Mobile device

Abstract

A mobile device includes a main body, wheels, a vacuuming assembly, and a connecting shaft. The wheels are rotatably mounted on one side of the main body. The vacuuming assembly includes a turbine fan, a first pipe and a second pipe connected to the turbine fan, and a filter box. The turbine fan includes a turbine housing and an impeller. The turbine housing has a sealed cavity, and the impeller is rotatably mounted in the sealed cavity. The sealed cavity has an air inlet and an air outlet. The air inlet is connected to the first pipe, and the air outlet is connected to the filter box via the second pipe. One end of the connecting shaft is connected to the axle of the wheels, and the other end is connected to the impeller, so that the rotation of the wheels drives the impeller to rotate. Thus, the mobile device requires no external electricity or additional power source, relying solely on the movement of the wheels to drive the turbine fan for vacuuming, effectively achieving vacuuming of the contact surface between the wheels and the track.

Description

Technical Field

[0001] This application relates to the field of mechanical equipment, and more particularly to a mobile device with a dust-collecting function. Background Technology

[0002] In industrial production environments, stable equipment operation is crucial. However, dust accumulation on equipment can have numerous adverse effects. First, due to dust's poor thermal conductivity, dust buildup on the surfaces of heat-dissipating components such as motors, drives, and fans reduces heat transfer efficiency, hindering normal heat dissipation and causing internal temperatures to rise. Prolonged exposure to high temperatures can degrade electronic components, even causing damage and shortening the equipment's lifespan. Second, dust entering mechanical structures increases friction between components. For example, dust ingress into transmission gears, bearings, and guide rails acts like fine abrasive particles, accelerating wear. This not only affects equipment precision but can also lead to mechanical failures, rendering the equipment malfunction. Furthermore, dust accumulation on circuit boards can cause short circuits and signal interference. Dust may contain conductive materials, and when it accumulates to a certain level, it can create conductive paths between lines that shouldn't be connected. Simultaneously, dust can affect the insulation performance between electrical components, increasing the likelihood of signal interference and leading to malfunctions or instability.

[0003] As a core component of automated storage and retrieval systems, the stocker in a cleanroom is equipped with casters at its base, which bear the weight of the stocker. As the casters rotate along the tracks, friction and wear inevitably occur due to their contact with the tracks. The resulting dust accumulation threatens the normal operation of the equipment, causing malfunctions and severely impacting production. Therefore, an effective solution is needed to reduce dust hazards and ensure stable equipment operation and smooth production. Existing dust removal methods do not utilize brushes to clean the track surfaces. However, practice has shown that this brush cleaning method is not entirely effective at removing certain types of dust. Some dust particles are extremely fine and can adhere tightly to various surfaces of the equipment, making it impossible to effectively physically remove these stubborn dust particles, resulting in a large amount of dust remaining on the equipment. Utility Model Content

[0004] In view of this, this application provides a mobile device that does not require external power or an additional power source, but relies solely on the movement of the wheels to drive the turbine fan to rotate for dust collection, thereby effectively collecting dust from the contact surface between the wheels and the track.

[0005] A mobile device, comprising:

[0006] Main body;

[0007] The traveling wheels are rotatably mounted on the bottom side of the main body.

[0008] A dust collection assembly includes a turbine fan, a first pipe and a second pipe connecting the turbine fan, and a filter box. The turbine fan includes a turbine housing and an impeller. The turbine housing has a sealed cavity, and the impeller is rotatably disposed within the sealed cavity. The sealed cavity has an air inlet and an air outlet. The air inlet is connected to the first pipe, and the air outlet is connected to the filter box via the second pipe.

[0009] A connecting shaft is provided, with one end connected to the axle of the traveling wheel and the other end connected to the impeller, so that the traveling wheel rotates and drives the impeller to rotate.

[0010] The mobile device of this application connects a turbine fan and a traveling wheel via a connecting shaft. The power generated by the high-speed rotation of the traveling wheel on the track is transmitted to the turbine fan, causing the turbine impeller to rotate and create negative pressure. This negative pressure is then transmitted to the contact surface between the traveling wheel and the track, thereby achieving a dust-collecting effect. Thus, this mobile device not only collects dust but also saves energy.

[0011] In some embodiments, the mobile device further includes a connecting bracket, which is fixedly connected to the main body, and the turbine housing is fixedly mounted on the connecting bracket.

[0012] In some embodiments, the filter box is fixed to the outer wall of the main body.

[0013] In some embodiments, the air inlet and the air outlet are located on different sides of the impeller, wherein the air inlet is closer to the wheel than the air outlet.

[0014] In some embodiments, the turbine housing includes a first housing portion and a second housing portion, wherein the first housing portion faces the traveling wheel and the second housing portion faces away from the traveling wheel. The first housing portion and the second housing portion are joined together to form the sealing cavity. The first housing portion is provided with a through hole, and a bearing is fixedly disposed in the through hole. The connecting shaft passes through the bearing and enters the sealing cavity to connect to the impeller.

[0015] In some embodiments, the air inlet is located in the first housing portion, and the air outlet is located in the second housing portion.

[0016] In some embodiments, the end of the first duct away from the air inlet is aligned with the area where the wheel contacts the ground.

[0017] In some embodiments, the second conduit is a retractable and adjustable conduit.

[0018] In some embodiments, the first conduit is a non-stretchable rigid pipe.

[0019] In some embodiments, the mobile device is provided with a plurality of the walking wheels, wherein the two forward-facing walking wheels are respectively equipped with corresponding dust collection components. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a mobile device according to an embodiment of this application.

[0021] Figure 2 This is a partial schematic diagram of a mobile device according to an embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the vacuuming component of a mobile device according to an embodiment of this application.

[0023] Explanation of key component symbols:

[0024] Mobile device 100, main body 10, wheels 20, vacuuming assembly 30, turbine fan 31

[0025] Turbine housing 311, connecting shaft 50, connecting bracket 60, first pipe 32, second pipe 33.

[0026] Filter box 34, first housing part 301, second housing part 302, base 340, multi-stage filter structure 341.

[0027] Air inlet 342, exhaust outlet 343. Detailed Implementation

[0028] To better understand the purpose, features, and advantages of this application, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. For clarity, the various parts in the drawings are not drawn to scale. Furthermore, some well-known parts may not be shown in the drawings.

[0029] The mobile device in this application embodiment does not require external power or an additional power source. It relies solely on the movement of the wheels to drive the turbine and generate a vacuum negative pressure, thereby effectively achieving dust suction on the contact surface between the wheels and the track.

[0030] Please see Figure 1The mobile device 100 of this application embodiment includes a main body 10 and a plurality of wheels 20 rotatably disposed on one side of the main body 10. The wheels 20 are disposed on the bottom side of the main body 10 to support and rotate the main body 10, thereby moving the main body 10. The main body 10 can be used to load items. In this application embodiment, the mobile device 100 can be a device for loading and transporting materials used in a cleanroom, or a device for loading and transporting materials with high cleanliness requirements used in a non-cleanroom environment. In this application embodiment, the mobile device 100 can be a trolley used in a cleanroom. In some embodiments, the mobile device 100 can be configured with a track, and the wheels 20 rotate in the track, thereby moving the mobile device 100 along the track.

[0031] like Figure 1 As shown, the mobile device 100 is also equipped with a dust-collecting assembly 30 to vacuum the contact area between the wheels 20 and the ground, thus effectively preventing dust from accumulating on the mobile device 100 when the wheels 20 are in contact with the ground. The dust-collecting assembly 30 is located on the exterior of the main body 10. (See reference...) Figure 2 and Figure 3 The dust collection assembly 30 includes a turbine fan 31. The turbine fan 31 (also known as a centrifugal fan) is a device that converts mechanical energy into gas kinetic energy and pressure energy through the high-speed rotation of an impeller. The turbine fan 31 includes a turbine housing 311 and an impeller (not shown) disposed inside the turbine housing 311. A sealed cavity (not shown) is formed inside the turbine housing 311, and the impeller is rotatably disposed within the sealed cavity. In this embodiment, the impeller includes backward-curved blades to achieve a dust collection effect.

[0032] The mobile device 100 in this embodiment is not equipped with a turbine fan 31 that drives the vacuuming assembly 30 with electricity or an additional power source, such as Figure 1 As shown, the moving device 100 also includes a connecting shaft 50, one end of which is connected to the axle of the traveling wheel 20, and the other end is connected to the impeller, so that when the traveling wheel 20 rotates, it drives the impeller of the turbine fan 31 to rotate in the sealed cavity. The axle is an important component of the traveling wheel 20, and refers to the rigid shaft that passes through the center of the traveling wheel 20 and supports the rotation of the traveling wheel 20.

[0033] like Figure 2 and Figure 3 As shown, the dust collection assembly 30 also includes a first pipe 32 and a second pipe 33 connecting the turbine fan 31, as well as a filter box 34. The sealed cavity has an air inlet (not shown) and an air outlet (not shown), with the air inlet closer to the wheel 20 than the air outlet. In some embodiments, the air inlet and air outlet are located on different sides of the impeller.

[0034] An air inlet is connected to a first pipe 32. The first pipe 32 has two opposing ends, one end of which is connected to the air inlet, and the other end is positioned opposite the wheel 20. That is, the end of the first pipe 32 furthest from the air inlet is aligned with the wheel 20. The air inlet is used to create negative pressure to draw in air, so that gas can enter the turbine fan 31 from the first pipe 32 and the air inlet. An air outlet is connected to a second pipe 33. The second pipe 33 has two opposing ends, one end of which is connected to the air outlet, and the other end is connected to the filter box 34. In this way, the gas entering the turbine fan 31 can leave the turbine fan 31 through the air outlet and the second pipe 33, and then enter the filter box 34, which is used to remove dust and other solid impurities from the gas flow.

[0035] Thus, the traveling wheel 20 rotates at high speed on the track, driving the impeller of the turbine fan 31 to rotate at high speed through the connecting shaft 50. The rotation of the impeller creates a local negative pressure vacuum state at the air inlet, and air is drawn into the sealed cavity from the air inlet and accelerated. In this way, external dust and other impurities can be drawn into the sealed cavity through the first pipe 32 and the air inlet, and then discharged from the air outlet of the sealed cavity through the rotation of the impeller into the second pipe 33, and finally into the filter box 34. Dust and other impurities are intercepted in the filter box 34, while the gas is discharged from the exhaust port of the filter box 34.

[0036] like Figure 2 As shown, the mobile device 100 also includes a connecting bracket 60, which protrudes from the outside of the main body 10. The turbine housing 311 is fixedly connected to the main body 10 via the connecting bracket 60. The connecting bracket 60 is fixedly connected to the main body 10, and the turbine housing 311 is fixedly mounted on the connecting bracket 60. In some embodiments, the filter box 34 may also be fixed to the outer wall of the main body 10.

[0037] In this embodiment, the turbine housing 311 includes a first housing portion 301 and a second housing portion 302, wherein the first housing portion 301 faces the traveling wheel 20, and the second housing portion 302 faces away from the traveling wheel 20. The first housing portion 301 and the second housing portion 302 are joined to form a sealed cavity. The first housing portion 301 is provided with a through hole (not shown), through which the connecting shaft 50 enters the sealed cavity. A bearing (not shown) is fixedly installed in the through hole. That is, the bearing passes through the first housing portion 301, and the connecting shaft 50 passes through the bearing to enter the sealed cavity to connect to the impeller. The connecting shaft 50 rotates in the bearing, so that the connecting shaft 50 can rotate in the bearing without being affected by passing through the first housing portion 301. The bearing can be a ball bearing.

[0038] The filter box 34 has a structure conventionally used in the art. In some embodiments, the filter box 34 includes a base 340 and a multi-stage filter structure 341 disposed on the base 340. The base 340 acts as a support for the filter box 34, and important components of the filter box 34, such as the multi-stage filter structure 341, are disposed on the base 340. Furthermore, the filter box 34 is provided with an air inlet 342 and an exhaust outlet 343, located on opposite sides of the filter box 34. Airflow enters the filter box 34 through the air inlet 342, is filtered by the multi-stage filter structure 341 to remove dust and impurities, and then the gas is discharged from the exhaust outlet 343. When the filter box 34 is disposed on the main body 10 of the mobile device 100, the base 340 can be disposed on the main body 10.

[0039] In some embodiments, the second pipe 33 is a telescopic and adjustable pipe to facilitate adjustment of its length and position, thereby adjusting the position of the filter box 34. In some embodiments, the first pipe 32 is a non-telescopic rigid pipe.

[0040] In some embodiments, the mobile device is provided with multiple wheels 20, and at least one wheel 20 is correspondingly equipped with a vacuuming component 30 for vacuuming. In this embodiment, the mobile device is provided with four wheels 20. In some embodiments, each of the two wheels 20 located at the front of the mobile device is respectively equipped with a corresponding vacuuming component 30.

[0041] Thus, the mobile device 100 of this embodiment has a highly efficient cleaning capability, capable of deep cleaning dust from the contact surfaces of the wheels 20 and the track. The mobile device 100 requires no external power supply or additional power source, relying solely on the kinetic energy of the wheels 20 themselves to achieve the dust-collecting function, effectively reducing operating costs and minimizing energy dependence and consumption. Furthermore, the synchronous rotation of the turbine fan 31 and the wheels 20 ensures timely cleaning of generated dust, preventing dust from drifting onto the mobile device 100 and causing damage.

[0042] The following is a specific example of the mobile device 100, which calculates the particle size of dust that the vacuuming component 30 can adsorb.

[0043] The maximum speed of the mobile device 100 (cart) is 210 m / min, and the diameter of the traveling wheel 20 is 0.43 m. The calculated rotational speed of the traveling wheel 20 is: 210 ÷ (3.14 × 0.43) ≈ 155 r / min.

[0044] The impeller blades have a diameter of 0.4 meters and a rotational speed of 155 revolutions per minute. According to the formula for circumferential speed, v = πdn, where v is the circumferential speed, d is the diameter, and n is the rotational speed, we can obtain the circumferential speed v = 3.14 × 0.4 × 155 ÷ 60 ≈ 3.22 meters per second.

[0045] Estimating wind speed: Wind speed is related to factors such as the shape, spacing, installation angle, and air duct of the impeller blades. Generally, the wind speed is about 0.5-0.8 times the circumferential speed of the blades. Taking the middle value of 0.65, the wind speed is approximately 3.22 × 0.65 = 2.09 meters per second.

[0046] The design inlet diameter is 0.05m, and the outlet diameter is 0.2m. According to Q=Sv, where S is the area, v is the wind speed, and Q... 进 =Q 出 That is, 3.14 × 0.025 2 ×v = 3.14 × 0.1 2 ×2.09, the wind speed v at the air inlet can be calculated to be 33.44 m / s.

[0047] The suction force can be approximated by calculating the dynamic pressure using Bernoulli's equation. For incompressible fluids, according to Bernoulli's equation, neglecting changes in gravitational potential energy (in the case of a horizontal pipe), the dynamic pressure pd = 1 / 2pv². This dynamic pressure can be approximated as the suction force of the pipe. The air density P is approximately 1.29 kg / m³, and the wind speed v = 33.44 m / s. Therefore, ρ = 1.29 kg / m³. 3 Substituting v = 33.44 m / s into the dynamic pressure formula, we get: pd = 1 / 2 × 1.29 × 33.44 2 ≈724.7Pa. Therefore, for a duct with an inlet air velocity of 33.44m / s, the suction force is approximately 724.7Pa.

[0048] The following analysis will examine the relationship between the suction power of the vacuum assembly 30 and the objects it can pick up. The suction power (pressure difference) of the vacuum assembly 30 must overcome the gravity of the dust particles to lift them. The dust is lifted when the upward force generated by the suction equals the gravity of the dust particles.

[0049] According to the formula F=PS, where F is force, P is pressure, and S is the area of ​​contact, the upward force on the dust particle is F=724S, and the weight of the dust particle is G=mg=pVg=p(4 / 3)πr. 3 g, where for spherical dust particles, V is the volume, P is the dust density, and r is the radius.

[0050] Taking polyethylene (PE) dust as an example, the density of PE dust varies due to various factors. The density of pure PE is generally between 0.91 and 0.96 g / cm³, taking the middle value of 0.94 g / cm³, F=G, that is, 724S=p(4 / 3)πr 3 g.

[0051] For spherical dust particles, S=πr 2 Substituting into the above formula, we get r = 4 × 940 × 9.8 ~ 0.006m = 6mm. Therefore, under ideal conditions, a vacuum cleaner with 724Pa can pick up spherical PE dust with a density of 0.94 g / cm³ and a radius of approximately 6mm. That is, the moving device is designed with a turbine to create a negative pressure of approximately 724.7Pa, which can adsorb PE dust with a diameter of approximately 6mm and below into the filter box 34.

[0052] The mobile device 100 of this application is connected to the traveling wheels 20 via a connecting shaft 50 through a turbine fan 31. The power generated by the high-speed rotation of the traveling wheels 20 on the track is transmitted to the turbine fan 31, causing the impeller of the turbine fan 31 to rotate as well, creating negative pressure. This negative pressure is then transmitted to the contact surface between the traveling wheels 20 and the track, thereby achieving a dust-collecting effect. Thus, the mobile device 100 not only collects dust but also saves energy.

[0053] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A mobile device, characterized in that, include: Main body; The traveling wheels are rotatably mounted on one side of the main body; A dust collection assembly includes a turbine fan, a first pipe and a second pipe connecting the turbine fan, and a filter box. The turbine fan includes a turbine housing and an impeller. The turbine housing has a sealed cavity, and the impeller is rotatably disposed within the sealed cavity. The sealed cavity has an air inlet and an air outlet. The air inlet is connected to the first pipe, and the air outlet is connected to the filter box via the second pipe. A connecting shaft is provided, with one end connected to the axle of the traveling wheel and the other end connected to the impeller, so that the traveling wheel rotates and drives the impeller to rotate.

2. The mobile device according to claim 1, characterized in that, The mobile device also includes a connecting bracket, which is fixedly connected to the main body, and the turbine housing is fixedly mounted on the connecting bracket.

3. The mobile device according to claim 1, characterized in that, The filter box is fixed to the outer wall of the main body.

4. The mobile device according to claim 1, characterized in that, The air inlet and the air outlet are located on different sides of the impeller, wherein the air inlet is closer to the traveling wheel than the air outlet.

5. The mobile device according to claim 1, characterized in that, The turbine housing includes a first housing portion and a second housing portion, wherein the first housing portion faces the traveling wheel and the second housing portion faces away from the traveling wheel. The first housing portion and the second housing portion are joined together to form the sealing cavity. The first housing portion is provided with a through hole, and a bearing is fixedly installed in the through hole. The connecting shaft passes through the bearing and enters the sealing cavity to connect to the impeller.

6. The mobile device according to claim 5, characterized in that, The air inlet is located in the first housing portion, and the air outlet is located in the second housing portion.

7. The mobile device according to claim 1, characterized in that, The end of the first pipe away from the air inlet is aligned with the area where the wheel contacts the ground.

8. The mobile device according to claim 1, characterized in that, The second pipe is an adjustable pipe.

9. The mobile device according to claim 1, characterized in that, The first pipe is a non-expandable rigid pipe.

10. The mobile device according to claim 1, characterized in that, The mobile device is equipped with multiple wheels, with the two forward-facing wheels each equipped with a corresponding dust collection component.

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