High-power wet and dry ground washing dust collection fan

Abstract

According to the high-power wet and dry dual-purpose floor washing dust collection fan, a dipolar wind guide wheel is designed on the outer side of the front end of the front end cover of the dust collection fan to guide dust collection wind from the side face, a gasket sealing convex edge is embedded into a sealing groove to seal and isolate a stator and rotor assembly, and the waterproofness of the fan is improved; therefore, the dust collection fan can be completely suitable for wet and dry dual-purpose use; besides, the center of the rear end cover is provided with cooling fan blades, the rear end cover is provided with a corresponding cooling air guide wheel, the center of the PCB is provided with a corresponding cooling air inlet, the side edge of the cooling air inlet is provided with at least one hot air outlet, and the PCB cover is correspondingly provided with a corresponding through hole, so that a cooling air duct system which blows cooling air to the stator and rotor assembly and discharges hot air through the hot air outlet is formed. And the dust collection fan is effectively cooled and radiated.

Description

Technical Field

[0001] This utility model relates to the field of vacuum cleaner technology, and in particular to a high-power dry and wet dual-purpose floor cleaning vacuum cleaner. Background Technology

[0002] Most wet and dry floor cleaning vacuums on the market currently use a method where internal heat is drawn out through the suction blades and then dissipated through the air duct structure of the suction blades. This reduces suction performance and motor waterproofing because it requires cutting into the air inlet of the fan. Therefore, further improvements to the structure of vacuum cleaner fans are needed. Utility Model Content

[0003] In view of this, the present invention provides a high-power dry and wet dual-purpose floor cleaning and vacuuming fan, which addresses the problems of the existing technology by designing an isolation and sealing structure and a rear cooling air duct system to solve the existing technical problems.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A high-power wet and dry dual-purpose floor scrubbing and vacuuming fan includes:

[0006] The front cover is closed at the front end and has a front bearing chamber at the center of the front end, an opening at the rear end, and a device receiving cavity formed on the inner side. An outer stator assembly is fixedly installed in the device receiving cavity.

[0007] The rear end cover is fixedly installed on the rear end opening of the front end cover, and a rear bearing chamber is provided therein;

[0008] The inner rotor assembly passes through the outer stator assembly and is rotatably mounted in the front bearing chamber and the rear bearing chamber via two bearings, with its shaft protruding from the front bearing chamber and the rear bearing chamber respectively.

[0009] The suction fan blade is fixedly mounted at the front end of the rotating shaft;

[0010] The PCB board is located behind the rear end cover and is electrically connected to the outer stator assembly via wires.

[0011] A two-stage guide vane is provided on the outer side of the front end of the front end cover. A first-stage guide vane corresponding to the two-stage guide vane is fixedly provided on the front end face of the front end cover. A rotating shaft hole is provided in the center of the front bearing chamber. A sealing groove is provided on the outer ring of the rotating shaft hole. The dust suction fan blade pressing gasket is fixedly provided at the front end of the rotating shaft and the gasket presses on the outer ring of the rotating shaft hole. A sealing protrusion is provided at the bottom of the gasket and is embedded in the sealing groove. A fan blade cover is provided on the outer side of the two-stage guide vane to cover the front end of the front end cover. A fan blade cover air inlet corresponding to the center air inlet of the dust suction fan blade is provided in the center of the fan blade cover.

[0012] Furthermore, a grease layer is provided in the sealing groove, and the sealing flange presses against the grease layer and is embedded in the sealing groove.

[0013] Furthermore, an annular sealing cotton is provided between the air inlet of the fan blade cover and the central air inlet of the dust suction fan blade.

[0014] Furthermore, a cooling fan wheel is provided on the outer ring of the rear bearing chamber of the rear end cover. A cooling fan blade is fixed to the rear end of the rotating shaft on the rear side of the cooling fan wheel. A cooling air inlet corresponding to the cooling fan blade is provided at the center of the PCB board. At least one hot air outlet is provided on the side of the cooling air inlet of the PCB board.

[0015] Furthermore, a PCB cover is provided on the outer side of the PCB board. The PCB cover is set on the front cover and covers the PCB board. The center of the PCB cover is provided with a PCB cover air inlet corresponding to the cooling air inlet. The side of the PCB cover air inlet is provided with a PCB cover air outlet corresponding to the hot air outlet.

[0016] Furthermore, a thermally conductive silicone grease layer is provided between the PCB cover and the PCB board.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention features a two-stage guide wheel on the outer side of the front end of the vacuum cleaner's front cover to guide the suction air from the side. A gasket seals the stator and rotor assembly by embedding a sealing groove into the gasket, improving the fan's waterproofness and making it suitable for both wet and dry use. Furthermore, a cooling fan blade is located at the center of the rear end cover, along with a corresponding cooling guide wheel. A cooling air inlet is located at the center of the PCB board, and at least one hot air outlet is located on the side of the cooling air inlet. Corresponding through holes are also provided on the PCB cover, forming a cooling air duct system that blows cooling air towards the stator and rotor assembly and then discharges hot air through the hot air outlet, effectively cooling and dissipating heat from the vacuum cleaner. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the high-power wet and dry dual-purpose floor scrubbing and vacuuming fan of this utility model;

[0020] Figure 2 This is a schematic diagram showing the disassembled high-power wet and dry dual-purpose floor scrubbing and vacuuming fan of this utility model;

[0021] Figure 3 This is a schematic diagram of the front end cover in this utility model;

[0022] Figure 4 This is a schematic diagram of the gasket in this utility model;

[0023] Figure 5 This is a schematic diagram of the rear end cover of this utility model.

[0024] The annotations in the attached figures are explained as follows:

[0025] Front cover 10, front bearing chamber 11, shaft hole 111, sealing groove 112, rear opening 12, device receiving cavity 13, two-stage guide vane 14, outer stator assembly 20, rear cover 30, rear bearing chamber 31, cooling guide vane 32, inner rotor assembly 40, bearing 41, shaft 42, dust suction fan 50, center air inlet 51, PCB board 60, cooling air inlet 61, hot air outlet 62, first-stage guide vane 70, gasket 80, sealing flange 81, fan blade cover 90, fan blade cover air inlet 91, annular sealing cotton 100, cooling fan blade 110, PCB cover 120, PCB cover air inlet 121, PCB cover air outlet 122. Detailed Implementation

[0026] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0027] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0028] To improve waterproof performance and heat dissipation efficiency, the specific details of this utility model are as follows.

[0029] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an embodiment of this utility model is a high-power wet and dry dual-purpose floor scrubbing and vacuuming fan, including a front cover 10, an outer stator assembly 20, a rear cover 30, an inner rotor assembly 40, a vacuuming fan blade 50, and a PCB board 60.

[0030] The front end cover 10 is closed at the front end and has a front bearing chamber 11, a rear end opening 12, and a device receiving cavity 13 formed on the inner side. An outer stator assembly 20 is fixedly installed in the device receiving cavity 13. The outer stator assembly 20 is usually composed of a stator core and a coil winding. It can be an injection-molded stator core with a coil winding wound on it.

[0031] The rear end cover 30 is fixedly mounted on the rear end opening 12 of the front end cover 10, and a rear bearing chamber 31 is provided therein.

[0032] The inner rotor assembly 40 passes through the outer stator assembly 20 and is rotatably mounted in the front bearing chamber 11 and the rear bearing chamber 31 via two bearings 41. Its rotating shaft 42 extends out of the front bearing chamber 11 and the rear bearing chamber 31 at both ends, respectively. A magnetic ring assembly is set in the middle of the rotating shaft 42. The magnetic ring assembly is located in the central cavity of the stator core and coil winding of the outer stator assembly 20. The magnetic ring assembly induces a magnetic field to provide rotational force.

[0033] The suction fan blade 50 is fixedly installed at the front end of the rotating shaft 42;

[0034] PCB board 60 is located on the rear side of rear end cover 30 and is electrically connected to outer stator assembly 20 via wires;

[0035] Importantly, a secondary guide wheel 14 is provided on the outer side of the front end of the front end cover 10, and a primary guide wheel 70 corresponding to the secondary guide wheel 14 is fixedly provided on the front end face of the front end cover 10. Preferably, the primary guide wheel 70 is riveted to the front end face of the front end cover 10 after being glued. The secondary guide wheel 14 is guided by 13 forward-facing blades, and the primary guide wheel 70 is provided with corresponding oblique guide blades to guide the suction air from the side.

[0036] A pivot hole 111 is provided in the center of the front bearing chamber 11, and a sealing groove 112 is provided on the outer ring of the pivot hole 111. The dust suction fan 50 presses against the gasket 80 and is fixedly installed at the front end of the pivot shaft 42, and the gasket 80 presses against the outer ring of the pivot hole 111. A sealing protrusion 81 is provided at the bottom of the gasket 80 and is embedded in the sealing groove 112. A fan blade cover 90 covering the front end of the front end cover 10 is provided on the outer side of the two-stage guide vane 14. A fan blade cover air inlet 91 corresponding to the central air inlet 51 of the dust suction fan 50 is provided in the center of the fan blade cover 90.

[0037] The main feature of this invention is that a two-stage guide wheel 14 is designed on the outer side of the front end of the front cover 10 of the vacuum blower to guide the vacuuming air from the side. The stator and rotor assembly is sealed and isolated by the gasket 80 sealing flange 81 embedded in the sealing groove 112, thereby improving the waterproof performance of the blower and making the vacuum blower suitable for both dry and wet use.

[0038] Furthermore, in some embodiments, in order to further improve the waterproofness of the fan, a grease layer is provided in the sealing groove 112. After the sealing protrusion 81 presses against the grease layer, it is embedded in the sealing groove 112. The airtightness of the grease can better improve the waterproofness of the fan.

[0039] Furthermore, in some embodiments, such as Figure 2As shown, in order to improve the airtightness of the dust collection air intake, an annular sealing cotton 100 is also provided between the air inlet 91 of the fan hood and the central air inlet 51 of the dust collection fan blade 50. The annular sealing cotton 100 can effectively improve the airtightness between the air inlet 91 of the fan hood and the central air inlet 51, and the dust collection fan blade 50 can draw in air better.

[0040] Furthermore, in some embodiments, such as Figure 2 , Figure 5 As shown, in order to improve the cooling and heat dissipation performance of the vacuum cleaner fan, a cooling guide wheel 32 is also provided on the outer ring of the rear bearing chamber 31 of the rear end cover 30. A cooling fan blade 110 fixed to the rear end of the rotating shaft 42 is provided on the rear side of the cooling guide wheel 32. A cooling air inlet 61 corresponding to the cooling fan blade 110 is provided at the center of the PCB board 60. At least one hot air outlet 62 is provided on the side of the cooling air inlet 61 of the PCB board 60. Preferably, there are three hot air outlets 62 evenly distributed to allow for good hot air flow.

[0041] With this design, a cooling fan blade 110 is set in the center of the rear end cover 30, a corresponding cooling guide wheel 32 is set in the rear end cover 30, a corresponding cooling air inlet 61 is set in the center of the PCB board 60, and at least one hot air outlet 62 is set on the side of the cooling air inlet 61, forming a cooling air duct system that blows cooling air to the stator and rotor assembly and then discharges hot air through the hot air outlet 62, effectively cooling and dissipating heat for the vacuum cleaner fan.

[0042] Furthermore, in some embodiments, such as Figure 1 and Figure 2 As shown, in order to better protect the PCB board 60 and isolate the suction air, a PCB cover 120 is provided on the outside of the PCB board 60. The PCB cover 120 is set on the rear opening 12 of the front cover 10 to cover the PCB board 60. The center of the PCB cover 120 is provided with a PCB cover air inlet 121 corresponding to the cooling air inlet 61. The side of the PCB cover air inlet 121 is provided with a PCB cover air outlet 122 corresponding to the hot air outlet 62. After the vacuum cleaner is installed in the vacuum cleaner, a separate air duct is set on the rear side of the PCB cover 120 to isolate it from the suction air. Alternatively, a dedicated silicone channel can be installed on the PCB cover 120 and combined with the vacuum cleaner shell to set up an independent air inlet duct to isolate it from the suction air.

[0043] Furthermore, in some embodiments, in order to better dissipate heat from the vacuum cleaner fan, a thermally conductive silicone grease layer is provided between the PCB cover 120 and the PCB board 60. The PCB cover 120 can directly conduct heat from the PCB board 60 through the thermally conductive silicone grease layer, thereby better dissipating heat from the PCB board 60.

[0044] The above description is merely illustrative of the embodiments of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model without creative labor should be included within the protection scope of this utility model.

Claims

1. A high-power wet and dry dual-purpose floor scrubbing and vacuuming fan, comprising: The front end cover (10) is closed at the front end and has a front bearing chamber (11) at the center of the front end, a rear end opening (12) and a device receiving cavity (13) formed on the inner side. An outer stator assembly (20) is fixedly installed in the device receiving cavity (13). The rear end cover (30) is fixedly installed on the rear end opening (12) of the front end cover (10), and a rear bearing chamber (31) is provided therein; The inner rotor assembly (40) passes through the outer stator assembly (20) and is rotatably disposed in the front bearing chamber (11) and the rear bearing chamber (31) via two bearings (41). The two ends of its rotating shaft (42) protrude from the front bearing chamber (11) and the rear bearing chamber (31) respectively. The dust extraction fan blade (50) is fixedly installed at the front end of the rotating shaft (42); PCB board (60), which is located behind the rear end cover (30) and electrically connected to the outer stator assembly (20) via wires; The invention is characterized in that a two-stage guide wheel (14) is provided on the outer side of the front end of the front end cover (10), a first-stage guide wheel (70) corresponding to the two-stage guide wheel (14) is fixedly provided on the front end face of the front end cover (10), a rotating shaft hole (111) is provided in the center of the front bearing chamber (11), a sealing groove (112) is provided on the outer ring of the rotating shaft hole (111), the dust suction fan blade (50) presses against the gasket (80) and is fixedly provided on the front end of the rotating shaft (42) and the gasket (80) presses against the outer ring of the rotating shaft hole (111), a sealing convex edge (81) is provided at the bottom of the gasket (80) and is embedded in the sealing groove (112), a fan blade cover (90) covering the front end of the front end cover (10) is provided on the outer side of the two-stage guide wheel (14), and a fan blade cover air inlet (91) corresponding to the central air inlet (51) of the dust suction fan blade (50) is provided in the center of the fan blade cover (90).

2. The high-power wet and dry dual-purpose floor scrubbing and vacuuming fan according to claim 1, characterized in that: A grease layer is provided in the sealing groove (112), and the sealing protrusion (81) presses against the grease layer and is embedded in the sealing groove (112).

3. The high-power wet and dry dual-purpose floor scrubbing and vacuuming fan according to claim 1, characterized in that: An annular sealing cotton (100) is also provided between the air inlet (91) of the fan blade cover and the central air inlet (51) of the dust suction fan blade (50).

4. The high-power wet and dry dual-purpose floor scrubbing and vacuuming fan according to claim 1, characterized in that: The rear bearing chamber (31) of the rear end cover (30) is also provided with a cooling fan wheel (32) on the outer ring. The cooling fan wheel (32) is provided with a cooling fan blade (110) fixed to the rear end of the rotating shaft (42) on the rear side. The PCB board (60) is provided with a cooling air inlet (61) corresponding to the cooling fan blade (110) at the center. The PCB board (60) is provided with at least one hot air outlet (62) on the side of the cooling air inlet (61).

5. The high-power wet and dry dual-purpose floor scrubbing and vacuuming fan according to claim 4, characterized in that: A PCB cover (120) is provided on the outside of the PCB board (60). The PCB cover (120) is set on the rear opening (12) of the front cover (10) to cover the PCB board (60). A PCB cover air inlet (121) corresponding to the cooling air inlet (61) is provided in the center of the PCB cover (120). A PCB cover air outlet (122) corresponding to the hot air outlet (62) is provided on the side of the PCB cover air inlet (121).

6. The high-power wet and dry dual-purpose floor scrubbing and vacuuming fan according to claim 5, characterized in that: A thermally conductive silicone grease layer is provided between the PCB cover (120) and the PCB board (60).

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