Structure for preventing water from entering vacuum dust collection fan on floor cleaning appliance and floor washing machine thereof

Abstract

A structure for preventing water from entering a vacuum dust collection fan on a floor cleaning appliance comprises the vacuum dust collection fan and a sewage tank combination. The sewage tank combination comprises a sewage tank sewage garbage inlet through which sewage garbage enters the sewage tank; the sewage tank combination comprises an air outlet communicated with an air inlet of the vacuum dust collection fan; an air inlet of the vacuum dust collection fan is provided with a heat dissipation channel; a one-way outward drainage device is arranged between a sewage and garbage inlet of the sewage tank of the sewage tank combination and an air inlet of the vacuum dust collection fan; and the one-way outward drainage device is arranged on a channel through which liquid enters the air inlet of the vacuum dust collection fan from the sewage tank. Water possibly flowing into the heat dissipation channel of the vacuum dust collection fan is timely discharged to the outside through the one-way outward drainage device when passing through the one-way outward drainage device, so that the vacuum dust collection fan is prevented from being damaged due to the fact that water enters the heat dissipation channel to the maximum extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of for ground cleaning appliance on prevent dust fan water inlet structure. BACKGROUND

[0002] At present, the sewage tank and vacuum dust fan of cleaning appliance on market are mostly located on machine body, the cavity of sewage tank is communicated with the suction inlet of vacuum dust fan, vacuum dust fan generally has heat dissipation channel, one end of heat dissipation channel is communicated with the circuit board combination of vacuum dust fan, the other end is usually arranged in the air inlet position of vacuum dust fan, when vacuum dust works normally, heat dissipation channel inhales air from outside, passes through circuit board combination inside vacuum dust fan to dissipate heat, and then enters the suction inlet of vacuum dust fan from heat dissipation channel, and then is discharged from vacuum dust fan, to achieve the effect of dissipating heat inside vacuum dust fan, under the action of negative pressure, when water passes through the suction inlet of vacuum dust fan and enters vacuum dust fan, water cannot enter the heat dissipation hole of vacuum dust fan, but when vacuum dust fan stops working, the water in sewage tank will have a certain probability to pour into vacuum dust fan when cleaning appliance machine body lies down, and enter heat dissipation channel of vacuum dust fan, causing circuit board combination or bearing of vacuum dust fan to be damaged, especially the bearing of vacuum dust fan is rusted, which directly leads to cleaning appliance cannot continue to work.

[0003] Therefore, a structure capable of avoiding that water in sewage tank pours into vacuum dust fan when vacuum dust fan stops working is an urgent problem to be solved in the industry. SUMMARY

[0004] A kind of on ground cleaning appliance prevents vacuum dust fan water inlet structure, including vacuum dust fan, sewage tank combination.

[0005] The sewage tank combination includes sewage tank sewage garbage inlet, which allows sewage garbage to enter the inside of the sewage tank.

[0006] The sewage tank combination includes an air outlet that is connected to the air inlet of the vacuum dust fan.

[0007] The air inlet of the vacuum dust fan is provided with a heat dissipation channel.

[0008] The sewage tank sewage garbage inlet of the sewage tank combination and the air inlet of the vacuum dust fan are provided with a one-way outward drainage device.

[0009] The one-way outward drainage device is arranged on the channel that the liquid must pass through when entering the air inlet of the vacuum dust fan from the sewage tank.

[0010] The one-way outward drainage device on the necessary channel can discharge the liquid passing through the one-way outward drainage device from the inside to the outside of the necessary channel when the vacuum cleaner fan stops working.

[0011] The one-way outward drainage device will not discharge the liquid passing through the one-way outward drainage device from the inside to the outside under the action of negative pressure when the vacuum cleaner fan is working.

[0012] The sewage tank combination is provided with a garbage collection limiting device; the garbage collection limiting device can also be an alarm device realized by mechanical or electronic structure.

[0013] The sewage tank combination is provided with a garbage collection limiting device; the garbage collection limiting device can also be an alarm device realized by mechanical or electronic structure.

[0014] The sewage tank combination is provided with a garbage collection limiting device; the garbage collection limiting device can also be an alarm device realized by mechanical or electronic structure.

[0015] The sewage tank combination is provided with a garbage collection limiting device; the garbage collection limiting device can also be an alarm device realized by mechanical or electronic structure.

[0016] The sewage tank combination is provided with a garbage collection limiting device; the garbage collection limiting device can also be an alarm device realized by mechanical or electronic structure.

[0017] The sewage tank combination is provided with a garbage collection limiting device; the garbage collection limiting device can also be an alarm device realized by mechanical or electronic structure.

[0018] The sewage tank combination is provided with a garbage collection limiting device; the garbage collection limiting device can also be an alarm device realized by mechanical or electronic structure.

[0019] The sewage tank combination is provided with a garbage collection limiting device; the garbage collection limiting device can also be an alarm device realized by mechanical or electronic structure.

[0020] Function description:

[0021] When the vacuum cleaner fan works, the vacuum cleaner fan inlet draws air from the sewage tank, forming a negative pressure vacuum in the sewage tank, and the sewage tank sewage garbage inlet forms a negative pressure to suck in solid or liquid waste from the outside. Due to the formation of negative pressure in the sewage tank, the one-way outward drainage device is closed under the influence of external pressure, so that the garbage in the sewage tank will not be discharged to the outside of the sewage tank. When the vacuum cleaner fan stops working, the pressure in the sewage tank is equal to the outside, and no solid or liquid waste is sucked from the outside. When the height of the garbage exceeds the one-way outward drainage device, the one-way outward drainage device valve opens, and the sewage exceeding the one-way outward drainage device will be discharged to the outside of the sewage tank combination.

[0022] The sewage tank assembly comprises a one-way water drainage structure from the inside of the sewage tank to the outside, which is located before the air inlet of the vacuum cleaner fan, and the one-way valve closes the one-way water drainage structure when the vacuum cleaner fan is working, and the one-way water drainage structure is opened when the vacuum cleaner fan is not working, so that water flows out of the one-way water drainage structure to the outside of the sewage tank, thereby preventing sewage from entering the vacuum cleaner fan and damaging the vacuum cleaner fan.

[0023] When the dust suction fan stops working, the sewage is discharged before entering the heat dissipation channel of the dust suction fan,

[0024] The sewage is prevented from entering the heat dissipation channel of the dust suction fan, so that the dust suction fan is protected.

[0025] A floor cleaning machine comprises a hand-held part, a cleaning head and a main body assembly.

[0026] The main body assembly comprises a water-proof structure for the vacuum cleaner fan.

[0027] The one-way outward water drainage device timely discharges water in the heat dissipation channel of the vacuum cleaner fan to the outside when the water flows through the one-way outward water drainage device, so that the vacuum cleaner fan is prevented from being damaged due to water entering the heat dissipation channel. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A sectional view of the water-proof structure for the vacuum cleaner fan is shown in the utility model.

[0029] Figure 2 A 3D assembly view of the sewage tank assembly of the water-proof structure for the vacuum cleaner fan is shown in the utility model.

[0030] Figure 3 A 3D exploded view of the sewage tank assembly of the water-proof structure for the vacuum cleaner fan is shown in the utility model.

[0031] Figure 4 A 3D view of the upper cover of the sewage tank of the water-proof structure for the vacuum cleaner fan is shown in the utility model.

[0032] Figure 5 A 3D view of the opening of the one-way outward water drainage device of the water-proof structure for the vacuum cleaner fan is shown in the utility model.

[0033] Figure 6 A schematic view of the water-proof structure for the vacuum cleaner fan is shown in the utility model.

[0034] Figure 7 A 3D view of a floor cleaning machine using the water-proof structure for the vacuum cleaner fan is shown in the utility model.

[0035] Figure 8A 3D bottom part schematic view of a floor cleaning machine with the water-preventing structure for the vacuum cleaner fan;

[0036] Figure 9 A 3D bottom part local section schematic view of a floor cleaning machine with the water-preventing structure for the vacuum cleaner fan;

[0037] Figure 10 A 3D handle schematic view of a floor cleaning machine with the water-preventing structure for the vacuum cleaner fan. DETAILED DESCRIPTION

[0038] As shown in Figure 1 , 2 , the water-preventing structure for the vacuum cleaner fan comprises a main body 1, a vacuum cleaner fan 2, and a sewage tank combination 3.

[0039] As shown in Figure 2 , the main body 1 comprises a front shell 11 and a rear shell 12.

[0040] As shown in Figure 1 , the main body 1 is provided with a battery pack 5.

[0041] As shown in Figure 1 , 2 , the main body 1 is provided with the sewage tank combination 3 which is detachably embedded in the main body 1.

[0042] As shown in Figure 1 , 2 , 3, the sewage tank combination 3 comprises a sewage tank upper cover 31, a sewage tank bottom shell 32, and a one-way outward water drainage device 33.

[0043] As shown in Figure 1 , the sewage tank upper cover 31 is provided with a sewage tank garbage limiting detection device 315.

[0044] As shown in Figure 1 , between the sewage garbage inlet 325 and the air inlet 3151 which communicates with the sewage garbage storage cavity 323, there is a blocking structure 312 which prevents the sewage garbage from being directly sucked into the sewage tank exhaust passage 311, and the sewage tank upper cover 31 is provided with a sewage tank exhaust passage 311 which, together with the front end of the air inlet 21 of the main body 1 and the vacuum cleaner fan 2, forms a vacuum cleaner fan front exhaust passage 8, and the sewage tank exhaust passage 311 communicates with the vacuum cleaner fan front exhaust passage 8.

[0045] The sewage tank exhaust passage 311 comprises an air inlet 3151 which communicates with the sewage garbage storage cavity 323, and the sewage tank exhaust passage 311 comprises an exhaust hole 3152 which communicates with the vacuum cleaner fan front exhaust passage 8.

[0046] The sewage tank bottom shell 32 is provided with a sewage garbage passage 321, a sewage garbage inlet 325 and a sewage garbage storage cavity 323.

[0047] The one-way outward drainage device 33 is arranged on the side wall of the sewage tank bottom shell 32 at the front end of the air inlet 3151 and is slightly higher than the garbage limiting indication.

[0048] As shown in Figure 6 , the vacuum cleaner fan 2 is provided with a heat dissipation passage 22 near the air inlet 21.

[0049] Working principle:

[0050] When the vacuum cleaner fan 2 works, the vacuum cleaner fan air inlet 21 generates negative pressure, the air in the heat dissipation passage 22 is sucked into the vacuum cleaner fan and discharged, the heat dissipation passage 22 is connected to the parts inside the vacuum cleaner fan 2 that need to be cooled, so that the air flow cools the parts. The vacuum cleaner fan air inlet 21 generates negative pressure, and the exhaust passage 311 connected to the vacuum cleaner fan air inlet 21 also generates negative pressure, the air in the sewage tank combination 3 storage cavity is sucked into the exhaust passage 311 and enters the vacuum cleaner fan 2 and is discharged. If the air is sucked into the vacuum cleaner fan at this time, due to the action of negative pressure, it will not enter the heat dissipation passage 22. At this time, the one-way outward drainage device 33 is tightly attached to the wall of the sewage tank combination under the action of negative pressure, and the water pressed on the one-way outward drainage device 33 will not be discharged to the outside of the sewage tank combination 3. When the vacuum cleaner fan 2 stops working, under the condition of unfavorable placement, sewage has a certain chance to enter the inside of the vacuum cleaner fan 2. Since the one-way outward drainage device 33 is arranged on the passageway that the sewage must pass through, when the sewage passes through the one-way outward drainage device 33, as shown in Figure 5 , the pressure of the sewage will open the one-way outward drainage device 33 and discharge to the outside of the sewage tank combination, so that the sewage will not reach the heat dissipation passage 22 of the vacuum cleaner fan, and will not cause damage to the vacuum cleaner fan.

[0051] As shown in Figure 7 , a floor cleaning machine includes a cleaning head combination 9, a main body combination 6 and a handle combination 7.

[0052] As shown in Figure 8 , 9 , the cleaning head combination 9 includes a front shell 92, a bottom shell 91, an upper shell 101, a suction port 100, a cleaning roller assembly 93, a bottom cover 94, a front blocking structure 95, a side blocking structure 96, a rear blocking structure 97, a rear wheel 98, a front wheel 99, a water pump 104 and a connecting hose 103.

[0053] As shown in Figure 9As shown, the cleaning roller assembly 93 includes a roller support 931 and a cleaning layer 932.

[0054] like Figure 9 As shown, the bottom shell 91 includes a water tank 91120, a water nozzle 9114, a water squeezing structure 9116, and a drainage channel 9117. Figure 7 , 8 As shown, the main body assembly 6 includes the main body 1, vacuum cleaner fan 2, wastewater tank assembly 3, and battery pack 5.

[0055] like Figure 10 As shown, the handle assembly 7 includes a handle 71, control buttons 72 and 73, and a display screen 74.

[0056] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A structure for preventing water ingress into a vacuum cleaner fan on a floor cleaning appliance, comprising a vacuum cleaner fan and a wastewater tank assembly, wherein the wastewater tank assembly includes a wastewater tank inlet for wastewater and debris to enter the wastewater tank, and an outlet connected to the air inlet of the vacuum cleaner fan, wherein the air inlet of the vacuum cleaner fan is provided with a heat dissipation channel, characterized in that: The sewage tank combination is provided with a one-way outward drainage device between the sewage garbage inlet of the sewage tank and the air inlet of the vacuum cleaner fan.

2. The structure for preventing water from entering a vacuum cleaner fan according to claim 1, wherein: The one-way outward drainage device is arranged on a channel through which liquid enters the air inlet of the vacuum cleaner fan.

3. The structure for preventing water from entering a vacuum cleaner fan according to claim 1, wherein: The one-way outward drainage device can discharge liquid from inside to outside when the vacuum cleaner fan is not working.

4. The structure for preventing water from entering a vacuum cleaner fan according to claim 1, wherein: The one-way outward drainage device can not discharge liquid from inside to outside when the vacuum cleaner fan is working.

5. The structure for preventing water from entering a vacuum cleaner fan according to claim 1, wherein: The sewage tank combination is provided with a garbage limiting detection device.

6. The structure for preventing water from entering a vacuum cleaner fan according to claim 1, wherein: The sewage tank combination is provided with an air exhaust channel between the sewage garbage inlet of the sewage tank and the air inlet of the vacuum cleaner fan.

7. The structure for preventing water from entering a vacuum cleaner fan according to claim 6, wherein: The air exhaust channel of the sewage tank combination comprises an air inlet communicating with the internal storage cavity of the sewage tank.

8. The structure for preventing water from entering a vacuum cleaner fan according to claim 1, wherein: The one-way outward drainage device is arranged on the sewage tank side wall in front of the air inlet of the air exhaust channel of the sewage tank combination.

9. The structure for preventing water from entering a vacuum cleaner fan according to claim 1, wherein: The sewage tank combination is provided with a blocking device between the straight line connection between the sewage garbage inlet and the air outlet to prevent the sewage garbage from being directly sucked away.

10. A walk-behind scrubber comprising a handle, a cleaning head, and a main body assembly, wherein: The large body combination comprises a water-proof structure of the vacuum cleaner fan according to at least one of claims 1 to 9.

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