Negative pressure structure of window cleaning machine
By setting a separator in the negative pressure structure of the window cleaning machine to symmetrically separate the air duct and air inlet, the problem of uneven adsorption force of the cleaning disc is solved, and the cleaning effect is made uniform.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN JIULI PRECISION MOLD CO LTD
- Filing Date
- 2025-05-10
- Publication Date
- 2026-04-10
AI Technical Summary
Existing window cleaning machines suffer from uneven cleaning results due to the uneven adhesion of the cleaning discs.
The negative pressure air duct is divided into a symmetrical first air duct and a second air duct by using a separator strip, and the air inlet is divided into a symmetrical first air inlet and a second air inlet, so that the pressure of the negative pressure fan can be more evenly distributed to the two air ducts, thereby making the adsorption force of the two cleaning discs tend to be equal.
This ensures that both cleaning discs exert the same cleaning force on the glass, resulting in a more uniform cleaning effect.
Smart Images
Figure CN224099247U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to window cleaning machine technical field especially relates to a window cleaning machine's negative pressure structure. BACKGROUND
[0002] The window cleaning machine can realize adsorption on the surface of glass by forming negative pressure at the cleaning disc, then moves on the surface of glass by intermittently driving the two cleaning discs to rotate, and completes the cleaning of the glass window by the movement of the cleaning disc on the surface of the glass window, so it is particularly important that the window cleaning robot can be stably adsorbed on the surface of glass, and the current window cleaning machine is prone to the problem of uneven cleaning due to different adsorption forces of the two cleaning discs. SUMMARY
[0003] The utility model discloses a window cleaning machine's negative pressure structure to solve the above -mentioned problem.
[0004] To achieve this purpose, the utility model adopts the following technical scheme:
[0005] A kind of window cleaning machine's negative pressure structure, including shell and negative pressure fan, the shell includes upper shell, middle shell and lower shell, the upper shell is installed to the lower shell, the upper shell and the lower shell are enclosed the internal space of window cleaning machine between;The middle shell is arranged in the internal space, the middle shell is installed to the lower shell, and negative pressure air duct is formed between the middle shell and the lower shell, and the lower shell is equipped with negative pressure air port at the both ends of the negative pressure air duct;The middle shell is equipped with fan cavity, and air inlet is arranged in the middle of fan cavity, and the negative pressure fan is installed in the fan cavity;The top surface of the lower shell is equipped with partition strip, the partition strip is located between two negative pressure air ports, and the partition strip divides the negative pressure air duct into symmetrical first air duct and second air duct, and the partition strip is attached to the bottom surface of the middle shell, and the air inlet is divided into symmetrical first air inlet and second air inlet.
[0006] Preferably, the middle part of the partition strip extends into the air inlet.
[0007] Preferably, the middle shell is recessed to the lower shell to form the fan cavity.
[0008] Preferably, the outer wall corner of the fan cavity is all arc transition.
[0009] Preferably, the upper shell is equipped with a plurality of air outlets.
[0010] Preferably, the inside of the lower shell is equipped with a fence, the middle shell is installed above the fence, and the space surrounded by the middle shell and the fence forms the negative pressure air duct.
[0011] Preferably, the top of the enclosure is provided with a first step, and the bottom of the middle shell is provided with a second step matched with the first step.
[0012] The embodiment of the utility model has the following beneficial effects: the first air duct and the second air duct are symmetrical, and the volume and the air flow resistance of the first air duct and the second air duct are almost same; in addition, the partition strip divides the air inlet into the first air inlet and the second air inlet, the first air inlet and the second air inlet are communicated with the first air duct and the second air duct respectively, the negative pressure fan extracts the air of the first air duct through the first air inlet and extracts the air of the second air duct through the second air inlet, the negative pressure of the fan cavity is more evenly distributed to the first air duct and the second air duct due to the symmetry of the first air inlet and the second air inlet, so that the negative pressure of the first air duct and the second air duct is more close, and the suction force of the two cleaning discs is equal, the cleaning force of the two cleaning discs on the glass is same when cleaning the glass, so that the cleaning effect is more uniform. BRIEF DESCRIPTION OF DRAWINGS
[0013] The drawings further illustrate the utility model, but the contents in the drawings do not constitute any limitation to the utility model.
[0014] Figure 1 It is the three-dimensional structure schematic diagram of one embodiment of the utility model;
[0015] Figure 2 It is the explosion structure schematic diagram of one embodiment of the utility model;
[0016] Figure 3 It is the sectional structure schematic diagram of one embodiment of the utility model;
[0017] In the drawings: 11 - shell, 111 - upper shell, 1111 - air outlet, 112 - middle shell, 1121 - second step, 1122 - fan cavity, 1123 - air inlet, 113 - lower shell, 1131 - enclosure, 1132 - first step, 1133 - negative pressure air inlet, 1135 - partition strip, 114 - negative pressure air duct, 12 - negative pressure fan, 2 - cleaning disc. DETAILED DESCRIPTION
[0018] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present application, and are not to be understood as limiting the present application. In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely intended to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.
[0019] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or electrically connected or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0020] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical direction of the first feature above and obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the vertical direction of the first feature below and obliquely below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0021] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.
[0022] The technical solutions of the present application are further illustrated below by specific embodiments in conjunction with the drawings.
[0023] A negative pressure structure of a window cleaning machine of the present embodiment is shown in Figures 1-3 Fig. 1, which comprises a shell 11 and a negative pressure fan 12. The shell 11 comprises an upper shell 111, a middle shell 112 and a lower shell 113. The upper shell 111 is installed on the lower shell 113, and an internal space of the window cleaning machine is formed between the upper shell 111 and the lower shell 113. The middle shell 112 is arranged in the internal space, and is installed on the lower shell 113. A negative pressure air duct 114 is formed between the middle shell 112 and the lower shell 113. The lower shell 113 is provided with negative pressure air outlets 1133 at both ends of the negative pressure air duct 114. The middle shell 112 is provided with a fan cavity 1122, and an air inlet hole 1123 is arranged in the middle of the fan cavity 1122. The negative pressure fan 12 is installed in the fan cavity 1122. The top surface of the lower shell 113 is provided with a partition strip 1135, which is located between the two negative pressure air outlets 1133 and separates the negative pressure air duct 114 into symmetrical first and second air ducts. The partition strip 1135 is attached to the bottom surface of the middle shell 112 and separates the air inlet hole 1123 into symmetrical first and second air inlet holes 1123.
[0024] The utility model discloses a partition strip 1135 is arranged between middle shell 112 and lower shell 113 innovatively, and the negative pressure air duct 114 is cut off into symmetrical first air duct and second air duct through partition strip 1135, it needs to point out, first air duct and second air duct can be axial symmetry, also can be central symmetry, this place does not make specific limitation, through the negative pressure air duct 114 is separated into symmetrical first air duct and second air duct, can make the volume and airflow resistance of first air duct and second air duct be almost same, in addition, partition strip 1135 still separates into two parts of symmetrical air inlet hole 1123, when negative pressure fan 12 forms negative pressure in fan cavity 1122, negative pressure fan 12 removes the air in negative pressure air duct 114 through air inlet hole 1123, and air inlet hole 1123 is separated into symmetrical first air inlet hole 1123 and second air inlet hole 1123 through partition strip 1135, can be understood, first air inlet hole 1123 and second air inlet hole 1123 are communicated with first air duct and second air duct respectively, and negative pressure fan 12 extracts the air of first air duct through first air inlet hole 1123, and extracts the air of second air duct through second air inlet hole 1123, because air inlet hole 1123 is separated into two symmetrical first air inlet hole 1123 and second air inlet hole 1123, therefore, the negative pressure in fan cavity 1122 can be more evenly distributed to first air duct and second air duct, so that the negative pressure formed in first air duct and second air duct is more close, and the adsorption force of two cleaning discs 2 can tend to be equal, when cleaning glass, the cleaning force of two cleaning discs 2 to glass is same, so that the cleaning effect is more uniform.
[0025] Further, as shown in Figure 3 The middle part of the partition strip 1135 extends into the air inlet hole 1123.
[0026] When negative pressure fan 12 works, the external air enters first air duct and second air duct respectively from two negative pressure air inlets 1133, and flows into fan cavity 1122 along opposite directions, when the two air streams collide, a larger pressure loss is generated, therefore, by extending the partition strip 1135 into the air inlet hole 1123, the direct collision of the two air streams can be avoided, and a certain flow guiding effect can be achieved, so that the air entering from the two negative pressure air inlets 1133 can flow upwards along the partition plate and be removed by negative pressure fan 12, thereby reducing the pressure loss and the load of negative pressure fan 12.
[0027] Further, the middle shell 112 is recessed towards the lower shell 113 to form the fan cavity 1122.
[0028] By such arrangement, the fan cavity 1122 is recessed downwards to utilize the space in the negative pressure passage, so that the space of the window cleaning machine is more compact, and the structure is more compact.
[0029] Further, the outer wall corner of the fan cavity 1122 is a circular arc transition.
[0030] When the air in the negative pressure channel flows towards the air inlet 1123, since the fan cavity 1122 intrudes into the inside of the negative pressure channel, part of the air will flow along the outer wall of the fan cavity 1122. By setting the corner of the outer wall of the fan cavity 1122 as a circular arc transition, the air flow can be guided, thereby reducing the loss of air pressure.
[0031] Further, the upper shell 111 is provided with a plurality of air outlets 1111.
[0032] The air in the negative pressure channel is extracted by the negative pressure fan 12 and enters the space between the middle shell 112 and the upper shell 111, so the air in the space needs to be discharged to the outside to enable the negative pressure fan 12 to continuously extract the air in the negative pressure channel to form a negative pressure. Therefore, the upper shell 111 is provided with a plurality of air outlets 1111 to enable the space between the middle shell 112 and the upper shell 111 to communicate with the outside space of the window cleaning machine, so that the air extracted by the negative pressure fan 12 can be quickly discharged to the outside of the window cleaning machine.
[0033] Further, as shown in Figure 2 and Figure 3 The inside of the lower shell 113 is provided with a fence 1131, the middle shell 112 is installed above the fence 1131, and the space surrounded by the middle shell 112 and the fence 1131 forms the negative pressure channel 114.
[0034] Further, the top of the fence 1131 is provided with a first step 1132, and the bottom of the middle shell 112 is provided with a second step 1121 matched with the first step 1132.
[0035] The middle shell 112 and the fence 1131 are matched to form the negative pressure channel, and the first step 1132 and the second step 1121 are matched between the middle shell 112 and the fence 1131 to increase the contact area between the middle shell 112 and the fence 1131, thereby increasing the air tightness and further reducing the load of the negative pressure fan 12.
[0036] In the description of the present specification, the description of the terms "one embodiment", "certain embodiments", "illustrative embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.
[0037] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for explaining the principles of the present application, and cannot be interpreted as limiting the protection scope of the present application in any way. Based on the explanations herein, other specific embodiments of the present application can be conceived by those skilled in the art without creative labor, and these equivalent variations or replacements are all included in the scope defined by the claims of the present application.
Claims
1. A negative pressure structure of a window cleaning machine, characterized by comprising: The window cleaning machine comprises a shell and a negative pressure fan, the shell comprises an upper shell, a middle shell and a lower shell, the upper shell is installed on the lower shell, and an internal space of the window cleaning machine is formed between the upper shell and the lower shell; the middle shell is arranged in the internal space, the middle shell is installed on the lower shell, a negative pressure air duct is formed between the middle shell and the lower shell, and negative pressure air outlets are arranged at both ends of the negative pressure air duct; the middle shell is provided with a fan cavity, an air inlet hole is arranged in the middle of the fan cavity, and the negative pressure fan is installed in the fan cavity; a partition strip is arranged on the top surface of the lower shell, the partition strip is located between the two negative pressure air outlets, the negative pressure air duct is divided into symmetrical first and second air ducts by the partition strip, the partition strip is attached to the bottom surface of the middle shell, and the air inlet hole is divided into symmetrical first and second air inlet holes by the partition strip.
2. The negative pressure structure of a window cleaning robot according to claim 1, wherein The middle part of the partition strip extends into the air inlet hole.
3. The negative pressure structure of a window cleaning robot according to claim 1, wherein The middle shell is recessed towards the lower shell to form the fan cavity.
4. The negative pressure structure of a window cleaning robot according to claim 3, wherein The outer wall of the fan cavity is circularly arc-shaped at the corner.
5. The negative pressure structure of a window cleaning robot according to claim 1, wherein The upper shell is provided with a plurality of air outlets.
6. The negative pressure structure of a window cleaning robot according to claim 1, wherein The lower shell is internally provided with a surrounding fence, the middle shell is installed above the surrounding fence, and the space surrounded by the middle shell and the surrounding fence forms the negative pressure air duct.
7. The negative pressure structure of a window cleaning robot according to claim 6, wherein The top of the surrounding fence is provided with a first step, and the bottom of the middle shell is provided with a second step matched with the first step.