Cleaning equipment accessory and cleaning equipment
By designing a high-speed jet structure to create a pressure difference in the cleaning equipment accessories, the problems of heavy weight, high cost, and hair entanglement in the roller brush of handheld vacuum cleaners have been solved, achieving lightweight, low cost, and efficient cleaning.
Patent Information
- Application Number
- CN202511923846.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-18
- Publication Date
- 2026-02-24
AI Technical Summary
Existing handheld vacuum cleaner floor brush attachments are heavy, expensive, and prone to hair tangling, and the motor mechanism is susceptible to water ingress.
Design a cleaning equipment accessory that uses a motor mechanism to generate a high-speed jet of air to create a pressure difference. Through a dust hood and return pipe structure, it replaces the suction mode of the motor and floor brush accessory, omitting components such as the motor, electronic control, and roller brush. It uses airflow to generate suction to suck up garbage.
It reduces the weight and production cost of accessories, solves the problem of hair entanglement, eliminates the risk of water entering the motor, and improves cleaning efficiency.
Smart Images
Figure CN121549686A_ABST
Abstract
Description
Technical Field
[0001] This disclosure belongs to the field of cleaning equipment technology, specifically relating to a cleaning equipment accessory and a cleaning equipment. Background Technology
[0002] The main structure of a current handheld vacuum cleaner includes a floor brush attachment, a guide tube, a dust cup, and a motor. The motor generates a vacuum, creating airflow directed towards the motor through the floor brush attachment, guide tube, and dust cup. Dust and particulate contaminants are drawn into the suction port of the floor brush attachment by the mechanical force generated by the rotation of the brush. From there, they enter the dust cup through the guide tube for dust-air separation. After passing through a single-stage or multi-stage cyclone separator, some larger contaminants are retained in the dust cup, while the remaining contaminants continue to flow into the filter cotton, where they are almost entirely retained. Clean air then enters the fan and is discharged into the atmosphere through a HEPA filter.
[0003] Existing floor brush attachments contain components such as motors, electronic controls, and roller brushes, which have the disadvantages of being heavy and costly; in addition, when the floor brush attachment is in operation, there is a risk of hair getting tangled in the rotating roller brush.
[0004] The information disclosed in this background section is intended only to enhance understanding of the overall background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention
[0005] The purpose of this disclosure is to provide a cleaning equipment accessory that can reduce the weight and manufacturing cost of floor brush accessories, and also solve the problem that the roller brush in floor brush accessories is easily entangled with hair.
[0006] To achieve the above objectives, a specific embodiment of this disclosure provides the following technical solution: a cleaning equipment accessory, including a dust hood, a return pipe, and an air inlet pipe; the dust hood has a dust chamber inside, and the bottom surface of the dust hood has an opening communicating with the dust chamber; the return pipe communicates between the dust chamber and the dust cup of the cleaning equipment; the air inlet pipe includes a first air outlet located in the dust chamber, the first air outlet being adjacent to and facing the communication point between the return pipe and the dust chamber, so as to guide the gas in the dust chamber to flow to the return pipe; the air inlet end of the air inlet pipe is used to communicate with the air outlet end of the motor mechanism of the cleaning equipment.
[0007] In one or more embodiments of this disclosure, the air inlet pipe further includes a second air outlet located within the dust chamber, the second air outlet being disposed toward the opening on the bottom surface of the dust hood, and the sum of the gas flow rate discharged from the first air outlet and the gas flow rate discharged from the second air outlet being less than the gas flow rate in the return pipe.
[0008] In one or more embodiments of this disclosure, the air intake pipe includes a main pipe, a dust-generating pipe, and a drainage pipe. The dust-generating pipe and the drainage pipe are both located downstream of the main pipe and connected to the main pipe. The air intake end of the main pipe is connected to the air outlet end of the motor mechanism of the cleaning equipment. The first air outlet is located on the drainage pipe, and the second air outlet is located on the dust-generating pipe.
[0009] In one or more embodiments of this disclosure, a first flow valve is provided on the drainage pipe, and a second flow valve is provided on the dust generation pipe.
[0010] In one or more embodiments of this disclosure, the gas flow rate discharged from the first outlet is greater than the gas flow rate discharged from the second outlet.
[0011] In one or more embodiments of this disclosure, the average inner diameter of the dust-generating duct is smaller than the average inner diameter of the drainage duct, so that the gas flow resistance in the dust-generating duct is greater than the gas flow resistance in the drainage duct.
[0012] In one or more embodiments of this disclosure, both the dust-generating pipe and the drainage pipe are located within the dust chamber.
[0013] In one or more embodiments of this disclosure, the second air outlet is flat, and the length direction of the second air outlet is parallel to the plane where the bottom opening of the dust hood is located.
[0014] In one or more embodiments of this disclosure, there is a gap between the bottom surface of the dust hood and the cleaning target, and the dust chamber is connected to the outside through the gap.
[0015] In one or more embodiments of this disclosure, the bottom surface of the dust hood is provided with a protruding structure, and the end of the protruding structure facing away from the bottom surface of the dust hood can abut against the cleaning target, so that there is a gap between the bottom surface of the dust hood and the cleaning target.
[0016] In one or more embodiments of this disclosure, the inner diameter of the first air outlet gradually decreases along the airflow direction inside the first air outlet.
[0017] A specific embodiment of this disclosure also provides a cleaning device, including a dust cup mechanism, a motor mechanism, and cleaning device accessories; the dust cup mechanism is used to separate and collect garbage; the motor mechanism is used to generate airflow; as described above, the air inlet of the air inlet pipe is connected to the air outlet of the motor mechanism, and the air outlet of the return pipe is connected to the dust cup mechanism.
[0018] Compared to existing technologies, the cleaning equipment accessory disclosed herein, through its structural design, utilizes the high-speed jet generated by the airflow from the motor mechanism to create a pressure difference, thereby generating suction and drawing debris into the dust cup mechanism. This replaces the suction mode used in existing technologies where the motor mechanism and floor brush accessory work together, fundamentally eliminating the problem of water ingress into the motor mechanism. Furthermore, the cleaning equipment accessory of this disclosure does not include components such as a motor, electronic control system, or roller brush, which not only reduces the weight and production cost of the accessory but also fundamentally solves the problem of hair entanglement on the roller brush. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram showing the connection between the cleaning equipment accessory and the dust cup mechanism in one embodiment of this disclosure;
[0021] Figure 2 This is a partial cross-sectional view of a cleaning equipment accessory in one embodiment of the present disclosure;
[0022] Figure 3 This is a partial internal schematic diagram of a cleaning equipment accessory in one embodiment of the present disclosure;
[0023] Figure 4 This is a schematic diagram of the air intake pipe in another embodiment of the present disclosure.
[0024] Explanation of key figure labels:
[0025] 1. Dust hood; 11. Dust chamber; 12. Opening; 2. Return pipe; 3. Inlet pipe; 31. Main pipe; 32. Dust-generating pipe; 33. Drainage pipe; 34. First outlet; 35. Second outlet; 36. First flow valve; 37. Second flow valve; a. Dust cup mechanism. Detailed Implementation
[0026] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.
[0027] Therefore, the following detailed description of the embodiments of this disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.
[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0029] In the description of the embodiments of this disclosure, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly placed when the product of this application is used, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used to facilitate the description of this disclosure and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.
[0030] In the description of the embodiments of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0031] In the description of the embodiments disclosed herein, it should also be noted that the terms "first," "second," etc., used herein are not intended to specifically refer to any order or sequence, nor are they intended to limit this case; they are merely used to distinguish components or operations described using the same technical terms.
[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.
[0033] The core structure of a handheld vacuum cleaner mainly consists of components such as a floor brush attachment, a guide tube, a dust cup mechanism, and a motor mechanism. These components work together to form a highly efficient and compact dust collection system. As the core power source, the motor mechanism continuously generates a vacuum negative pressure during operation, thereby creating a directional airflow directed towards the motor mechanism throughout the entire airflow path—including inside the floor brush attachment, guide tube, and dust cup mechanism.
[0034] During operation, debris first enters the system through the air intake located at the front of the floor brush attachment. The floor brush attachment typically contains a high-speed rotating roller brush; the mechanical force generated by its rotation effectively lifts dust and debris from the cleaning target (such as carpets or floors) and guides them to the vicinity of the air intake. Under negative pressure, this lifted or loosened debris is drawn into the floor brush attachment along with the airflow. It is then transported via a guide tube to the dust cup mechanism for debris separation and collection. The filtered airflow then flows to the motor mechanism and is finally discharged into the external environment.
[0035] The structure currently has three main pain points: (1) The existing floor brush attachment contains components such as motor, electronic control, and roller brush, which makes the entire vacuum cleaner heavy and has high production costs; (2) When the floor brush attachment is working, the rotating roller brush has the risk of getting tangled with hair, which affects cleaning efficiency. If additional components are added to solve the problem of hair tangling, it will lead to increased costs and make the structure of the floor brush attachment more complicated; (3) Since the motor mechanism is designed for suction, when the floor brush attachment is cleaning garbage, there is a risk of water entering the motor mechanism when it encounters garbage containing some water or other liquids.
[0036] Therefore, to solve the above problems, this disclosure provides a cleaning equipment accessory, which can be considered a floor brush accessory. This cleaning equipment accessory, through its pipe design and the blowing of air into the dust hood and return pipe, forms a Venturi-like structure, thereby guiding the air flow from the dust hood to the return pipe, carrying the debris from the dust hood along with it, and ultimately into the dust cup mechanism. This method eliminates the motor found in existing floor brush accessories and replaces the suction mode used in the prior art where the motor mechanism works with the floor brush accessory, fundamentally eliminating the problem of water entering the motor mechanism. Furthermore, this cleaning equipment accessory does not include the motor, electronic control, roller brush, and other components found in existing floor brush mechanisms, which not only reduces the weight and production cost of the accessory but also fundamentally solves the problem of hair entanglement on the roller brush.
[0037] like Figures 1 to 3 As shown, a cleaning equipment accessory in one embodiment of this disclosure includes a dust hood 1, a return pipe 2, and an air inlet pipe 3. The dust hood 1 has a dust chamber 11, and its bottom surface has an opening 12 communicating with the dust chamber 11. The return pipe 2 connects the dust chamber 11 and the dust cup of the cleaning equipment. The air inlet pipe 3 includes a first air outlet 34 located within the dust chamber 11, adjacent to and facing the connection between the return pipe 2 and the dust chamber 11, to guide the gas in the dust chamber 11 towards the return pipe 2. The air inlet end of the air inlet pipe 3 is connected to the air outlet end of the motor mechanism of the cleaning equipment.
[0038] The bottom surface of the dust hood 1 covers the cleaning target (carpet, floor, etc.). The air inlet pipe 3 is connected to the air outlet of the motor mechanism, and the first air outlet 34 of the air inlet pipe 3 is located inside the dust chamber 11, near and facing the connection between the return pipe 2 and the dust chamber 11. This arrangement allows the first air outlet 34 to eject a high-speed airflow (jet) into the return pipe 2. According to Bernoulli's principle, the static pressure decreases where the fluid velocity increases. Therefore, this high-speed jet creates a significant local low-pressure zone around itself, especially in the area between the jet core and the inlet of the return pipe 2. The static pressure in this area is much lower than the atmospheric pressure in other parts of the dust chamber 11 and the external environment, thus forming a pressure gradient from the periphery to the jet core inside the dust chamber 11. Driven by this pressure difference, the gas in other areas of the dust chamber 11 is forcibly drawn towards the low-pressure zone and flows. The gas flow process in the dust chamber 11 will carry the dust and other debris on the cleaning target (carpet, floor, etc.) to the return pipe 2 with the airflow, and then flow to the dust cup mechanism a of the cleaning equipment after passing through the return pipe 2.
[0039] This process relies not only on basic pressure differential but also benefits from a strong "entrainment effect." As the high-speed jet advances, its boundary layer undergoes shearing action with the surrounding relatively stationary or slow-moving air. The jet "drags" the surrounding fluid in contact with it through viscous forces, causing them to move together. This results in the fluid at the jet's edge being continuously entrained and carried away, like a dynamic vacuum edge, constantly evacuating the material from that area, thereby further intensifying and maintaining the reduction in local pressure. This continuous entrainment effect geometrically amplifies the suction power in the low-pressure area, enabling the efficient introduction of surrounding media from a wider lateral and downward direction (i.e., the main space of the dust chamber 11 covering the cleaning target), resulting in excellent dust collection.
[0040] Of course, the bottom surface of the dust hood 1 is not sealed to the cleaning target (carpet, floor, etc.). Therefore, when the gas in the dust chamber 11 is sucked into the return pipe 2, the average pressure in the dust chamber 11 is lower than the outside atmospheric pressure. Under the action of the pressure difference, the outside gas will flow into the dust chamber 11 from the gap between the bottom surface of the dust hood 1 and the cleaning target, which can also prevent the dust in the dust chamber 11 from drifting to the outside.
[0041] The core concept of this disclosure is that, through structural design of the cleaning equipment accessory, it can utilize the high-speed jet generated by the air blowing of the motor mechanism to create a pressure difference, thereby generating suction and drawing debris into the dust cup mechanism a. This replaces the suction mode used in the prior art where the motor mechanism and floor brush accessory work together, fundamentally eliminating the problem of water ingress into the motor mechanism. Furthermore, the cleaning equipment accessory of this disclosure does not use components such as motors, electronic controls, or roller brushes, which not only reduces the weight and production cost of the accessory but also fundamentally solves the problem of hair entanglement on the roller brush.
[0042] like Figure 2 and Figure 3 As shown, the air inlet pipe 3 in this embodiment also includes a second air outlet 35 located inside the dust chamber 11. The second air outlet 35 is positioned facing the opening 12 on the bottom surface of the dust hood 1. The sum of the gas flow rate discharged from the first air outlet 34 and the gas flow rate discharged from the second air outlet 35 is less than the gas flow rate in the return pipe 2. The gas blown out of the second air outlet 35 can be blown onto the cleaning target covered by the dust hood 1, causing the debris on the cleaning target to be blown away, thus making it easier for it to be carried by the airflow and flow into the return pipe 2. The purpose of the sum of the gas flow rate discharged from the first air outlet 34 and the gas flow rate discharged from the second air outlet 35 being less than the gas flow rate in the return pipe 2 is to ensure that the pressure inside the dust chamber 11 is lower than the external pressure, so that external gas can continuously flow into the dust chamber 11 from the gap between the bottom surface of the dust hood 1 and the cleaning target, preventing the debris on the cleaning target from being blown out of the dust chamber 11 from the gap between the bottom surface of the dust hood 1 and the cleaning target by the gas blown out of the second air outlet 35.
[0043] In a specific scenario, let the gas flow rate in the return pipe 2 be Q1, the gas flow rate discharged from the first outlet 34 be Q2, the gas flow rate discharged from the second outlet 35 be Q3, and the gas flow rate from the outside flowing into the dust chamber 11 from the gap between the bottom surface of the dust hood 1 and the cleaning target be Q4. After the cleaning equipment has been working continuously for a period of time, Q1 = Q2 + Q3 + Q4, where the above discussion ignores the initial gas volume in the dust chamber 11.
[0044] Preferably, in this embodiment, the second air outlet 35 is flat, and the length direction of the second air outlet 35 is parallel to the plane where the bottom opening 12 of the dust hood 1 is located. The flat shape of the second air outlet 35 can increase the area that the second air outlet 35 can blow towards the cleaning target, so that more garbage on the cleaning target is blown away, thus enhancing the cleaning effect.
[0045] Specifically, in this embodiment, the air intake pipe 3 includes a main pipe 31, a dust-generating pipe 32, and a drainage pipe 33. Both the dust-generating pipe 32 and the drainage pipe 33 are located downstream of and connected to the main pipe 31. The air intake end of the main pipe 31 is connected to the air outlet end of the motor mechanism of the cleaning equipment. A first air outlet 34 is located on the drainage pipe 33, and a second air outlet 35 is located on the dust-generating pipe 32. Through this pipe design, one motor mechanism of the cleaning equipment can simultaneously supply air to the second air outlet 35 of the first air outlet 34, avoiding the increased weight and cost of the cleaning equipment caused by adding an extra motor mechanism. In other embodiments, the air intake pipe 3 may not include the second air outlet 35 and the dust-generating pipe 32.
[0046] According to Bernoulli's principle, the greater the fluid velocity, the greater the decrease in static pressure, thus increasing the pressure difference between the area at the first air outlet 34 and other areas within the dust chamber 11, resulting in greater suction. Therefore, when the air flow rate supplied by the motor mechanism is fixed, compared to the case where the gas flow rate discharged from the first air outlet 34 is equal to the gas flow rate discharged from the second air outlet 35, setting the gas flow rate discharged from the first air outlet 34 to be greater than that of the second air outlet 35 allows the flow velocity at the first outlet to be greater than in the above case, thereby increasing the suction and improving the dust collection effect of the cleaning equipment accessory of this disclosure.
[0047] In a specific example, under the condition that other conditions remain unchanged, the average inner diameter of the dust-generating pipe 32 can be made smaller than the average inner diameter of the drainage pipe 33, thereby making the gas flow resistance in the dust-generating pipe 32 greater than the gas flow resistance in the drainage pipe 33, thus achieving the effect that the gas flow rate discharged from the first outlet 34 is greater than the gas flow rate discharged from the second outlet 35.
[0048] like Figure 2 and Figure 3 As shown, along the airflow direction inside the first outlet, the inner diameter of the first outlet gradually decreases. This structure makes the effective cross-sectional area of the airflow discharged at the first outlet significantly smaller than the inner diameter of the upstream diversion pipe 33. Under the condition of constant volume flow, the throttling effect formed by the cross-sectional contraction significantly increases the flow velocity and dynamic pressure of the airflow discharged from the first outlet. In addition, the smooth contraction of the inner diameter helps to guide the airflow towards the center, reduce eddies and airflow separation, and improve the uniformity and directionality of the flow.
[0049] like Figure 4 As shown, in another specific embodiment, a first flow valve 36 is provided on the drainage pipe 33, and a second flow valve 37 is provided on the dust-generating pipe 32. This configuration allows for real-time control of the gas flow rates discharged from the first air outlet 34 and the second air outlet 35 via the first flow valve 36 and the second flow valve 37, thus adapting to different application scenarios. Preferably, the first flow valve 36 and the second flow valve 37 can be connected to the control module of the cleaning equipment to automatically control the opening and closing of the first flow valve 36 and the magnitude of their opening.
[0050] like Figure 2 and Figure 3 As shown, in this embodiment, both the dust-generating pipe 32 and the drainage pipe 33 are located inside the dust chamber 11. This arrangement can reduce the length of the entire air intake pipe 3, reduce material costs, and also reduce the space occupied by the external components of the dust-generating hood 1, which is beneficial to the miniaturization of the entire accessory.
[0051] In a specific application scenario, the bottom surface of the dust hood 1 is provided with a protruding structure (not shown in the figure). The end of the protruding structure facing away from the bottom surface of the dust hood 1 can abut against the cleaning target. The protruding structure is only to create a gap between the bottom surface of the dust hood 1 and the cleaning target. For example, when the cleaning target is a smooth ground surface, under the suction effect caused by the pressure difference between the dust chamber 11 and the outside, the bottom surface of the dust hood 1 may be tightly abutted against the smooth ground, which may cause the gap between the two to shrink or even seal, making it difficult for outside gas to enter the dust chamber 11. This leads to a further increase in the pressure difference inside the dust chamber 11, a decrease in gas density, and a reduction in the amount of gas in the area not blown by the gas blown out by the second air outlet 35. This reduces the amount of gas in that area that drives dust to flow to the return pipe 2, making it impossible for dust and other debris to be sucked into the return pipe 2. Therefore, the protruding structure can ensure that the gap formed between the bottom surface of the dust hood 1 and the cleaning target is maintained at a certain size, thereby ensuring that a certain amount of outside gas always enters the dust chamber 11 and that debris can be stably sucked into the return pipe 2.
[0052] A specific embodiment of this disclosure also provides a cleaning device, including a dust cup mechanism a, a motor mechanism, and cleaning device accessories; the dust cup mechanism a is used to separate and collect garbage; the motor mechanism is used to generate airflow; as described above, the air inlet of the air inlet pipe 3 is connected to the air outlet of the motor mechanism, and the air outlet of the return pipe 2 is connected to the dust cup mechanism a.
[0053] The main pipe 31 disclosed herein can also serve as a structural support and connection between the dust cover 1 and the motor mechanism, and has a certain mechanical strength.
[0054] The motor mechanism and dust cup mechanism a are common types of motor mechanisms and dust cup mechanisms in existing technology. The motor mechanism can also be considered as a fan mechanism.
[0055] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A cleaning equipment accessory, characterized in that, include: A dust hood has a dust chamber inside, and the bottom surface of the dust hood has an opening that communicates with the dust chamber; A return pipe connects the dust chamber and the dust cup of the cleaning equipment; The air inlet pipe includes a first air outlet located within the dust chamber. The first air outlet is adjacent to and faces the connection between the return pipe and the dust chamber to guide the gas in the dust chamber to flow towards the return pipe. The air inlet end of the air inlet pipe is used to connect with the air outlet end of the motor mechanism of the cleaning equipment.
2. The cleaning equipment accessory according to claim 1, characterized in that, The air inlet pipe also includes a second air outlet located inside the dust chamber. The second air outlet is configured to face the opening on the bottom surface of the dust hood. The sum of the gas flow rate discharged from the first air outlet and the gas flow rate discharged from the second air outlet is less than the gas flow rate in the return pipe.
3. The cleaning equipment accessory according to claim 2, characterized in that, The air intake pipe includes a main pipe, a dust-generating pipe, and a drainage pipe. The dust-generating pipe and the drainage pipe are both located downstream of the main pipe and connected to the main pipe. The air intake end of the main pipe is connected to the air outlet end of the motor mechanism of the cleaning equipment. The first air outlet is located on the drainage pipe, and the second air outlet is located on the dust-generating pipe.
4. The cleaning equipment accessory according to claim 3, characterized in that, The drainage pipe is equipped with a first flow valve, and the dust generation pipe is equipped with a second flow valve.
5. The cleaning equipment accessory according to claim 3, characterized in that, The gas flow rate discharged from the first outlet is greater than the gas flow rate discharged from the second outlet.
6. The cleaning equipment accessory according to claim 5, characterized in that, The average inner diameter of the dust-generating pipe is smaller than the average inner diameter of the drainage pipe, so that the gas flow resistance in the dust-generating pipe is greater than the gas flow resistance in the drainage pipe.
7. The cleaning equipment accessory according to claim 3, characterized in that, Both the dust-generating pipe and the drainage pipe are located inside the dust chamber.
8. The cleaning equipment accessory according to claim 2, characterized in that, The second air outlet is flat, and the length direction of the second air outlet is parallel to the plane where the bottom opening of the dust hood is located.
9. The cleaning equipment accessory according to claim 1, characterized in that, There is a gap between the bottom surface of the dust hood and the cleaning target, and the dust chamber is connected to the outside world through the gap.
10. The cleaning equipment accessory according to claim 9, characterized in that, The bottom surface of the dust hood is provided with a raised structure, and the end of the raised structure that is away from the bottom surface of the dust hood can abut against the cleaning target, so that there is a gap between the bottom surface of the dust hood and the cleaning target.
11. The cleaning equipment accessory according to claim 1, characterized in that, Along the direction of airflow inside the first air outlet, the inner diameter of the first air outlet gradually decreases.
12. A cleaning device, characterized in that, include: Dust cup mechanism, used to separate and collect waste; The motor mechanism is used to generate airflow; As described in any one of claims 1 to 11, the air inlet end of the air inlet pipe is connected to the air outlet end of the motor mechanism, and the air outlet end of the return pipe is connected to the dust cup mechanism.