pad; 14. Second foot pad; 15. Socket; 16. Power overload protector; 17. Air outlet grille; 18. Fan wheel; 19. Front shell; 20. Air inlet top shell; 21. Protective cover; 22. Air vent; 3. Blade; 24. Guide rod; 25. Cleaning component; 26. Sensitive spring; 27. Scraper; 28. Air collector frame; 29. ​​Air guide hopper; 30. Fixed cavity; 31. Connecting pipe; 32. Air guide pipe; 33. Delivery pipe; 34. Air nozzle; 35. Storage cavity; 36. Heating block; 37. Fixing port; 38. Waterproof and breathable membrane; 39. Storage slot; 40. Dust collection hopper; 41. Mounting base; 42. Sealing plate; 43. Pin; 44. Divider plate; 45. Handle. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Please see Figure 1-9 The present invention provides a technical solution: a low-position fan, including a bottom shell 1, a front shell 19 is provided on one side of the bottom shell 1, the front shell 19 and the bottom shell 1 form an installation cavity, and a negative pressure blowing assembly is provided in the installation cavity;

[0037] The negative pressure blower assembly includes a motor 9, which is fixedly installed in the mounting cavity. A bushing 10 is provided on the motor 9, a fan wheel 18 is provided on the bushing 10, and a protective cover 21 is also provided on the bushing 10.

[0038] The impeller 18 has multiple air inlets 22 and blades 23. The blades 23 are located inside the air inlets 22. Two guide rods 24 are symmetrically fixed at both ends inside each air inlet 22. A cleaning component 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 fixedly connected to the top wall inside the air inlet 22 and the top of the cleaning component 25, respectively. A scraper 27 is fixedly installed at the bottom of the cleaning component 25. The scraper 27 abuts against the blades 23. An air outlet net 17 is provided on one side of the bottom shell 1 and the top shell 19. An air inlet top shell 20 is provided on one side of the top shell 19.

[0039] In practice, turning on the motor 9 will drive the bushing 10 and the impeller 18 to rotate. At this time, in conjunction with the air inlet 22 and the blades 23, outside air can be drawn into the bottom shell 1 through the air inlet top shell 20 and then discharged through the air outlet 17, thus achieving the blowing effect. During the rotation of the blades 23, centrifugal force will be generated. At this time, the centrifugal force will drive the cleaning component 25 and the scraper 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 component 25. At this time, the dust will push the sealing plate 42 to rotate around the mounting base 41 as the axis, so as to facilitate the collection of dust into the dust collection hopper 40 and avoid the problem of blade 23 vibration caused by the dust.

[0040] It should be noted that although some structures are also set on the blades 23, since all blades 23 have equal amounts of equally positioned structures, there will be no problem of blades 23 vibrating or shaking.

[0041] See Figure 1-9 The bottom shell 1 is equipped with a power cord 11, a protective sleeve 8, and a power cord clip 12. The power cord clip 12 is connected to the power cord 11. Multiple first foot pads 13 and second foot pads 14 are provided between the bottom shell 1 and the front shell 19. The system also includes an overheat protection component, which includes a socket 15 and a power overload protector 16. The socket 15 and the power overload protector 16 are both located inside the bottom shell 1 and are electrically connected to the negative pressure blower assembly. A capacitor 2 is provided inside the bottom shell 1. The bottom shell 1 is equipped with a switch clamp 3, a gear switch 4, a three-gear timerless panel 5, a switch knob 6, and a socket panel 7. The capacitor 2, switch clamp 3, gear switch 4, three-gear timerless panel 5, switch knob 6, socket panel 7, and negative pressure blower assembly are electrically connected to each other.

[0042] In specific implementation, based on the above implementation, by setting a socket panel 7 and a socket 15 inside the bottom shell 1, a power shunt can be installed inside the bottom shell 1, thereby enabling the fan to have dual thermal protection function and improving safety.

[0043] See Figure 1-9The top of the cleaning component 25 is fixedly equipped with an air collecting frame 28, and an air guide hopper 29 is fixedly inserted into one side of the air collecting frame 28. The air collecting frame 28 has a fixed cavity 30 inside, which is connected to the air guide hopper 29. A connecting pipe 31 is fixedly inserted into the center of one side of the cleaning component 25. Multiple air guide pipes 32 are fixedly inserted into the top of the cleaning component 25. A conveying pipe 33 is fixedly inserted between every two air guide pipes 32. The side of the connecting pipe 31 away from the air collecting frame 28 is fixedly inserted into one of the conveying pipes 33. The scraper 27 has an air jet vent 34 inside, which is connected to the conveying pipe 33. The air collecting frame 28 also has a storage cavity 35 inside, in which two heating blocks 36 are symmetrically installed. Electric heating wires are embedded in the heating blocks 36. The air collecting frame 28 has a fixed opening 37 inside, in which a waterproof and breathable membrane 38 is installed. The storage cavity 35 stores clean water.

[0044] In specific implementation, based on the above implementation, during the downward movement of the scraper 27, the air collecting frame 28 not only moves downward but also rotates with the blades 23. At this time, the airflow enters the air collecting frame 28 through the air guide hopper 29. At the same time, by turning on the heating block 36, the heating block 36 can heat up the water stored in the storage chamber 35. The heated water will generate water vapor, which will mix with the airflow through the waterproof and breathable membrane 38. Finally, the hot airflow will be sprayed onto the stubborn dust through the jet nozzle 34, which improves the dust removal effect of the scraper 27.

[0045] See Figure 1-9 The bottom of the cleaning component 25 is provided with a storage groove 39. A dust collection bucket 40 is slidably inserted into one side of the cleaning component 25. Two pads are symmetrically arranged in the storage groove 39. The pads abut against the bottom of the dust collection bucket 40. A dust collection groove is provided at the bottom of the dust collection bucket 40. A mounting base 41 is provided in the dust collection groove. A pin 43 is provided in the mounting base 41. A sealing plate 42 is rotatably sleeved on the pin 43. The sealing plate 42 is rotatably installed in the dust collection groove. A spring is provided on the mounting base 41. The other end of the spring is set on the sealing plate 42.

[0046] In practice, based on the above implementation, the dust scraped off will float upwards due to the downward movement of the cleaning component 25. At this time, the dust will push the sealing plate 42 to rotate around the mounting base 41 as the axis, so as to facilitate the collection of dust into the dust collection hopper 40 and prevent the dust from adhering to the surface of the blade 23 again.

[0047] It should be noted that when the dust collection bucket 40 is almost full, it can be pulled out of the cleaning component 25 to facilitate cleaning. To avoid centrifugal force affecting the stability of the dust collection bucket 40, a positioning buckle can be set on the cleaning component 25 to engage with the dust collection bucket 40, thus achieving the effect of positioning the dust collection bucket 40. Since the positioning buckle and the engagement between the dust collection bucket 40 are existing and well-known technologies, and are not problems that need to be solved in the background technology of this manual, they will not be explained in detail.

[0048] See Figure 1-9 A partition plate 44 is fixedly installed in the center of one of the delivery pipes 33. This can evenly distribute the airflow entering the delivery pipe 33, which helps to ensure that the multiple jet nozzles 34 spray air uniformly.

[0049] See Figure 1-9 A handle 45 is fixedly installed on the bottom shell 1, and the outer surface of the handle 45 is provided with anti-slip texture. The handle 45 makes it convenient for people to carry the bottom shell 1 and move it, improving portability. The anti-slip texture on the handle 45 increases the friction between the person's hand and the handle 45, thereby helping to solve the problem of slippage when the person lifts the bottom shell 1.

[0050] Working principle: Before use, an external power source needs to be connected via power cord 11 to facilitate power supply to the internal components of the bottom shell 1, ensuring the normal operation of the electrical appliance. Since the connection between power cord 11 and external power source is existing technology, it will not be explained in detail.

[0051] When in use, turning on the motor 9 will cause the motor 9 to drive the bushing 10 and the impeller 18 to rotate. At this time, in conjunction with the air inlet 22 and the blades 23, outside air can be drawn into the bottom shell 1 through the air inlet top shell 20 and then discharged through the air outlet 17, thus achieving the blowing effect. In addition, by setting the socket panel 7 and socket 15 in the bottom shell 1, a power splitter can be set in the bottom shell 1, so that the fan has a dual thermal protection function and improves safety.

[0052] During the rotation of blade 23, centrifugal force is generated. At this time, the centrifugal force will drive the cleaning component 25 and the scraper 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. Subsequently, the scraped dust will float upward due to the downward movement of the cleaning component 25. At this time, the dust will push the sealing plate 42 to rotate around the mounting base 41 as the axis, so as to facilitate the collection of dust into the dust collection hopper 40 and avoid the problem of blade 23 vibration caused by the dust.

[0053] As the scraper 27 moves downward, the air collecting frame 28 not only moves downward but also rotates with the blades 23. At this time, the airflow enters the air collecting frame 28 through the air guide hopper 29. Simultaneously, the heating block 36 is activated, which heats the water stored in the storage chamber 35. The heated water produces water vapor, which mixes with the airflow through the waterproof and breathable membrane 38. Finally, the hot airflow is sprayed onto the stubborn dust through the jet nozzle 34, improving the dust removal effect of the scraper 27.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A low-level fan, comprising a base shell (1), characterized in that, A face shell (19) is provided on one side of the bottom shell (1), and the face shell (19) and the bottom shell (1) form an installation cavity, and a negative pressure blowing assembly is provided in the installation cavity; The negative pressure blower assembly includes a motor (9), which is fixedly installed in the mounting cavity. A bushing (10) is provided on the motor (9), and a fan wheel (18) is provided on the bushing (10). A protective cover (21) is also provided on the bushing (10). The impeller (18) is provided with multiple air inlets (22) and blades (23). The blades (23) are located inside the air inlets (22). Two guide rods (24) are symmetrically fixed at both ends inside each air inlet (22). A cleaning component (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 fixedly connected to the top wall inside the air inlet (22) and the top of the cleaning component (25), respectively. A scraper (27) is fixedly installed at the bottom of the cleaning component (25). The scraper (27) abuts against the blades (23). The top of the cleaning component (25) is fixedly equipped with an air collecting frame (28), and an air guide hopper (29) is fixedly inserted into one side of the air collecting frame (28). A fixed cavity (30) is opened inside the air collecting frame (28), and the fixed cavity (30) is connected to the air guide hopper (29). A connecting pipe (31) is fixedly inserted into the center of one side of the air collecting frame (28). Multiple air guide pipes (32) are fixedly inserted into the top of the cleaning component (25). A conveying pipe (33) is fixedly inserted between every two air guide pipes (32). The side of the connecting pipe (31) away from the air collecting frame (28) is fixedly inserted into one of the conveying pipes (33). An air jet port (34) is opened inside the scraper (27), and the air jet port (34) is connected to the conveying pipe (33). The air collecting frame (28) is also provided with a storage cavity (35). Two heating blocks (36) are symmetrically installed in the storage cavity (35). The heating blocks (36) are inlaid with electric heating wires. The air collecting frame (28) is provided with a fixing port (37). A waterproof and breathable membrane (38) is provided in the fixing port (37). The storage cavity (35) stores clean water.

2. A low-level fan as described in claim 1, characterized in that: A power cord (11) is provided on the bottom shell (1), a protective sleeve (8) is provided on the power cord (11), and a power cord buckle (12) is also provided on the bottom shell (1), which is engaged with the power cord (11).

3. A low-level fan as described in claim 1, characterized in that: The bottom shell (1) and the front shell (19) are provided with an air outlet mesh (17) on one side, and the front shell (19) is provided with an air inlet top shell (20) on one side.

4. A low-level fan as described in claim 1, characterized in that: It also includes an overheat protection component, which includes a socket (15) and a power overload protector (16). The socket (15) and the power overload protector (16) are both located inside the bottom shell (1), and the socket (15), the power overload protector (16) and the negative pressure blower are electrically connected. A capacitor (2) is provided inside the bottom shell (1). 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 provided on the bottom shell (1). 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 blower are electrically connected to each other.

5. A low-level fan as described in claim 1, characterized in that: A partition plate (44) is fixedly installed in the center of one of the conveying pipes (33).

6. A low-level fan as described in claim 1, characterized in that: A handle (45) is fixedly installed on the bottom shell (1), and the outer surface of the handle (45) is provided with anti-slip texture.

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