CN114190840A

CN114190840A - Hard floor cleaning machine

Info

Publication number: CN114190840A
Application number: CN202010989242.3A
Authority: CN
Inventors: 卞庄
Original assignee: Suzhou Ruijiu Intelligent Technology Co ltd
Current assignee: Suzhou Ruijiu Intelligent Technology Co ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2022-03-18
Anticipated expiration: 2040-09-18
Also published as: CN114190840B

Abstract

The invention discloses a hard ground cleaning machine, comprising: a base portion having at least one suction nozzle; an upright body portion including a housing having a lower portion pivotally connected to the base portion, the housing including a motor cavity and a cavity having a first opening and a second opening, the cavity being located below the motor cavity; a clean water tank for storing the cleaning liquid supplied to the base portion, the clean water tank being detachably supported on the housing and being received in the cavity after passing at least partially through the first opening; a dirty liquid tank for receiving dirty liquid and debris, the dirty liquid tank being detachably supported on the housing and received in the cavity after at least partially passing through the second opening; a suction motor mounted within the motor cavity, the suction motor adapted to generate a working air flow from the at least one suction nozzle to the sump and into the motor cavity; and an exhaust path arranged between the motor cavity and the cavity for conveying the working air flow entering the motor cavity towards the cavity. The hard ground cleaning machine has lower noise.

Description

Hard floor cleaning machine

Technical Field

The invention relates to the technical field of cleaning equipment, in particular to a hard ground cleaning machine.

Background

A hard floor washing machine is a device for washing the floor with a cleaning liquid while recovering the washed cleaning liquid, which device, when in use, requires the suction motor to extract dirt liquid together with other dirt on the floor, which dirt liquid and dirt will be trapped inside the device, while "clean air" will leave the device after passing the suction motor and be discharged to the outside.

Currently, the suction motor on a hard floor washer has either a short exhaust path or a limited exhaust space during the process of exhausting "clean air", which results in a loud noise of the machine and affects the user experience.

Disclosure of Invention

In order to solve the technical problems, the invention aims to provide a hard floor cleaning machine with low noise.

In order to achieve the purpose of the invention, the invention adopts the following technical scheme: a hard floor cleaning machine comprising:

a base portion having at least one suction nozzle;

an upright body portion including a housing having a lower portion pivotally connected to the base portion, the housing including a motor cavity and a cavity having a first opening and a second opening, the cavity being located below the motor cavity;

a clean water tank for storing cleaning fluid supplied to said base portion, said clean water tank being removably supported on said housing and received in said cavity at least partially through said first opening, said at least one suction nozzle being in fluid communication with said dirty fluid tank;

a sump for receiving sump and debris, said sump being removably supported by said housing and received within said cavity at least partially through said second opening;

a suction motor mounted within said motor cavity, said suction motor adapted to generate a working air flow from said at least one suction nozzle to said sump and into said motor cavity;

an exhaust path disposed between the motor cavity and the cavity for conveying the working air flow entering the motor cavity toward the cavity.

In the above technical solution, preferably, a clearance fit is formed between the clean water tank and the first opening and/or a clearance fit is formed between the dirty liquid tank and the second opening, and the air flow entering the cavity escapes to the outside through the clearance fit.

Among the above-mentioned technical scheme, preferably, the casing including be located the motor chamber with the diapire between the cavity, the diapire on be provided with a plurality of air inlets and a plurality of gas vent, the foul solution case with a plurality of air inlets switch-on, a plurality of gas vent intercommunication the motor chamber with the cavity. Further preferably, the plurality of exhaust ports surround the plurality of intake ports. Or further preferably, the middle part of the bottom wall is provided with a boss protruding downwards, and the plurality of air inlets are distributed at the boss.

In the above technical solution, preferably, the first opening and the second opening are arranged away from each other in the left-right direction.

In the above technical solution, preferably, the cavity is internally provided with a limit partition for isolating the cleaning solution supply tank from the waste solution tank, and the limit partition is in a hollow structure.

In the above solution, preferably, the upright body portion includes a cooling air path adapted to provide cooling air to the motor portion and to remove heated cooling air from the motor portion, the cooling air path including a cooling air inlet and a cooling air outlet provided on the casing.

In the above technical solution, preferably, the upright main body portion further includes a handle assembly installed above the housing, and the handle assembly includes a handle bar and a handle fixed on an upper portion of the handle bar and configured to be held by a user.

In the above technical solution, preferably, the base portion includes a bottom shell, the bottom shell includes a brush cavity having an opening at a lower portion thereof, a first suction nozzle in fluid communication with the brush cavity, and a second suction nozzle located at a rear side of the opening, a rotary brush is disposed in the brush cavity, and the second suction nozzle is flat.

The hard floor cleaner of the present invention has lower noise, as will be described in detail hereinafter.

Drawings

FIG. 1 is a perspective view of a hard floor cleaning machine according to an embodiment of the present invention; wherein the upright main body portion is in an upright rest position.

FIG. 2 is another perspective view of a hard floor cleaning machine according to an embodiment of the present invention; wherein the upright main body portion is in a rearwardly inclined use position.

FIG. 3 is a cross-sectional view of a base portion provided in accordance with an embodiment of the present invention.

Fig. 4 is a perspective view illustrating the left clear water tank of the hard floor cleaning machine according to the embodiment of the invention removed from the cabinet.

FIG. 5 is a perspective view of the right side waste tank of the hard floor cleaning machine removed from the housing according to the embodiment of the present invention.

Fig. 6 is an enlarged schematic view at a in fig. 5.

Fig. 7 is a schematic perspective view of a suction motor mounted on a casing according to an embodiment of the present invention.

Fig. 8 is a disassembled schematic view of the components shown in fig. 7.

FIG. 9 is a schematic view of a position relationship between a rear support and a suction motor according to an embodiment of the present invention; wherein the suction motor is in a cutaway state.

Fig. 10 is an enlarged schematic view at B in fig. 9.

Wherein: 100. a hard floor cleaning machine; 1. an upright main body portion; 2. a base portion; 21. a bottom case; 22. a brush cavity; 221. an opening; 23. rotating the brush; 24. a first suction nozzle; 25. a second suction nozzle; 26. a suction channel; 10. a housing; 3. a clear water tank; 4. a dirty liquid tank; 5. a suction motor; 6. a handle assembly; 11. a bottom support portion; 12. an upper mounting portion; 13. a front support portion; 14. a rear supporting part; 121. a peripheral side wall; 122. a bottom wall; 123. a motor cavity; 124. a handle; 125. a control button; 1211. a through hole; 1221. a boss; 1222. a peripheral portion; 126. an exhaust hole; 127. an air inlet; 128. a cavity; 1281. a first opening; 1282. a second opening; 1283. limiting and isolating; 129. a gap; 50. a motor housing; 51. a fan assembly; 52. a motor assembly; 521. a wind wheel; 522. a fan housing; 5221. an air suction opening; 5222. an air outlet; 53. a partition plate; 531. a notch; 532. an upper surface; 533. a lower surface; 151. a first chamber; 152. a second chamber; 131. a human-machine interface; 1311. a warning light; 1312. a parameter indicator light; 61. a handle; 62. a handle bar; 63. the switch is operated.

Detailed Description

For the purpose of illustrating the technical content, the constructional features, the achieved objects and the effects of the invention in detail, reference will be made to the following detailed description of the embodiments in conjunction with the accompanying drawings.

Fig. 1-2 illustrate a hard floor cleaning machine 100 according to one embodiment of the present invention, which is a vertical structure consisting of two parts, an upright main body part 1 and a base part 2. The lower part of the upright main body portion 1 is pivotally mounted to the base portion 2. The base part 2 is adapted to be moved over a hard floor to enable wet cleaning of the hard floor. In this example, the upright main body portion 1 is movable between an upright rest position (the position shown in fig. 1) and a rearwardly inclined use position (the position shown in fig. 2).

The directional relationships of "up", "down", "left", "right", "front" and "rear" mentioned in this example correspond to the directions in the example of fig. 1.

As shown in fig. 3, the base part 2 includes a bottom shell 21, a brush chamber 22 having an opening 221 at a lower portion is formed in the bottom shell 21, a rotary brush 23 is rotatably disposed in the brush chamber 22 around an axis, and a first suction nozzle 24 assigned to the rotary brush 23 and a liquid spray nozzle (not shown) assigned to the rotary brush 23 are disposed inside the bottom shell 21. A portion of the rotating brush 23 protrudes downward from the opening 221 to come into frictional contact with the floor surface to be cleaned, and the rotating brush 23 is configured to pick up the dirty liquid and dirt from the floor surface to be cleaned and send them to the first suction nozzle 24 through the opening 221 during rotation. The lower part of the bottom shell 21 is further provided with a second suction nozzle 25 at the rear side of the opening 221, and the second suction nozzle 25 is of a flexible flat suction nozzle structure which can suck up small particles of dust or liquid drops on the floor to be cleaned during the contact with the floor to be cleaned. A suction channel 26 is also provided in the bottom shell 21, into which suction channel 26 both the first suction nozzle 24 and the second suction nozzle 25 are fluidly connected.

Referring to fig. 2, 4-5, the upright main body portion 1 includes a housing 10, a clean water tank 3 and a dirty liquid tank 4 removably mounted on the housing 10, a suction motor 5 fixedly mounted within the housing 10, and a handle assembly 6 mounted on an upper portion of the housing 10. The clean water tank 3 is in fluid communication with a liquid jet so that the liquid in the clean water tank 3 is applied to the rotating brush 23 via the liquid jet 25. The suction passage 26 is in fluid communication with the dirty liquid tank 4 so as to feed the dirty liquid sucked into the suction passage 26 by the first suction nozzle 24 and the second suction nozzle 26 into the dirty liquid tank 4 together with the dirt. The suction motor 5 is capable of producing a working air flow from the first suction nozzle 24 and the second suction nozzle 25 into the suction channel 26 and further into the sump 4.

In this example, the cabinet 10 includes a lower bottom support 11, an upper mounting portion 12 located at an upper portion, a front support 13 located at a middle portion, and a rear support 14. The upper mounting portion 12 includes a peripheral side wall 121 and a bottom wall 122 located at a lower portion of the peripheral side wall 121, the upper mounting portion 12 has a motor cavity 123 (see fig. 8) defined by the peripheral side wall 121 and the bottom wall 122 therein, the top portion of the upper mounting portion 12 has a handle 124 located above the motor cavity 123 and upwardly fed, and the handle 124 has a plurality of control buttons 125 for a user to operate the hard floor washing machine 10. The suction motor 5 is mounted in a motor cavity 123 (see fig. 8). Also present within the motor cavity 123 is a cooling air path adapted to provide cooling air to the motor portion of the suction motor 5 and to remove heated cooling air from the motor portion; in order to form the cooling air path, a plurality of through holes 1211 penetrating the inner and outer sides are provided in the peripheral sidewall 121, and the through holes 1211 constitute a cooling air inlet and a cooling air outlet.

As shown in fig. 6, the bottom wall 122 includes a boss 1221 located at the middle and protruding downward, and a peripheral portion 1222 surrounding outside the boss 1221; the peripheral portion 1222 is formed with a plurality of exhaust holes 126, and the boss 1221 is formed with a plurality of air inlets 127.

As further shown in fig. 4-5, the front support 13, the rear support 14, the bottom wall 122 and the bottom support 11 define a cavity 128 therebetween, the cavity 128 communicating with the motor chamber 123 in the upper portion through a plurality of vent holes 126. The cavity 128 has a first opening 1281 on the right side and a second opening 1282 on the left side. As shown in fig. 5, part of the dirty liquid tank 4 is accommodated in the cavity 128 via the first opening 1281, and the dirty liquid tank 4 can also be removed from the cavity 128 via the first opening 1281. As shown in fig. 4, the clean water tank 3 is partially located within the cavity 128 and can be removed from the cavity 128 via a second opening 1282. A limit partition 1283 for separating the dirty liquid tank 4 and the clean water tank 3 is arranged in the cavity 128; the restriction partition 1283 is hollowed out so that it does not prevent the free flow of air entering the cavity 128. When the dirty liquid tank 4 is installed in the cavity 128, the upper portion of the dirty liquid tank 4 is in sealing engagement with the boss 1221 of the bottom wall 122, so that the working air flow in the dirty liquid tank 4 can only flow upward from the plurality of air inlets 127 on the boss 1221. In this example, a clearance fit is formed between the dirty liquid tank 4 and the first opening 1281, and a clearance fit is also formed between the clean water tank 3 and the second opening 1282; namely, gaps 129 communicated with the cavity 128 are reserved at the joint of the liquid tank 4 and the first opening 1281 and the joint of the clean water tank 3 and the second opening 1282; thus, air flowing into the cavity 128 from the plurality of exhaust holes 126 will be exhausted to the outside from the gap 129. In this structure, the space of the cavity 128 is large enough to expand the working air flow entering the cavity 128 as much as possible, thereby reducing the noise of the air flow.

As shown in fig. 7-10, the suction motor 5 includes a motor housing 50, a fan assembly 51 mounted inside the motor housing 50, and a motor assembly 52, the motor assembly 52 being located above the fan assembly 51. The lower end of the motor housing 50 is fixedly mounted on the bottom wall 122.

As shown in fig. 10, the fan assembly 52 includes a wind wheel 521 and a fan housing 522 located at the periphery of the wind wheel 521, the middle of the bottom of the fan housing 522 has an air inlet 5221 communicated with a plurality of air inlets 127, and the outer side wall has a plurality of air outlets 5222; the air outlets 5222 face downward. A partition plate 53 positioned below the plurality of air outlets 5222 is further disposed in the motor cavity 123, and after the airflow flowing out from the plurality of air outlets 5222 collides with the partition plate 53, the airflow changes to an angle of approximately 90 degrees (in other embodiments, an angle of 45-135 degrees may also be selected) toward the inside direction, and then flows out from the plurality of air vents 126; the airflow noise will be attenuated once the airflow hits the baffle 53 and turns.

As shown in fig. 8 and 10, the partition 53 is annular and has a centrally located notch 531 and opposed upper and

lower surfaces

532, 533. The partition 53 is fixedly mounted on the motor housing 50.

As further shown in fig. 10, the plurality of air outlets 5222 define a first chamber 151 for air flow between the upper surface 532 of the partition 53, a second chamber 152 for air flow between the lower surface 533 of the partition 53 and the outer periphery 1222 of the bottom wall 122, the first chamber 151 and the second chamber 152 are connected by a gap 531, and the second chamber 152 forms an expansion chamber structure with respect to the first chamber 151. Thus, the noise of the working air flowing from the first chamber 151 to the second chamber 152 is further reduced.

Thus, the working air flow escaping from the waste liquid tank 4 flows through the air inlets 127, the air suction ports 5221, the air outlets 5222, the first chamber 151, the notch 531, the second chamber 152, the air vents 126, and the cavity 128 in this order, and is finally discharged to the outside through the gaps 129 on the left and right sides.

As further shown in fig. 1-5, the front support 13 has a human-machine interface 131 located outside the cavity 128, and the human-machine interface 131 includes several warning lights 1311 for reminding a user of an abnormal state in the hard floor washing machine currently, such as abnormal rotation of a roller brush in the base part 2, lack of water in the clean water tank 3, full of liquid in the dirty liquid tank 4, and the like, and several parameter indicating lights 1312 for showing the working parameters of the hard floor washing machine currently to the user, such as the flow rate of the cleaning liquid, the battery power, and the like.

The handle assembly 6 includes a handle bar 62 fixed to an upper portion of the rear support portion 14 and a handle 61 fixed to an upper portion of the handle bar 62 and configured to be held by a user. The handle 61 is provided with a plurality of operation switches 63.

The hard floor cleaning machine 100 of this example is provided with a liquid supply unit for supplying the solution in the clean water tank 3 to the base part 2, a dirty liquid recovery unit for removing dirty liquid from the floor to be cleaned and feeding it to the dirty liquid tank, and a control unit (not shown in the figure), in addition to the clean water tank 3 and the dirty liquid tank 4. The liquid delivery unit may comprise necessary piping, a cleaning liquid pump, etc.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A hard floor cleaning machine comprising:

a base portion including at least one suction nozzle;

a clean water tank for storing the cleaning liquid supplied to said base portion, said clean water tank being removably supported on said housing and received in said cavity at least partially through said first opening;

a sump for receiving sump and debris, said sump being removably supported by said housing and received within said cavity at least partially through said second opening, said at least one suction nozzle being in fluid communication with said sump;

2. A hard floor cleaning machine according to claim 1 wherein said clean water tank is in clearance fit with said first opening and/or said dirty liquid tank is in clearance fit with said second opening, and said working air flow entering said cavity is exhausted to the outside through said clearance fit.

3. A hard floor cleaning machine as defined in claim 1 wherein said housing includes a bottom wall between said motor chamber and said cavity, said bottom wall having a plurality of air inlets and a plurality of air outlets, said dirty liquid tank communicating with said plurality of air inlets, said plurality of air outlets communicating with said motor chamber and said cavity.

4. The hard floor cleaning machine of claim 3, wherein the plurality of air exhaust ports surround the periphery of the plurality of air intake ports.

5. The hard floor cleaning machine of claim 3, wherein the bottom wall has a downwardly projecting boss at a central portion thereof, and the plurality of air inlets are distributed at the boss.

6. The hard floor cleaning machine of claim 1, wherein the first opening and the second opening are disposed in a left-right facing relationship.

7. The hard floor cleaning machine according to claim 1, wherein a spacing partition for separating the cleaning solution supply tank from the waste solution tank is arranged in the cavity, and the spacing partition is of a hollow structure.

8. The hard floor cleaner of claim 1, wherein the upright body portion includes a cooling air path adapted to provide cooling air to the motor portion and to remove heated cooling air from the motor portion, the cooling air path including a cooling air inlet and a cooling air outlet disposed on the housing.

9. The hard floor cleaning machine of claim 1, wherein the upright main body portion further comprises a handle assembly mounted above the housing, the handle assembly comprising a handle bar and a handle secured to an upper portion of the bar and configured to be held by a user.

10. A hard floor cleaning machine according to claim 1 wherein said base portion includes a bottom shell, said bottom shell including a brush chamber having an opening at a lower portion thereof, a first suction nozzle in fluid communication with said brush chamber, and a second suction nozzle located rearward of said opening, said brush chamber having a rotating brush disposed therein, said second suction nozzle being flat.