Atomizing and spraying assembly and cleaning robot

Abstract

The utility model discloses an atomizing spraying assembly and a cleaning robot and relates to the technical field of intelligent cleaning equipment. The atomizing and spraying assembly comprises a water supply cavity, the water supply cavity is provided with a water spraying opening, a piezoelectric ceramic micropore atomizing piece is arranged at the water spraying opening, and a hydrophilic / water absorbing component with the hydrophilicity higher than that of the piezoelectric ceramic micropore atomizing piece is arranged on the water outlet face of the piezoelectric ceramic micropore atomizing piece and around the micropore area of the piezoelectric ceramic micropore atomizing piece. The device is used for attracting water molecules attached in the micropore area and guiding the water molecules to the outer side of the micropore area, so that the water molecules are prevented from being accumulated in the micropore area. According to the atomizing and spraying assembly, the hydrophilic / water absorbing part is arranged around the water outlet face of the piezoelectric ceramic micropore atomizing piece, and the problem of leakage and accumulation commonly existing in a traditional atomizing and spraying assembly is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent cleaning equipment, in particular to an atomizing spraying assembly and a cleaning robot. Background Art

[0002] A cleaning robot (such as a window cleaning robot) usually has a water spraying device in its body. Spraying water onto the glass surface through the water spraying device can better help remove dirt on the glass surface. Piezoelectric ceramic microporous atomizing sheets have been commonly used in various medical devices and humidifiers in the past, and have also been applied in cleaning robots in recent years. The water mist generated by atomization can evenly wet the glass surface. To make the device structure more compact and the volume smaller, most existing cleaning robots do not have a water supply pump or valve in the water supply pipeline, but rely on the self-pressure of the water in the water tank to supply water to the water spraying port. Due to the many micropores on the atomizing sheet arranged at the water spraying port, under the action of water pressure, even if the atomizing sheet does not work, water will leak from the micropores to the water outlet surface of the atomizing sheet, accumulate in its micropore area, block the micropores, hinder its normal water spraying, and affect the atomizing spraying effect. Summary of the Utility Model

[0003] One of the purposes of the utility model is to provide an atomizing spraying assembly that can reduce the accumulation of water leaking to the water outlet surface of the atomizing sheet in the micropore area.

[0004] To achieve the above purpose, the utility model adopts the following technical scheme: an atomizing spraying assembly, including a water supply cavity, the water supply cavity is provided with a water spraying port, a piezoelectric ceramic microporous atomizing sheet is arranged at the water spraying port, and a hydrophilic / water-absorbing component with stronger hydrophilicity than the piezoelectric ceramic microporous atomizing sheet is arranged around the micropore area of the water outlet surface of the piezoelectric ceramic microporous atomizing sheet, for attracting and guiding the water molecules attached in the micropore area to the outside of the micropore area, so as to prevent the water molecules from accumulating in the micropore area.

[0005] Further, the hydrophilic / water-absorbing component is arranged in a ring around the micropore area of the piezoelectric ceramic microporous atomizing sheet.

[0006] Further, the atomizing spraying assembly further includes a detachable upper shell and a lower shell, the water supply cavity is arranged on the upper shell, a spraying channel corresponding to the water spraying port of the water supply cavity is arranged on the lower shell, and the piezoelectric ceramic microporous atomizing sheet is arranged between the upper shell and the lower shell.

[0007] Further, the upper shell and the lower shell are connected and fixed through a snap connection structure.

[0008] Further, the spraying channel is in a horn shape.

[0009] Further, the hydrophilic / water-absorbing component is a water-absorbing cotton made of polyvinyl alcohol (PVA).

[0010] Another object of the present utility model is to provide a cleaning robot, which includes a body, a water tank disposed on the body, and the above-mentioned atomizing spraying assembly, and the water supply chamber is connected to the water tank.

[0011] In the atomizing spraying assembly of the present utility model, by arranging a hydrophilic / water-absorbing component around the water outlet surface of the piezoelectric ceramic microporous atomizing sheet, the leakage accumulation problem commonly existing in the traditional atomizing spraying assembly is improved. In this atomizing spraying assembly, the hydrophilic / water-absorbing component utilizes its hydrophilic property to actively attract and conduct the leaked water molecules in the microporous area, preventing them from accumulating at the micropores, thereby avoiding the blockage problem and ensuring the continuity and uniformity of water spraying. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a perspective view of the atomizing spraying assembly in the embodiment Figure 1 ;

[0013] Figure 2 is a perspective view of the atomizing spraying assembly in the embodiment Figure 2 ;

[0014] Figure 3 is an exploded view of the atomizing spraying assembly in the embodiment Figure 1 ;

[0015] Figure 4 is an exploded view of the atomizing spraying assembly in the embodiment Figure 2 ;

[0016] Figure 5 is a perspective view of the piezoelectric ceramic microporous atomizing sheet in the embodiment.

[0017] In the figure:

[0018] 1 - upper housing 1a - water supply chamber

[0019] 1a1 - water spraying port 2 - lower housing

[0020] 2a - spraying channel 3 - piezoelectric ceramic microporous atomizing sheet

[0021] 3a - metal sheet 3a1 - recessed part

[0022] 3b - silicone ring 4 - hydrophilic / water-absorbing component

[0023] 5 - connecting shell 5a - spraying port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to enable those skilled in the art to more clearly understand the concept of the present utility model, the following further describes it in conjunction with the embodiments and the drawings. Embodiment 1

[0025] As Figures 1 - 5 shown, this embodiment provides an atomizing spraying assembly, which includes a water supply chamber 1a. The water supply chamber 1a is provided with a water spraying port 1a1, and the water spraying port 1a1 is usually arranged at the lower end of the water supply chamber 1a so that the water in the water supply chamber 1a can supply water to the water spraying port 1a1 through its own pressure. Similar to the existing atomizing spraying assemblies, a piezoelectric ceramic microporous atomizing sheet 3 is also arranged at the water spraying port 1a1 in this embodiment for converting the water flow into a delicate atomizing effect. Different from this, around the microporous area of the water outlet surface of the piezoelectric ceramic microporous atomizing sheet 3 in this embodiment, a hydrophilic / water-absorbing component 4 with stronger hydrophilicity (the hydrophilicity is stronger than that of the piezoelectric ceramic microporous atomizing sheet 3) is arranged. The hydrophilic / water-absorbing component 4 can attract and guide the water molecules that leak from the micropores and adhere to the surface of the atomizing sheet 3, and transfer them to the outside of the microporous area. This avoids the accumulation of water molecules in the microporous area, thereby preventing the micropores from being blocked and ensuring the continuity and uniformity of the atomizing spraying process.

[0026] In this embodiment, the hydrophilic / water-absorbing component 4 includes two types: a hydrophilic component and a water-absorbing component, and they are both designed to reduce the leakage accumulation in the microporous area of the water outlet surface of the piezoelectric ceramic microporous atomizing sheet 3. The function of the hydrophilic component is to attract the water molecules attached in the microporous area to the outside of the microporous area through its hydrophilic property. Although this reduces the accumulation inside the microporous area, it may cause the water molecules to accumulate outside the microporous area, thereby forming water droplets and dripping. Different from the hydrophilic component, the water-absorbing component not only has the ability to attract the water molecules to the outside of the microporous area, but also has the property of absorbing these water molecules. This means that the water-absorbing component can prevent the water molecules from accumulating on the surface of the atomizing sheet 3, thereby effectively reducing the formation and dripping of water droplets, and further improving the performance and reliability of the atomizing spraying assembly.

[0027] In this embodiment, the material selection of the hydrophilic / water-absorbing component 4 is very crucial. Among them, the absorbent cotton made of polyvinyl alcohol (PVA) is regarded as a preferred material because of its excellent hydrophilicity and water absorption. This absorbent cotton can not only effectively attract and guide the water molecules leaking from the microporous area to the outside, but also quickly absorb these water molecules to prevent them from accumulating on the surface of the atomizing sheet 3, thereby reducing the formation and dripping of water droplets. Of course, the hydrophilic / water-absorbing component 4 can also select other materials with similar or better performance according to requirements.

[0028] In this embodiment, the hydrophilic / water-absorbing component 4 is in a ring shape so as to be easily fixed around the microporous area on the water outlet surface of the piezoelectric ceramic microporous atomization sheet 3. This ring structure not only facilitates assembly but also can effectively cover the outer side of the microporous area, thereby maximizing its hydrophilic and water-absorbing effects. Although the ring structure is the recommended configuration, the hydrophilic / water-absorbing component 4 can also adopt other shapes or structures according to specific requirements or application scenarios. For example, the annular sheet structure can simplify the manufacturing and assembly processes while ensuring a tight fit between the component and the atomization sheet 3.

[0029] As Figure 3 , 4 shown, the atomization spraying assembly of this embodiment includes two detachably connected housings, such as the upper housing 1 and the lower housing 2, which are fixed through a snap connection structure for easy quick disassembly and maintenance. The upper housing 1 is provided with a water supply cavity 1a, while the lower housing 2 is provided with a spraying channel 2a corresponding to the water spraying port 1a1. The piezoelectric ceramic microporous atomization sheet 3 is installed between the two housings, with its upper end connected to the water spraying port 1a1 of the water supply cavity 1a and its lower end connected to the spraying channel 2a. The hydrophilic / water-absorbing component 4 is fixed to the lower end of the piezoelectric ceramic microporous atomization sheet 3, and through the clamping action of the two housings, it is positioned between the atomization sheet 3 and the spraying channel 2a. Such a layout ensures that the water in the water supply cavity 1a flows towards the water spraying port 1a1 under its own pressure, forms atomized water through the vibration of the atomization sheet 3, and then diffuses outward through the spraying channel 2a.

[0030] To improve the spraying efficiency, the spraying channel 2a can be set in a horn shape, which helps the diffusion of the water mist. At the same time, the water molecules leaking to the water outlet surface of the piezoelectric ceramic microporous atomization sheet 3 due to water pressure can be quickly attracted by the hydrophilic / water-absorbing component 4 and moved to the outer side of the microporous area, effectively avoiding the accumulation in the microporous area and ensuring the continuity and uniformity of water spraying.

[0031] In addition, a connecting shell 5 is connected to the bottom of the lower housing 2, and a spraying port 5a with a size larger than the spraying channel 2a is provided thereon. The spraying port 5a is directly connected to the spraying channel 2a and is designed in a horn shape structure, as can be seen in Figure 1 . This structure not only optimizes the diffusion effect of the water mist but also significantly improves the spraying efficiency. When the water mist flows through the spraying channel 2a to the spraying port 5a, due to the horn shape design of the spraying port 5a, the water mist can be further expanded, thereby achieving a more uniform and extensive spraying coverage area.

[0032] The structure and principle of the piezoelectric ceramic microporous atomization sheet 3 will be briefly described below. The piezoelectric ceramic microporous atomization sheet 3 is composed of a metal sheet 3a and a ceramic vibration sheet. The metal sheet 3a is usually made of stainless steel, and one or more water outlet holes are provided in the center. A concave portion 3a1 is provided in the center of the metal sheet 3a. When viewed from the bottom up of the metal sheet 3a, the concave portion 3a1 appears convex, and the water outlet holes are provided on this concave portion 3a1. See Figure 5 . The ceramic vibration sheet is annularly arranged around the metal sheet 3a and is adhered to the metal sheet 3a by glue. The ceramic vibration sheet can be connected to a power source through an electronic wire and generates high-frequency vibration after being energized. Working principle: The high-frequency vibration causes cavitation of water molecules at the water outlet holes. After accumulation, tiny water mist particles are formed and ejected from the water outlet holes. The hydrophilic / water-absorbing component 4 surrounds the outside of the concave portion 3a1 of the metal sheet 3a, and its hydrophilicity is better than that of the metal sheet 3a. When water leaks to the lower end of the concave portion 3a1, the hydrophilic / water-absorbing component 4 can effectively attract and transfer the leaked water to the outside, preventing water from accumulating at the water outlet holes, thereby avoiding affecting the spraying effect. In addition, a silicone rubber ring 3b can be provided on the outer periphery of the metal sheet 3a to enhance fixation and provide a good sealing effect. It should be noted that the piezoelectric ceramic microporous atomization sheet 3 in this embodiment is a commercially available product, and the structure and principle of the piezoelectric ceramic microporous atomization sheet 3 are both prior arts. The improvement of this embodiment does not lie in this, so it will not be elaborated here. Embodiment 2

[0033] This embodiment provides a cleaning robot. Similar to existing cleaning robots, it also includes a body and components such as a suction module, a cleaning element, a driving module, and a controller installed on the body. Among them, the body can be adsorbed on the surface to be cleaned (such as a window glass) under the negative pressure formed by the suction module. The cleaning element can be a cleaning turntable with a rotary cloth. The cleaning element rotates on the surface to be cleaned under the drive of the driving module to perform the cleaning function. The cleaning robot can alternately drive two cleaning elements to rotate through the driving module to achieve a twisting walking mode of the machine. The above suction module includes but is not limited to a negative pressure fan or a vacuum pump, and the driving module can be a motor (of course, a speed reducer can also be connected to the output end of the motor according to needs). In addition, since the air duct and control circuit of the cleaning robot involved in this embodiment are similar to those of existing cleaning robots, for the purpose of simplifying the description, the above content will not be elaborated.

[0034] Different from existing cleaning robots, the cleaning robot in this embodiment further includes a water tank provided on the body and the atomizing spraying assembly of Embodiment 1. The water supply cavity 1a is connected to the water tank (the two can be integrated or connected by a pipeline). The water spraying port 1a1 of the water supply cavity 1a can face the side of the body contacting the surface to be cleaned, so as to ensure that the water mist can directly act on the target area. When the cleaning robot works, the water tank is configured to be located at the upper end of the body, and the water pressure in the water tank itself is relied on to supply water to the water spraying port 1a1. When the water in the water tank flows to the water supply cavity 1a, the piezoelectric ceramic microporous atomizing sheet 3 blocks it and makes it stay there. When the piezoelectric ceramic microporous atomizing sheet 3 works, the water in the water supply cavity 1a is converted into water mist and directly sprayed out through the spraying channel 2a to wet the glass surface. Particularly, due to the action of water pressure, a small amount of water will inevitably leak to the lower end of the piezoelectric ceramic microporous atomizing sheet 3. At this time, the hydrophilic / water-absorbing component 4 plays its role, attracting and transferring these leaked water molecules to the outside of the microporous area, effectively avoiding the accumulation in the microporous area, ensuring the continuity and uniformity of water spraying, and thus improving the cleaning effect.

[0035] The above embodiments are preferred implementation solutions of the present invention. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims

1. An atomizing spray assembly, comprising a water supply chamber (1a), wherein the water supply chamber (1a) is provided with a water spray port (1a1), wherein a piezoelectric ceramic microporous atomizing sheet (3) is provided at the water spray port (1a1), characterized in that: The water outlet surface of the piezoelectric ceramic microporous atomizing sheet (3) is provided with a hydrophilic / water-absorbing component (4) having a stronger hydrophilicity than the piezoelectric ceramic microporous atomizing sheet (3) around its microporous area, and is used to attract and guide water molecules attached to the microporous area to the outside of the microporous area, so as to avoid the accumulation of water molecules in the microporous area.

2. The atomizing spray assembly according to claim 1, characterized in that: The hydrophilic / water-absorbing component (4) is arranged in a ring shape around the microporous area of ​​the piezoelectric ceramic microporous atomizing sheet (3).

3. The atomizing spray assembly according to claim 1, characterized in that: It also comprises an upper shell (1) and a lower shell (2) which are detachably connected, the water supply chamber (1a) being arranged on the upper shell (1), the lower shell (2) being provided with a spraying channel (2a) corresponding to the water spraying port (1a1) of the water supply chamber (1a), and the piezoelectric ceramic microporous atomizing sheet (3) being arranged between the upper shell (1) and the lower shell (2).

4. The atomizing spray assembly according to claim 3, characterized in that: The upper shell (1) and the lower shell (2) are connected and fixed via a snap-on connection structure.

5. The atomizing spray assembly according to claim 3, characterized in that: The spray channel (2a) is trumpet-shaped.

6. The atomizing spray assembly according to any one of claims 1 to 5, characterized in that: The hydrophilic / water-absorbent component (4) is water-absorbent cotton made of polyvinyl alcohol.

7. A cleaning robot, comprising a body and a water tank disposed on the body, characterized in that: It also comprises an atomizing spray assembly as claimed in any one of claims 1 to 6, which is arranged on the machine body, and the water supply chamber (1a) is connected to a water tank.

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