Surface cleaning device

Abstract

The invention provides a surface cleaning device which comprises a machine body (1), a ground brush (2), a sewage treatment unit (3) and an air exhaust unit (4), the machine body (1) is connected with the ground brush (2) in a swinging mode, the ground brush (2) moves on a cleaned surface (7) for cleaning, the ground brush (2) sucks dirt and sends the dirt into the sewage treatment unit (3) through a dirt flow channel, and the sewage treatment unit (3) exhausts separated air through an air exhaust flow channel. The exhaust port (6) is formed in the end, close to one side of the floor brush (2), of the floor brush (2) or the machine body (1), the exhaust port (6) is communicated with the exhaust flow channel, and the exhaust port (6) blows airflow to a cleaned surface (7) close to the floor brush (2); according to the invention, the problem that part of sewage steam is discharged out along with airflow is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning devices, and more specifically, to a surface cleaning device. Background Art

[0002] Currently, there is a surface cleaning device, which includes a sewage treatment unit and an air extraction unit. The suction effect of the air extraction unit forms a strong suction airflow, so as to suck the dirt on the surface to be cleaned. In order to better clean the surface to be cleaned, a wet cleaning method is adopted, such as spraying water on the surface to be cleaned and using a wet brush to clean the surface to be cleaned. Therefore, wet cleaning will generate sewage. Then, under the action of the air extraction unit, air and sewage will be sucked into the sewage treatment unit, where the sewage and air will be separated. The sewage will be intercepted in the sewage tank, while the air will be discharged.

[0003] However, although the sewage treatment unit can intercept most of the sewage, when the suction effect is increased or the amount of sewage is large (such as a carpet cleaner), there will be a situation where the separation is too late, and a small amount of sewage will be discharged into the environment in the form of water vapor. The exhaust port of the surface cleaning device will also be covered with dirt. Therefore, there is a problem that it will spray on people and furniture when discharged into the environment, and the dirt can be seen on the surface of the machine due to the exhaust port being set on the surface of the machine.

[0004] To solve the above problems, the current main solution is to improve the separation performance of the sewage treatment unit and at the same time assist in adding a better filter to block the dirt inside. The applicant has found that this results in a more complex sewage treatment unit and frequent cleaning or replacement of the filter, and the blocked filter will also affect the working efficiency. However, there has been no new technical route to solve this problem until the filing of this application.

[0005] In this application, the applicant will propose a new technical route to solve the problem, and thus propose a surface cleaning device. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the defects of the prior art and propose a surface cleaning device, which is beneficial to solving the problem that part of the sewage and water vapor are discharged out with the airflow.

[0007] Compared with the prior art, the present invention proposes a surface cleaning device, which includes a body, a floor brush, a sewage treatment unit and an air extraction unit. The body is swingably connected to the floor brush. The floor brush moves on the surface to be cleaned for cleaning. The floor brush sucks in dirt and sends it into the sewage treatment unit through a dirt flow channel. The sewage treatment unit discharges the separated air through an exhaust air flow channel. It further includes an exhaust port provided at the floor brush or one end of the body close to the floor brush. The exhaust port is communicated with the exhaust air flow channel, and the exhaust port blows the airflow towards the surface to be cleaned near the floor brush.

[0008] After adopting the above structure, compared with the prior art, the present invention has the following advantages: Through improvement, the present disclosure provides a new technical route to solve the problem that a part of sewage water vapor is discharged outside with the air flow. Specifically, the position of the exhaust port has changed. Unlike the prior art where it is discharged into the environment, the exhaust port blows the air flow towards the surface to be cleaned near the floor brush. In this way, on the one hand, by using the strong suction force on the side of the floor brush, the dirty sewage vapor discharged from the exhaust port is immediately sucked back by the floor brush, thus reducing pollution. Therefore, the new dirt caused by the exhaust port blowing the air flow towards the surface to be cleaned near the floor brush will be less. On the other hand, during cleaning, the floor brush will move back and forth for cleaning. Therefore, each movement is a cleaning. During the back-and-forth movement cleaning, the surface to be cleaned will be cleaned again, and then the new dirt will also be immediately cleaned off. As the number of movements increases, the dirt degree of the finally cleaned surface (such as a carpet) is significantly reduced (or said to have been cleaned up), and then the dirty sewage vapor discharged from the exhaust port will also be significantly reduced, and no new dirt will be generated, thus completing the cleaning.

[0009] As can be seen from the above, the new technical route is completely different from the prior art. The surface cleaning device obtained according to the present disclosure will not spray on people and furniture, and no dirt can be seen on the surface of the machine body.

[0010] In some embodiments, a rotating joint is provided at the lower end of the machine body. The lower end of the rotating joint is rotatably connected to the floor brush, and the upper end of the rotating joint is connected to the lower end of the machine body. The exhaust port at this end of the machine body near the floor brush refers to an exhaust port provided on the rotating joint.

[0011] In some embodiments, the exhaust port is provided with a wind guiding vane, and the wind guiding vane guides the air flow towards the surface to be cleaned.

[0012] In some embodiments, the wind guiding vane guides the air flow towards the surface to be cleaned obliquely downward relative to the surface to be cleaned.

[0013] In some embodiments, a sewage treatment unit and an air extraction unit are provided in the machine body. The dirty flow channel enters the machine body from the floor brush through the rotating joint and then enters the sewage treatment unit. The exhaust flow channel goes from the sewage treatment unit upward to the air extraction unit, and then downward to this end of the machine body near the floor brush and communicates with the exhaust port.

[0014] In some embodiments, the exhaust port obliquely points to the surface to be cleaned.

[0015] In some embodiments, the machine body is provided with a handle. The user holds the handle to tilt the machine body to push the surface cleaning device to work. When the machine body is tilted, the direction of the exhaust port is close to the rear side of the floor brush.

[0016] In some embodiments, the exhaust port includes a first outlet disposed at the rear side of the floor brush and a second outlet disposed downward.

[0017] In some embodiments, the body is provided with a handle, and a U-shaped groove is provided at the rear side of the floor brush. The lower end of the rotating joint is rotatably connected to the U-shaped groove. The exhaust port includes a second outlet located at the rear side of the floor brush. When the user holds the handle and tilts the body to push the surface cleaning device to work, when the body is tilted, the airflow discharged from the second outlet blows towards the surface to be cleaned where the U-shaped groove is located. Description of the Drawings

[0018] Figure 1 It is a three-dimensional schematic diagram of a surface cleaning device.

[0019] Figure 2 It is a three-dimensional schematic diagram of the surface cleaning device from the bottom view perspective.

[0020] Figure 3 It is an enlarged schematic diagram of A.

[0021] Figure 4 It is a top view schematic diagram of a surface cleaning device (in the upright state).

[0022] Figure 5 It is a cross-sectional view taken along the line A-A (in the upright state).

[0023] Figure 6 It is an enlarged schematic diagram of B.

[0024] Description of the reference numerals: 1 - body, 2 - floor brush, 3 - sewage treatment unit, 4 - air extraction unit, 5 - rotating joint, 6 - exhaust port, 7 - surface to be cleaned, 8 - guide vane, 9 - handle, 10 - first outlet, 11 - second outlet, 12 - U-shaped groove, 13 - guide wheel. Detailed Embodiments

[0025] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description can be applied to other implementation schemes, variant schemes, improvement schemes, equivalent schemes, and other technical schemes that do not depart from the spirit and scope of the present invention.

[0026] Those skilled in the art should understand that in the disclosure of the present invention, the orientation or positional relationship indicated by terms such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention.

[0027] In the application scenarios of cleaning blankets with large water volume and large suction, the present disclosure has particular advantages. This is because: in such application scenarios, it has become very difficult to improve the performance of the existing technology solutions. According to the ideas of the existing technology, either the sewage treatment unit 3 is improved, or the filter is continued to be increased. However, it is very difficult to improve the sewage treatment unit 3, and the structure of the improved sewage treatment unit 3 will become complex, resulting in more difficult cleaning and more prone to dirt accumulation. Continuing to increase the filter is not conducive to large suction and is more likely to be blocked, requiring frequent cleaning or replacement. Since the technical route of the present disclosure is completely different, there will be no problems encountered in the improvement routes of the existing technology.

[0028] The present disclosure is Figures 1 to 6 shown as a surface cleaning device, including a body 1, a floor brush 2, a sewage treatment unit 3, and an air extraction unit 4. The body 1 is swingably connected to the floor brush 2. The floor brush 2 moves on the surface to be cleaned 7 for cleaning. The floor brush 2 sucks in dirt and sends it into the sewage treatment unit 3 through the dirt flow channel. The sewage treatment unit 3 discharges the separated air through the exhaust flow channel. It further includes an exhaust port 6 provided at the floor brush 2 or at one end of the body 1 close to the floor brush 2. The exhaust port 6 is communicated with the exhaust flow channel, and the exhaust port 6 blows the air flow towards the surface to be cleaned 7 near the floor brush 2.

[0029] If the exhaust port 6 is provided at the floor brush 2, then a longer exhaust flow channel needs to be set up, and it needs to pass through the place where the body 1 is swingably connected to the floor brush 2, and the structure will be more complex. Therefore, the present disclosure preferably sets the exhaust port 6 at one end of the body 1 close to the floor brush 2.

[0030] As Figure 1 、 2 shown, a rotating joint 5 is provided at the lower end of the body 1. The lower end of the rotating joint 5 is rotatably connected to the floor brush 2, and the upper end of the rotating joint 5 is connected to the lower end of the body 1. The exhaust port 6 at one end of the body 1 close to the floor brush 2 means that the exhaust port 6 is provided on the rotating joint 5.

[0031] Preferably, as Figure 5As shown, the arrows in the figure indicate the flow direction of the air current. A sewage treatment unit 3 and an air extraction unit 4 are provided in the body 1. The dirty flow channel enters the body 1 from the floor brush 2 through the rotating joint 5 and then enters the sewage treatment unit 3. The exhaust flow channel goes upward from the sewage treatment unit 3 to the air extraction unit 4, and then goes downward to this end of the body 1 near the floor brush 2 and is connected to the exhaust port 6. According to the general design idea of the prior art, the exhaust port 6 will be arranged near the air extraction unit 4 and directly discharged into the environment, and the exhaust flow channel will be very short. However, the present disclosure is completely different. The exhaust flow channel will be relatively complex and long, but it brings greater advantages.

[0032] In some embodiments, in order to better blow the air current towards the surface 7 to be cleaned near the floor brush 2 and for the sake of simple structure, as Figure 3 、 5 shown, the exhaust port 6 is provided with a wind guiding vane 8, and this wind guiding vane 8 guides the air current towards the surface 7 to be cleaned. As Figure 5 shown, the wind guiding vane 8 is arranged as an inclined sheet-like wind guiding vane 8.

[0033] In some embodiments, as Figure 5 shown, the wind guiding vane 8 guides the air current to be inclined downward relative to the surface 7 to be cleaned towards the surface 7 to be cleaned.

[0034] Figure 5 When in an upright state, then when working, the body 1 will be in an inclined state and be pushed by the user to drive the floor brush 2 to move. Then when the body 1 is inclined, the direction of the exhaust port 6 is close to the rear side of the floor brush 2. For this reason, the body 1 is provided with a handle 9, and the user holds the handle 9 to incline the body 1 to push the surface cleaning device to work.

[0035] The exhaust port 6 being inclined to point to the surface 7 to be cleaned is beneficial for the air current to be more gentle when contacting the surface 7 to be cleaned to reduce the impact noise.

[0036] In some embodiments, as Figure 2 、 3 、5 shown, the body 1 is provided with a handle 9, and a U-shaped groove 12 is provided at the rear side of the floor brush 2. The lower end of the U-shaped groove 12 is rotatably connected to the rotating joint 5. The exhaust port 6 includes a third outlet located at the rear side of the floor brush 2. The user holds the handle 9 to incline the body 1 to push the surface cleaning device to work. When the body 1 is inclined, the air current discharged from the third outlet blows towards the surface 7 where the U-shaped groove 12 is located. In this way, it is more beneficial to suck away the dirty sewage vapor discharged from the exhaust port 6 and it is not easy to leak.

[0037] In this example, as Figure 1 、 2 shown, the floor brush 2 is respectively provided with guide wheels 13 on both sides of the U-shaped groove 12, so that the floor brush 2 moves easily and the moving direction is stable.

[0038] In some embodiments, asFigure 2 , 3 As shown in FIGS. 5 and 6, the exhaust port 6 includes a first outlet 10 provided at the rear side of the floor nozzle 2 and a second outlet 11 provided downward. In this way, there is a greater exhaust volume. When the body 1 is used obliquely, the airflows of the first outlet 10 and the second outlet 11 both blow toward the surface to be cleaned 7 (such as a carpet), and the second outlet 11 is used as a third outlet.

[0039] When understanding the present disclosure, if necessary, the above structure may refer to other embodiments / attachments Figure 1 and is understood herein without further elaboration.

[0040] The above are only illustrative embodiments of the present invention. Therefore, all equivalent changes or modifications made to the structure, features, and principles described within the scope of the protection of this invention patent are included within the scope of the protection of this invention patent.

Claims

1. A surface cleaning device, comprising a body (1), a floor brush (2), a sewage treatment unit (3) and an air extraction unit (4). The body (1) is swingably connected to the floor brush (2). The floor brush (2) moves on a surface to be cleaned (7) for cleaning. The floor brush (2) sucks in dirt and sends it into the sewage treatment unit (3) through a dirt flow channel. The sewage treatment unit (3) discharges the separated air through an exhaust flow channel. It is characterized in that, It further includes an exhaust port (6) provided at the floor brush (2) or at one end of the body (1) close to the floor brush (2). The exhaust port (6) is in communication with an exhaust flow passage, and the exhaust port (6) blows air flow towards the surface (7) to be cleaned near the floor brush (2).

2. The surface cleaning device according to claim 1, characterized in that, A rotating joint (5) is provided at the lower end of the body (1). The lower end of the rotating joint (5) is rotatably connected to the floor brush (2), and the upper end of the rotating joint (5) is connected to the lower end of the body (1). The exhaust port (6) at one end of the body (1) close to the floor brush (2) means that an exhaust port (6) is provided on the rotating joint (5).

3. The surface cleaning device according to claim 1 or 2, characterized in that The exhaust port (6) is provided with a wind guiding vane (8), and the wind guiding vane (8) guides the air flow towards the surface (7) to be cleaned.

4. The surface cleaning device according to claim 3, wherein The wind guiding vane (8) guides the air flow towards the surface (7) to be cleaned in an inclined manner relative to the surface (7) to be cleaned in a downward direction.

5. The surface cleaning device according to claim 2, characterized in that, A sewage treatment unit (3) and an air extraction unit (4) are provided in the body (1). The dirty flow passage enters the body (1) from the floor brush (2) through the rotating joint (5), and then enters the sewage treatment unit (3). The exhaust flow passage goes upward from the sewage treatment unit (3) to the air extraction unit (4), and then goes downward to one end of the body (1) close to the floor brush (2) and is in communication with the exhaust port (6).

6. The surface cleaning device according to claim 5, wherein, The exhaust port (6) is inclinedly directed towards the surface (7) to be cleaned.

7. The surface cleaning device according to claim 6, wherein The body (1) is provided with a handle (9). The user holds the handle (9) to tilt the body (1) to push the surface cleaning device to work. When the body (1) is tilted, the direction of the exhaust port (6) is close to the rear side of the floor brush (2).

8. The surface cleaning device according to claim 1 or 2 or 5, characterized in that, The exhaust port (6) includes a first outlet (10) provided towards the rear side of the floor brush (2) and a second outlet (11) provided downward.

9. The surface cleaning device according to claim 2, wherein, The body (1) is provided with a handle (9). A U-shaped groove (12) is provided at the rear side of the floor brush (2). The U-shaped groove (12) is rotatably connected to the lower end of the rotating joint (5). The exhaust port (6) includes a third outlet located at the rear side of the floor brush (2). The user holds the handle (9) to tilt the body (1) to push the surface cleaning device to work. When the body (1) is tilted, the air flow discharged from the third outlet blows towards the surface (7) where the U-shaped groove (12) is located.

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