Silent dust collector

Abstract

The utility model discloses a mute type dust collector which comprises a housing, a back shell is arranged on the housing, a partition plate is arranged on the back shell, and a filter screen cover is arranged at the position of the partition plate. A closed cylinder is arranged in the housing, a spiral notch is formed in the closed cylinder, first sound insulation cotton is arranged on the inner wall of the closed cylinder and the spiral notch, a spiral cooling copper pipe is arranged on the first sound insulation cotton, radiators are arranged on the two sides of the closed cylinder, first air outlets are formed in the two sides of each radiator, and a first communicating pipe is arranged between the two radiators; an infusion pump is arranged at the communicating pipe; exhaust fans are arranged in the closed cylinder, exhaust inlets of the two exhaust fans are communicated through a second communicating pipe, second air outlets are formed in the two sides of the housing respectively, and air outlets of the two exhaust fans are communicated with a third communicating pipe respectively; a hose is installed on the back shell, and a suction cup is arranged on the hose. The utility model provides the mute dust collector which is quiet in use, is low in noise, enables a user to feel more pleasant and not irritable in use, and is worthy of popularization and application.

Description

Technical Field

[0001] This utility model relates to a vacuum cleaner, and more particularly to a silent vacuum cleaner. Background Technology

[0002] Vacuum cleaners can be classified into upright, canister, and portable types based on their structure. The working principle of a vacuum cleaner is that an electric motor drives blades to rotate at high speed, creating negative air pressure within a sealed casing to suck up dust and debris.

[0003] Traditional vacuum cleaners often generate noise levels exceeding 70 decibels due to the high-speed operation of the fan and the friction between the airflow. This can significantly disrupt the user's auditory comfort and living environment. While traditional vacuum cleaner designs focus on improving suction power and battery life, noise reduction and comfortable use of vacuum cleaners are becoming increasingly important as the demand for higher quality home environments continues to rise.

[0004] Chinese utility model patent CN 222194886 U discloses a multi-functional vacuum cleaner, which includes a main body, a rotating motor inside the main body, an impeller driven by the rotating motor, a dust baffle, and a filter. A suction nozzle is connected to one end of the main body, and a function box is also included, which is matched and connected to the main body. The function box contains a control circuit board and a power supply assembly. The main body includes a shell and a dust cover matched and connected to one end of the shell. The shell is matched and connected to the function box. An installation slot, matching the lower shape of the function box, is provided on the upper part of the shell for insertion into the function box. A first magnet is provided at the end of the installation slot. A second magnet, corresponding to the first magnet, is provided on the function box. When the function box is inserted into the installation slot, it is attracted and connected by the magnetism of the first and second magnets. The rotating motor, power supply assembly, and control circuit board are electrically connected. This vacuum cleaner is noisy during operation, causing discomfort to the user. Utility Model Content

[0005] This utility model aims to overcome the shortcomings of the prior art by providing a silent vacuum cleaner that achieves a quiet operation when vacuuming dust and debris, thus meeting the needs for quiet operation and comfortable listening during cleaning.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: This silent vacuum cleaner includes a cover, a back cover that is inclinedly arranged and fixed to the top of the cover, a partition plate that is fixed to the top of the back cover cavity, and a filter screen that connects the inner and outer cavities of the partition plate is installed at the partition plate; a sealed cylinder is fixed inside the cover, and a spiral notch is provided on the inner wall of the sealed cylinder; a first sound insulation cotton is attached and fixed to both the inner wall of the sealed cylinder and the spiral notch; a spiral cooling copper pipe is installed at the spiral notch on the outer side of the first sound insulation cotton; a radiator installed on both sides of the sealed cylinder is provided on the cover, and a radiator is provided on both sides of the cover. The first air outlet has a spiral cooling copper pipe extending from both ends of a sealed cylinder and installed at the radiators on both sides. A first connecting pipe connects the two radiators, and a liquid pump is installed at the first connecting pipe. The liquid pump is installed inside the sealed cylinder. A pair of symmetrically arranged exhaust fans are fixed inside the sealed cylinder. The air intakes of the two exhaust fans are connected to the outer cavity of the partition through a second connecting pipe. The tail of the cover has a second air outlet on each side, and the air outlets of the two exhaust fans are connected to the two air outlets through a third connecting pipe. A flexible hose connected to the inner cavity of the partition is installed on the back cover, and a suction cup is installed at the outer end of the flexible hose. The partition and filter screen here are designed to filter inhaled dust and debris. The sealed cylinder, first sound insulation cotton, exhaust fan, second connecting pipe, second air outlet, and third connecting pipe are designed to isolate noise generated by the high-speed operation of the exhaust fan through the first sound insulation cotton, resulting in extremely low noise during vacuum cleaner operation and achieving a silent effect, thus making it more comfortable for the user. The spiral notch, spiral cooling copper pipe, radiator, first air outlet, first connecting pipe, and infusion pump are designed to ensure that the infusion pump and the two exhaust fans operate within the sealed cylinder. Heat accumulates inside the cylinder, and if it is not cooled in time, it will affect the operating efficiency of the exhaust fan and the infusion pump, and increase energy consumption. Based on this, through the circulation of the infusion pump, the coolant will circulate in the spiral cooling copper tube, thereby carrying away heat and dissipating it through the radiator. This prevents the heat generated by the exhaust fan and the infusion pump from accumulating in the sealed cylinder, thus making the vacuum cleaner operate more stably. The back shell and the cover are set at an angle, which can reduce the accumulation of dust and debris at the filter screen, avoid filter screen clogging, and the dust and debris can also easily settle at the bottom of the back shell for easy collection and disposal.

[0007] Further improvements include a 40° inclination between the back cover and the outer cover. This 40° inclination ensures the filter screen is tilted, preventing dust and debris from adhering to the outer contour and bottom surface of the filter screen, thus avoiding clogging and reduced filtration efficiency. Furthermore, the 40° inclination also facilitates dust and debris settling at the bottom of the back cover for easy collection and disposal.

[0008] To further improve the system, a second layer of sound-absorbing cotton is fixed to the outer contour of the sealed cylinder. The function of this second layer of sound-absorbing cotton is to further isolate noise, making the friction noise between the exhaust fan and the air more effectively isolated, thus making the vacuum cleaner quieter and more comfortable for the user.

[0009] Further improvements include the installation of bearings on the partition, with a thrust bearing mounted on the partition on the outside of the bearings. A round steel sleeve is fitted around the inner ring of the bearing, and several through holes are opened on the outer contour and bottom surface of the round steel sleeve. A circular ring plate is fixed to the top of the round steel sleeve and rests on the top of the thrust bearing. An end cap is threaded to the top of the back shell, and a brushless motor is fixed on the end cap. A rotating shaft that drives the round steel sleeve to rotate is fixed on the shaft of the brushless motor. The outer contour of the round steel sleeve has an inward concave groove, and the filter screen is fitted into the inward concave groove. The function of the round steel sleeve, through hole, brushless motor, rotating shaft, and concave groove here is to drive the filter screen to rotate at high speed, thereby throwing away the dust and debris adsorbed on the filter screen. This prevents the filter screen from becoming severely clogged, which would affect the dust collection quality. After the dust and debris are thrown away, the surface of the filter screen is clean and unclogging, thus reducing the frequency of filter screen replacement, lowering costs, and simplifying the replacement process. The brushless motor here operates with minimal noise. The function of the bearings, thrust bearings, and annular plates here is to... This design ensures that the round steel sleeve is positioned at the bearing and axially pressed against the thrust bearing by the annular plate. This causes the rotating shaft to press against the bottom of the round steel sleeve and rotate, resulting in stable operation of the round steel sleeve and preventing axial movement. This achieves the goal of stable operation without shaking during rotation. When the filter screen cannot be used, simply unscrew the end cap to pull it outward, which will also pull out the round steel sleeve and the filter screen located on it, making it convenient and effortless to replace the filter screen.

[0010] Further improvements include four fixed support pillars at the bottom corners of the casing, arranged in an outward "V" shape. Each pillar has a connector hole, and a rod is inserted into each hole. A shock-absorbing spring is installed between the rod and the connector hole. A sphere made of PTFE (polytetrafluoroethylene) is ball-jointed at the bottom of each rod. The function of the support pillars, connector holes, rods, and shock-absorbing springs is to reduce vibrations generated during vacuum cleaner operation, thus preventing vibration noise caused by the vacuum cleaner contacting the ground. The outward "V" shape of the support pillars further enhances the stability of the vacuum cleaner during operation. The spheres rotate when the vacuum cleaner is pulled by the hose, making it easier to move the vacuum cleaner to the designated location for cleaning (rolling friction). Furthermore, the spheres are made of self-lubricating PTFE, resulting in low frictional resistance and smoother rolling, making it easier to move the vacuum cleaner with the hose.

[0011] Further improvements include the addition of stiff bristles on the suction cup. These bristles are used to brush away and remove dirt stuck to the ground.

[0012] Further improvements include a slag discharge hole at the bottom of the back shell, plugged with a rubber stopper. The purpose of the slag discharge hole and rubber stopper is to facilitate the quick and complete removal of dust and slag trapped inside the back shell.

[0013] Further improvements include the installation of a high-capacity lithium battery inside the casing, and an on / off switch fixed to the casing. This switch is connected to the wiring for the high-capacity lithium battery, brushless motor, two exhaust fans, and infusion pump. The purpose of the high-capacity lithium battery and the on / off switch is to allow the vacuum cleaner to be used flexibly, even in confined spaces, eliminating the need for a power cord and addressing the limitation of cleaning space.

[0014] Further improvements include a plug fixed to the casing for connection to the high-capacity lithium battery circuitry. The purpose of this plug is to facilitate charging the high-capacity lithium battery.

[0015] The beneficial effects of this utility model are:

[0016] 1) The dust and debris inhaled can be filtered through baffles and filter screens;

[0017] 2) Through the sealed cylinder, the first sound insulation cotton, the exhaust fan, the second connecting pipe, the second air outlet, and the third connecting pipe, when the exhaust fan is running at high speed and generating strong suction, the first sound insulation cotton can isolate the noise, so that the vacuum cleaner runs with extremely low noise, achieving a silent effect, thus making it more comfortable for the user.

[0018] 3) The spiral notch, spiral cooling copper pipe, radiator, first air outlet, first connecting pipe, and infusion pump enable the infusion pump and two exhaust fans to accumulate heat in the sealed cylinder during operation. If the heat is not cooled in time, it will affect the operating efficiency of the exhaust fans and infusion pump and increase energy consumption. Based on this, through the circulation of the infusion pump, the coolant will circulate in the spiral cooling copper pipe, thereby carrying away the heat and dissipating it through the radiator. This prevents the heat generated by the exhaust fans and infusion pump from accumulating in the sealed cylinder, thus making the vacuum cleaner operate more stably.

[0019] 4) The filter screen can be driven to rotate at high speed through bearings, thrust bearings, round steel sleeves, through holes, circular ring plates, brushless motors, rotating shafts, and concave circular grooves. This allows the dust and debris adsorbed on the filter screen to be thrown away, preventing severe clogging of the filter screen and affecting the dust collection quality. After the dust and debris are thrown away, the surface of the filter screen is clean and unclogging, which can reduce the frequency of filter screen replacement, reduce costs, and reduce the hassle of filter screen replacement. Attached Figure Description

[0020] Figure 1 The three-dimensional representation of this utility model Figure 1 ;

[0021] Figure 2 This is a three-dimensional view from another side of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the structure of this utility model;

[0023] Figure 4 for Figure 1 AA cross-section view;

[0024] Figure 5 for Figure 3 BB cross-section;

[0025] Figure 6 This is a schematic diagram of the structure of the circular steel sleeve area in this utility model;

[0026] Figure 7 This is a structural schematic diagram of the support column area in this utility model;

[0027] Figure 8 This is a perspective view of the round steel sleeve in this utility model.

[0028] Explanation of reference numerals in the attached drawings: 1. Cover shell; 1-1. First air outlet; 1-2. Second air outlet; 1-3. Insertion hole; 2. Back shell; 2-1. Slag discharge hole; 3. Partition plate; 4. Filter screen; 5. Sealed cylinder; 5-1. Spiral notch; 6. First sound insulation cotton; 7. Spiral cooling copper pipe; 8. Radiator; 9. First connecting pipe; 10. Infusion pump; 11. Exhaust fan; 12. Second connecting pipe; 13. Flexible hose; 13-1. Suction cup; 13-2. Brush bristles; 14. Second sound insulation cotton; 15. Bearing; 16. Thrust bearing; 17. Round steel sleeve; 17-1. Through hole; 17-2. Circular ring plate; 17-3. Concave circular groove; 18. End cap; 19. Brushless motor; 19-1. Rotating shaft; 20. Column rod. 21. Shock-absorbing spring, 22. Ball, 23. Rubber plug, 24. High-capacity lithium battery, 25. On / off switch, 26. Plug, 27. Support, 27-1. Socket, 29. Third connecting pipe. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] Referring to the attached diagram: This silent vacuum cleaner includes a housing 1, with an inclined back shell 2 fixed to the top of the housing 1. A partition 3 is fixed to the top of the cavity of the back shell 2, and a filter screen 4 connecting the inner and outer cavities of the partition 3 is installed at the partition 3. A sealed cylinder 5 is fixed inside the housing 1. The inner wall of the sealed cylinder 5 has a spiral notch 5-1. First sound insulation cotton 6 is attached and fixed to both the inner wall of the sealed cylinder 5 and the spiral notch 5-1. A spiral cooling copper pipe 7 is installed at the spiral notch 5-1 on the outer side of the first sound insulation cotton 6. Radiators 8 are installed on both sides of the sealed cylinder 5 and mounted on the housing 1. First air outlets 1-1 are opened on both sides of the radiators 8 at the housing 1. Both ends of the copper tube 7 pass through the sealed cylinder 5 and are installed at the radiators 8 on both sides. A first connecting pipe 9 connects the two radiators 8. An infusion pump 10 is installed at the first connecting pipe 9 and is installed inside the sealed cylinder 5. A pair of symmetrically arranged exhaust fans 11 are fixed inside the sealed cylinder 5. The air intakes of the two exhaust fans 11 are connected to the outer cavity of the partition 3 through a second connecting pipe 12. The tail of the cover 1 has a second air outlet 1-2 on both sides. The air outlets of the two exhaust fans 11 are connected to the two air outlets 1-2 through a third connecting pipe 29. A flexible hose 13 connected to the inner cavity of the partition 3 is installed on the back cover 2. A suction cup 13-1 is installed at the outer end of the flexible hose 13.

[0031] The back shell 2 and the cover shell 1 are inclined at 40°.

[0032] A second layer of sound insulation cotton 14 is fixed on the outer contour of the sealed cylinder 5.

[0033] A bearing 15 is installed on the partition plate 3. A thrust bearing 16 is installed on the outside of the bearing 15 and mounted on the partition plate 3. A round steel sleeve 17 is fitted on the inner ring of the bearing 15. The outer contour and bottom surface of the round steel sleeve 17 are provided with several through holes 17-1. A circular ring plate 17-2 is fixed on the top of the round steel sleeve 17 and rests on the top of the thrust bearing 16. The top of the back shell 2 is threadedly connected to an end cover 18. A brushless motor 19 is fixed on the end cover 18. A rotating shaft 19-1 for driving the round steel sleeve 17 to rotate is fixed on the rotating shaft of the brushless motor 19. The outer contour of the round steel sleeve 17 is provided with an inward concave circular groove 17-3. The filter screen 4 is fitted into the inward concave circular groove 17-3.

[0034] Each of the four corners of the bottom of the cover 1 is fixed with a support column 27. The support columns 27 are spread outward in a figure-eight shape. Each support column 27 has a plug hole 27-1. A rod 20 is inserted into each plug hole 27-1. A shock-absorbing spring 21 is installed between the rod 20 and the plug hole 27-1. A ball 22 made of polytetrafluoroethylene is ball-jointed to the bottom of each rod 20.

[0035] The suction cup 13-1 is provided with stiff bristles 13-2.

[0036] The bottom of the back shell 2 has a slag discharge hole 2-1, and a rubber plug 23 is plugged into the slag discharge hole 2-1.

[0037] A high-capacity lithium battery 24 is fixed inside the casing 1. An on / off switch 25 is fixed on the casing 1. The on / off switch 25 is connected to the high-capacity lithium battery 24, the brushless motor 19, the two exhaust fans 11, and the infusion pump 10.

[0038] The cover 1 is fixed with a plug 26 that is connected to the circuit of the high-capacity lithium battery 24.

[0039] The working principle of this utility model is as follows: When the vacuum cleaner needs to be used, simply press the start / stop switch 25, which will cause the two exhaust fans 11, the infusion pump 10, and the brushless motor 19 to operate simultaneously. This will create a strong negative pressure at the suction cup 13-1, thereby sucking in dust and debris from the ground. The sucked-in dust and debris reach the inner cavity of the partition 3. At this time, driven by the brushless motor 19, the round steel sleeve 17 rotates, and the filter screen 4 on the round steel sleeve 17 also rotates synchronously, thus preventing dust and debris from adhering to the filter screen 4. The filter screen 4 can always achieve the best filtration effect. The filtered air passes through the filter screen 4 to the outer cavity of the partition 3, and then through the second connecting pipe 12 and the two exhaust fans to the third connecting pipe 29. The third connecting pipe 29 discharges the filtered air outward through the second air outlet 1-2. After the air settles, the dust and debris can be promptly discharged into the trash can by opening the rubber stopper 23, making it convenient to use the vacuum cleaner again. Since the infusion pump 10 and the two exhaust fans 11 accumulate heat in the sealed cylinder 5 during operation, if they are not cooled in time, it will directly affect the operating efficiency of the exhaust fans 11 and the infusion pump 10 and increase energy consumption. Therefore, when the infusion pump 10 is running, it can circulate the coolant in the spiral cooling copper pipe 7, thereby carrying away the heat and dissipating it through the radiator 8 at the first air outlet 1-1. This prevents the heat generated by the exhaust fans 11 and the infusion pump 10 from accumulating in the sealed cylinder 5, making the vacuum cleaner operate more stably. This utility model is quieter to use, with very little noise, and makes users feel more pleasant and less irritable. It is worth promoting and applying.

[0040] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A silent vacuum cleaner, comprising a housing (1), characterized in that: The top of the cover (1) is fixed with a back shell (2) that is inclined. The top of the cavity of the back shell (2) is fixed with a partition (3). A filter screen (4) that connects the inner and outer cavities of the partition (3) is installed at the partition (3). A sealed cylinder (5) is fixed inside the cover (1). The inner wall of the sealed cylinder (5) is provided with a spiral notch (5-1). A first sound insulation cotton (6) is attached and fixed to the inner wall of the sealed cylinder (5) and the spiral notch (5-1). A spiral cooling copper pipe (7) is installed at the spiral notch (5-1) on the outside of the first sound insulation cotton (6). A radiator (8) installed on the cover (1) is provided on both sides of the sealed cylinder (5). A first air outlet (1-1) is provided on both sides of the radiator (8) at the cover (1). The two ends of the spiral cooling copper pipe (7) pass through the sealed cylinder (5) and are installed at the radiators (8) on both sides. A first connecting pipe (9) is connected between the two radiators (8). An infusion pump (10) located inside the sealed cylinder (5) is installed at the first connecting pipe (9). A pair of symmetrically arranged exhaust fans (11) are fixed inside the sealed cylinder (5). The air inlets of the two exhaust fans (11) are connected to the outer cavity of the partition (3) through a second connecting pipe (12). The tail of the cover (1) has a second air outlet (1-2) on both sides. The air outlets of the two exhaust fans (11) are connected to the two air outlets (1-2) through a third connecting pipe (29). A flexible tube (13) is installed on the back shell (2) and communicates with the inner cavity of the partition (3). A suction cup (13-1) is installed at the outer end of the flexible tube (13).

2. A silent vacuum cleaner according to claim 1, characterized in that: The back shell (2) and the cover shell (1) are inclined at 40°.

3. A silent vacuum cleaner according to claim 1, characterized in that: A second layer of sound insulation cotton (14) is fixed on the outer contour of the sealed cylinder (5).

4. A silent vacuum cleaner according to claim 1, characterized in that: A bearing (15) is installed on the partition (3). A thrust bearing (16) is installed on the outside of the bearing (15) on the partition (3). A round steel sleeve (17) is fitted on the inner ring of the bearing (15). Several through holes (17-1) are opened on the outer contour and bottom surface of the round steel sleeve (17). A circular ring plate (17-2) is fixed on the top of the round steel sleeve (17) and placed on the top of the thrust bearing (16). An end cap (18) is threaded to the top of the back shell (2). A brushless motor (19) is fixed on the end cap (18). A rotating shaft (19-1) for driving the round steel sleeve (17) to rotate is fixed on the rotating shaft of the brushless motor (19). An inward circular groove (17-3) is opened on the outer contour of the round steel sleeve (17). The filter screen (4) is fitted on the inward circular groove (17-3).

5. A silent vacuum cleaner according to claim 1, characterized in that: The bottom corners of the cover (1) are fixed with pillars (27), and the pillars (27) are spread outward in a figure-eight shape. Each pillar (27) has a plug hole (27-1), and a rod (20) is inserted into each plug hole (27-1). A shock-absorbing spring (21) is installed between the rod (20) and the plug hole (27-1). The bottom end of each rod (20) is ball-jointed with a sphere (22) made of polytetrafluoroethylene material.

6. A silent vacuum cleaner according to claim 1, characterized in that: The suction cup (13-1) is provided with bristles (13-2).

7. A silent vacuum cleaner according to claim 1, characterized in that: The bottom end of the back shell (2) has a slag discharge hole (2-1), and a rubber plug (23) is plugged in the slag discharge hole (2-1).

8. A silent vacuum cleaner according to claim 4, characterized in that: A high-capacity lithium battery (24) is fixed inside the cover (1), and an on / off switch (25) is fixed on the cover (1). The on / off switch (25) is connected to the high-capacity lithium battery (24), the brushless motor (19), the two exhaust fans (11), and the infusion pump (10).

9. A silent vacuum cleaner according to claim 8, characterized in that: The housing (1) is fixed with a plug (26) that is connected to the circuit of the high-capacity lithium battery (24).

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