CN114190840B

CN114190840B - Hard ground cleaning machine

Info

Publication number: CN114190840B
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: 2023-05-26
Anticipated expiration: 2040-09-18
Also published as: CN114190840A

Abstract

The invention discloses a hard ground cleaning machine, comprising: a base portion having at least one suction nozzle; an upstanding body portion including 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 cleaning water tank for storing the cleaning liquid supplied to the base portion, the cleaning water tank being detachably supported on the housing and being accommodated in the cavity after at least a portion thereof passes through the first opening; a dirty liquid tank for receiving dirty liquid and debris, the dirty liquid tank being removably supported on the housing and being received in the cavity at least partially through the second opening; a suction motor mounted in the motor cavity, the suction motor being adapted to generate a working air flow from the at least one suction nozzle to the dirt liquid tank and into the motor cavity; an exhaust path is disposed between the motor cavity and the cavity for delivering a working air flow into the motor cavity toward the cavity. The hard floor cleaning machine of this case has lower noise.

Description

Hard ground 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 cleaning machine is a device that cleans the floor with cleaning liquid while recovering the cleaned cleaning liquid, and when in use, the device needs to use a suction motor to draw out dirt liquid along with other dirt on the floor, the dirt liquid and dirt will be trapped in the device, and "clean air" will leave the device and be discharged to the outside after passing through the suction motor.

At present, in the process of exhausting clean air, an exhaust path of a suction motor on a hard floor cleaning machine is short, or an exhaust space is limited, so that machine noise is large, and the use experience of a user is affected.

Disclosure of Invention

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

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

a dirty liquid tank for receiving dirty liquid and debris, the dirty liquid tank being removably supported on the housing and being received in the cavity at least partially through the second opening;

a suction motor mounted in said motor cavity, said suction motor being adapted to generate a working air flow from said at least one suction nozzle to said dirty liquid tank and into said motor cavity;

and the exhaust path is arranged between the motor cavity and the cavity and is used for conveying the working air flow entering the motor cavity towards 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.

In the above technical solution, preferably, the casing includes a bottom wall located between the motor cavity and the cavity, the bottom wall is provided with a plurality of air inlets and a plurality of air outlets, the dirty liquid tank is connected with the plurality of air inlets, and the plurality of air outlets are communicated with the motor cavity and the cavity. Further preferably, the plurality of exhaust ports surrounds the periphery of the plurality of intake ports. Or more preferably, the middle part of the bottom wall is provided with a boss protruding downwards, and the air inlets are distributed at the boss.

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

In the above technical scheme, preferably, a limiting partition for isolating the cleaning solution supply tank from the dirty solution tank is arranged in the cavity, and the limiting partition is in a hollow structure.

In the above-described aspect, preferably, the upright body portion includes a cooling air path adapted to supply cooling air to the motor portion and 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 unit further includes a handle assembly mounted above the housing, the handle assembly including a handle bar and a handle fixed to an upper portion of the bar and configured to be held by a user.

In the above technical solution, preferably, the base portion includes a bottom case, the bottom case includes a brush cavity having an opening at a lower portion, 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 rotating brush is disposed in the brush cavity, and the second suction nozzle is flat.

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

Drawings

FIG. 1 is a schematic perspective view of a hard floor cleaning machine according to an embodiment of the present invention; wherein the upright host 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 machine section is in a rearwardly inclined use position.

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

Fig. 4 is a perspective view of a left side fresh water tank of a hard floor cleaning machine according to an embodiment of the present invention removed from a housing.

Fig. 5 is a perspective view showing a right sewage tank of a hard floor cleaning machine removed from a housing according to an 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 housing according to an embodiment of the present invention.

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

Fig. 9 is a schematic diagram of a positional relationship between a rear support portion and a suction motor according to an embodiment of the present invention; wherein the suction motor is in a sectional state.

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

Wherein: 100. a hard floor cleaning machine; 1. an upstanding host portion; 2. a base portion; 21. a bottom case; 22. brushing the cavity; 221. an opening; 23. a rotary brush; 24. a first suction nozzle; 25. a second suction nozzle; 26. a suction channel; 10. a housing; 3. a clean water tank; 4. a dirty liquid tank; 5. a suction motor; 6. a handle assembly; 11. a bottom support; 12. an upper mounting portion; 13. a front support part; 14. a rear support portion; 121. a peripheral sidewall; 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. spacing and isolating; 129. a slit; 50. a motor housing; 51. a fan assembly; 52. a motor assembly; 521. a wind wheel; 522. a fan housing; 5221. an air suction port; 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. parameter indicator lights; 61. a handle; 62. a handle bar; 63. the switch is operated.

Detailed Description

In order to describe the technical content, constructional features, achieved objects and effects of the invention in detail, the following description will be made with reference to 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 an upright structure, consisting of two parts, an upright main section 1 and a base section 2. The lower part of the upright main section 1 is pivotally mounted to the base section 2. The base part 2 is adapted to be moved over a hard floor to effect wet cleaning of the hard floor. In this case, the upright main section 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 referred to in this example as "up", "down", "left", "right", "front" and "rear" are consistent with the directions at the example of fig. 1.

As shown in fig. 3, the base portion 2 includes a bottom case 21, a brush chamber 22 having an opening 221 at a lower portion is formed in the bottom case 21, a rotary brush 23 is rotatably provided in the brush chamber 22 about an axis, and a first suction nozzle 24 associated with the rotary brush 23 and a liquid spray nozzle (not shown) associated with the rotary brush 23 are provided in the bottom case 21. A portion of the rotating brush 23 protrudes downwardly from the opening 221 to make frictional contact with the floor surface to be cleaned, and the rotating brush 23 is configured to pick up dirt and liquid from the floor surface to be cleaned and deliver the dirt to the first suction nozzle 24 through the opening 221 during rotation. The lower part of the bottom case 21 is further provided with a second suction nozzle 25 at the rear side of the opening 221, and the second suction nozzle 25 adopts a flexible flat suction nozzle structure, and the flexible flat suction nozzle can suck up small particle dust or liquid drops on the floor to be cleaned in the process of contacting with the floor to be cleaned. A suction channel 26 is also provided in the bottom shell 21, into which suction channel 26 the first suction nozzle 24 and the second suction nozzle 25 are in fluid communication.

Referring to fig. 2, 4-5, the upright main section 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 nozzle so that liquid within the clean water tank 3 is applied to the rotating brush 23 via the liquid jet nozzle 25. The suction channel 26 is in fluid communication with the dirty liquid tank 4 for feeding the dirty liquid and dirt sucked into the suction channel 26 by the first suction nozzle 24 and the second suction nozzle 26 together into the dirty liquid tank 4. 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 dirty liquid tank 4.

In this example, the cabinet 10 includes a bottom support 11 at a lower portion, an upper mounting portion 12 at an upper portion, a front support 13 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 below the peripheral side wall 121, the upper mounting portion 12 having a motor cavity 123 (see fig. 8) defined by the peripheral side wall 121 and the bottom wall 122 therein, the top of the upper mounting portion 12 having a handle 124 located above the motor cavity 123 and provided upwardly, the handle 124 having a plurality of control buttons 125 thereon for a user to operate the hard floor cleaning machine 10. The suction motor 5 is mounted within a motor cavity 123 (see fig. 8). The motor chamber 123 also has therein a cooling air path adapted to supply cooling air to the motor portion of the suction motor 5 and remove heated cooling air from the motor portion; in order to form the cooling air path, a plurality of through holes 1211 penetrating the inside and outside are provided on the peripheral side wall 121, and these 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 in the middle and protruding downward and a peripheral portion 1222 surrounding the outside of the boss 1221; the peripheral portion 1222 is provided with a plurality of exhaust holes 126, and the boss 1221 is provided with a plurality of intake holes 127.

As further shown in fig. 4-5, a cavity 128 is defined between the front support 13, the rear support 14, the bottom wall 122, and the bottom support 11, the cavity 128 being in communication with the motor cavity 123 located at the top 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, the dirty liquid tank 4 is partially received within the cavity 128 via the first opening 1281, and the dirty liquid tank 4 is also removable from the cavity 128 via the first opening 1281. As shown in fig. 4, the fresh water tank 3 is partially located within the cavity 128 and can be removed from the cavity 128 via the 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 stop 1283 is hollowed out so as not to prevent the free flow of air into the cavity 128. When the dirty liquid tank 4 is mounted in the cavity 128, the upper portion of the dirty liquid tank 4 sealingly engages the boss 1221 of the bottom wall 122, also enabling the working air flow in the dirty liquid tank 4 to flow upwardly only 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 dirty is also formed between the clean water tank 3 and the second opening 1282; that is, a gap 129 communicated with the cavity 128 is reserved at the joint of the liquid tank 4 and the first opening 1281 and the joint of the clear water tank 3 and the second opening 1282; thus, the air flow flowing from the plurality of air vents 126 into the cavity 128 will be exhausted from the gap 129 to the outside. In this configuration, the space of the cavity 128 is large enough to allow the working air flow entering the cavity 128 to expand as much as possible, thereby reducing the noise of the air flow.

As shown in fig. 7 to 10, the suction motor 5 includes a motor housing 50, a blower assembly 51 installed inside the motor housing 50, and a motor assembly 52, the motor assembly 52 being located above the blower assembly 51. The lower end of the motor housing 50 is fixedly mounted to 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, wherein the middle of the bottom of the fan housing 522 is provided with an air suction inlet 5221 communicated with a plurality of air inlets 127, and the outer side wall is provided with a plurality of air outlets 5222; the air outlet direction of the air outlets 5222 faces downwards. The motor chamber 123 is further provided with a partition plate 53 located below the air outlets 5222, and after the air flow flowing out of the air outlets 5222 collides with the partition plate 53, the air flow changes an angle (in other embodiments, an angle of 45-135 degrees can be selected) of approximately 90 degrees towards the inner side direction and then flows out of the air outlets 126; the noise of the air flow is reduced once the air flow hits the baffle 53 and turns around.

As shown in fig. 8 and 10, the partition 53 is annular and has a notch 531 in the middle and opposite upper and

lower surfaces

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

As further shown in fig. 10, a first chamber 151 for flowing air is defined between the plurality of air outlets 5222 and the upper surface 532 of the partition 53, a second chamber 152 for flowing air is defined between the lower surface 533 of the partition 53 and the peripheral portion 1222 of the bottom wall 122, the first chamber 151 and the second chamber 152 are communicated through the notch 531, and the second chamber 152 forms an expansion chamber structure with respect to the first chamber 151. In this way, the noise of the working air flowing from the first chamber 151 to the second chamber 152 is reduced again.

In this way, the working air flow escaping from the dirty liquid tank 4 will flow through the air inlets 127, the air inlets 5221, the air outlets 5222, the first chamber 151, the notch 531, the second chamber 152, the air outlets 126, the cavity 128 in sequence, and finally be discharged to the outside from the slits 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 a plurality of warning lamps 1311 for warning the user that the current hard floor cleaning machine is in an abnormal state, such as abnormal rotation of the roller brush in the base part 2, water shortage in the clean water tank 3, full liquid in the dirty liquid tank 4, etc., and a plurality of parameter indicating lamps 1312 for showing the current hard floor cleaning machine working parameters to the user, such as cleaning liquid flow rate, battery power, etc.

The handle assembly 6 includes a handle bar 62 fixed to an upper portion of the rear support 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 feeding unit for feeding the solution in the clean water tank 3 to the base portion 2 and a dirty liquid recovery unit and a control unit (not shown) for removing the dirty liquid from the floor to be cleaned and feeding the dirty liquid into the dirty liquid tank, in addition to the clean water tank 3 and the dirty liquid tank 4. The liquid delivery unit may comprise the necessary piping, cleaning liquid pump, etc.

The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. A hard floor cleaning machine comprising:

a base portion including at least one suction nozzle;

a clear water tank for storing a cleaning liquid supplied to the base portion, the clear water tank being detachably supported on the housing and being accommodated in the cavity at least partially through the first opening;

a dirty liquid tank for receiving dirty liquid and debris, said dirty liquid tank being removably supported on said housing and being received in said cavity at least partially through said second opening, said at least one suction nozzle being in fluid communication with said dirty liquid tank;

an exhaust path disposed between said motor cavity and said cavity for delivering said working air flow into said motor cavity toward said cavity;

the shell also comprises a bottom wall positioned between the motor cavity and the cavity, wherein a plurality of exhaust ports are arranged on the bottom wall and are communicated with the motor cavity and the cavity, the exhaust path passes through the exhaust ports, and the working air flow entering the motor cavity is sent into the cavity through the exhaust ports; a clearance fit is formed between the clean water tank and the first opening, and a clearance fit is formed between the dirty liquid tank and the second opening; the working air flow entering the cavity is discharged to the outside through the clearance fit.

2. The machine of claim 1, wherein the joint of the clean water tank and the first opening and the joint of the dirty liquid tank and the second opening are provided with gaps communicated with the cavity, and the air flow flowing into the cavity from the plurality of air outlets is discharged from the gaps to the outside.

3. The machine of claim 1, wherein a plurality of air inlets are provided in the bottom wall, and the dirty liquid tank is connected to the plurality of air inlets.

4. A hard floor cleaning machine according to claim 3 wherein the plurality of air outlets are around the periphery of the plurality of air inlets.

5. A hard floor cleaning machine according to claim 3 wherein the central portion of the bottom wall is provided with downwardly projecting bosses, and the air inlets are distributed at the bosses.

6. The hard floor cleaning machine of claim 1, wherein the first opening and the second opening are disposed side-to-side apart.

7. The hard floor cleaning machine according to claim 1, wherein a limiting partition for isolating the clean water tank from the dirty liquid tank is arranged in the cavity, and the limiting partition is in a hollow structure.

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

9. The hard floor cleaning machine of claim 1, wherein the upright body section 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 for grasping by a user.

10. The machine of claim 1, wherein 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 disposed at a rear side of the opening, the brush cavity being provided with a rotating brush therein, the second suction nozzle being flat.