A system for cleaning a recovery path of a suction cleaner and a suction cleaner

Abstract

The present disclosure provides a system for cleaning a suction cleaner recycling path, comprising a first part and a second part connected detachably, the first part having a working component, the second part having the suction cleaner recycling path, the first part being provided with a first water path and a first air path, the second part being provided with a water path switching valve, a second water path and a second air path, the second water path being provided with a control valve for switching the second water path, an inlet of the water path switching valve being communicated with the second water path, the water path switching valve having a first outlet and a second outlet, the water path switching valve having two states controlled by whether the first part is connected with the second part or not; the system does not need to set a diverter slider to switch the water path switching valve, i.e. is not limited by the diverter slider, and is convenient for cleaning the working component and the suction cleaner recycling path after the working component; and a suction cleaner using the system is also disclosed.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, specifically to a system and a suction cleaner for cleaning the recovery path of a suction cleaner. Background Technology

[0002] The suction cleaner referred to in this disclosure is a surface cleaning device, such as the surface cleaning device disclosed in CN214906478U. It includes a base, a suction source, a clean water tank, and a wastewater tank. The suction source, clean water tank, and wastewater tank are all installed on the base to form the main unit. It also includes accessories (common accessories are brush heads). The accessories are connected to the main unit via a flow channel, which is mainly a flexible hose. The flexible hose has good freedom of movement, which makes it convenient for the user to operate the accessories to clean the surface to be cleaned. The accessories can spray the cleaning liquid from the clean water tank. Furthermore, the accessories are equipped with a switch, which is operated by the user to control the timing of the spraying of the cleaning liquid. When cleaning the surface to be cleaned, if the stains are difficult to remove, the user can operate the switch to spray the cleaning liquid in a directional manner. After the cleaning liquid has soaked the stains for a while, the user operates the accessories to scrape the stains. At the same time, the suction source sucks in the mixture of cleaning liquid and stains together into the wastewater tank, and after separation by a separator, the filtered clean air is discharged into the environment.

[0003] The aforementioned suction cleaner, also known as a deep cleaner, can be described in the following structure: It includes a fluid delivery system for delivering cleaning fluid to the surface to be cleaned and a fluid recovery system for extracting used cleaning fluid and debris (which may include dirt, dust, stains, grime, hair, and other debris) from the surface. The fluid delivery system typically includes one or more fluid supply tanks for storing a certain amount of cleaning fluid, a fluid dispenser for applying the cleaning fluid to the surface to be cleaned, and a fluid supply conduit for delivering the cleaning fluid from the fluid supply tank to the fluid dispenser. An agitator may be provided to agitate the cleaning fluid on the surface. The fluid recovery system typically includes a recovery tank, a nozzle adjacent to the surface to be cleaned and in fluid communication with the recovery tank via a working air conduit, and a suction source in fluid communication with the working air conduit to draw cleaning fluid from the surface to be cleaned through the nozzle and the working air conduit to the recovery tank. Some household suction cleaners use accessories (e.g., hoses, sticks, and other cleaning tools) for cleaning operations. Hose, sticks, and other cleaning tools can be configured for fluid delivery and fluid recovery.

[0004] As can be seen from the above, the fluid recovery system will mainly come into contact with and store dirt, thus the fluid recovery system is relatively dirty. The main part that needs cleaning is the suction cleaner's recovery path, such as the hose, and a better structure is one that can achieve self-cleaning. In the prior art, to achieve the aforementioned function, there is a solution, such as the system for cleaning the suction cleaner's recovery path and the suction cleaner's accessory disclosed in CN209750919U, which has also been granted in the United States. This solution uses a water path switching valve (diverter valve) installed in the housing of the accessory, and a diverter slider installed in the housing. By operating the diverter slider, the water path switching valve switches between a first flow channel and a second flow channel. The first flow channel is connected to the first spray hole in the working state, and the second flow channel is connected to the second spray hole in the self-cleaning state, and the second spray hole... The liquid orifice is located at the front end of the nozzle air intake, so the second flow channel is relatively long. Since the diverter slider needs to be able to actuate the water circuit switching valve, and the user also needs to operate the diverter slider, considering the user's operating needs and the coordination between the diverter slider and the water circuit switching valve, it is necessary to set a relatively long first flow channel and a relatively long second flow channel. In particular, in order to clean the suction path more completely, a longer second flow channel is required. The longer the working part extends, the longer the required second flow channel becomes. However, a longer second flow channel increases the risk of dirt accumulation or blockage. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and propose a system for cleaning the retrieval path of a suction cleaner, which does not require the setting of a diverter slider to switch the water circuit switching valve, that is, it is not limited by the diverter slider, and at the same time facilitates both cleaning of the working parts and the retrieval path of the suction cleaner after cleaning the working parts.

[0006] Compared to existing technologies, this invention proposes a system for cleaning the retrieval path of a suction cleaner, comprising a detachably connected first part and a second part. The first part has a working component, and the second part has a suction cleaner retrieval path. The first part is provided with a first water passage and a first air passage for the working component to operate. The second part is provided with a water passage switching valve, a second water passage, and a second air passage. The second water passage is provided with a control valve for opening and closing the second water passage. The inlet of the water passage switching valve is connected to the second water passage. The water passage switching valve has a first outlet and a second outlet. The water passage switching valve has two states controlled by whether the first part and the second part are connected or not. The two states are: the first state after the first part and the second part are connected, in which the second water passage is connected to the first water passage through the first outlet, and the second outlet is closed; and the second state after the first part and the second part are separated, in which the second water passage is disconnected from the first water passage, the first outlet is closed, and the second water passage is connected to the second air passage through the second outlet.

[0007] In some embodiments, the front of the first part has a working component, the rear of the first part is detachably connected to the front of the second part, and the water circuit switching valve is controlled by whether the first part and the second part are connected and has two states, meaning that the water circuit switching valve is controlled by whether the rear of the first part and the front of the second part are connected and has two states.

[0008] In some embodiments, the first part has a male end, which has two control ends, namely a first control end and a second control end. The water circuit switching valve has a female end, which has a first valve core and a second valve core. The first valve core is used to control the opening and closing of the first outlet, and the second valve core is used to control the opening and closing of the second outlet. After the male end and the female end are engaged, the first control end actuates the first valve core to open the first outlet so that the second water circuit is connected to the first water circuit. The second control end actuates the second valve core to close the second outlet so that the second water circuit is not connected to the second air circuit. After the male end and the female end are separated, the first valve core resets and closes the first outlet, and the second valve core resets and opens the second outlet so that the second water circuit is connected to the second air circuit.

[0009] In some embodiments, the male end has two control ends, namely a first protrusion and a second protrusion, and the female end is provided with a first mating hole and a second mating hole respectively. The first mating hole is provided with a first valve core, and the second mating hole is provided with a second valve core. After the male end and the female end are mated, the first protrusion is inserted into the first mating hole and pushes the first valve core, which will open the first outlet to make the second water passage connected to the first water passage. The second protrusion is inserted into the second mating hole and pushes the second valve core, which will move and close the second outlet to make the second water passage disconnected from the second air passage. After the male end and the female end are separated, the first valve core resets and closes the first outlet, and the second valve core resets and opens the second outlet to make the second water passage connected to the second air passage.

[0010] In some embodiments, the first protrusion is provided with a liquid inlet channel and a liquid inlet is provided at the front end of the first protrusion. After the first protrusion is inserted into the first mating hole and pushes the first valve core, the front end of the first protrusion is located inside the first outlet. The liquid inlet allows cleaning liquid to flow in and flow through the liquid inlet channel to the working spray hole.

[0011] In some embodiments, the first protrusion and the second protrusion are arranged side by side, and correspondingly, the first mating hole and the second mating hole are also arranged side by side. The first protrusion has a flow channel that communicates with the spray hole of the working component. The front end of the first mating hole forms a one-way valve engagement with the first valve core, and the front end of the second mating hole forms a one-way valve engagement with the second valve core. The side of the second mating hole has a second outlet. After the first part and the second part are connected, the first protrusion pushes open the first valve core to make the first mating hole communicate with the flow channel, and the second protrusion pushes the second valve core to make the second valve core close the second outlet. After the first part and the second part are separated, the first valve core resets to close the first mating hole, and the second valve core resets to open the second outlet.

[0012] In some embodiments, a first air passage extends from the front of the first portion to the rear of the first portion. The front of the first portion has a first opening of the first air passage, and the rear of the first portion has a second opening of the first air passage. In a first state, the second opening is connected to the second air passage, and dirt is drawn in from the first opening and transported to the second air passage from the second opening. In a second state, the second opening is separated from the second air passage, and the second opening is exposed.

[0013] In some embodiments, the rear portion of the first part has a connecting sleeve for connecting with the second part, and the second opening is located inside the connecting sleeve. In the second state, the connecting sleeve can be used to fill with cleaning liquid to clean the first air passage.

[0014] In some embodiments, the rear portion of the first part has a first end face, the front portion of the second part has a second end face, the first end face has a second opening, and the second end face has an inlet for a second air passage. In a first state, the first end face and the second end face are sealed together.

[0015] In some embodiments, the second air path and water path switching valve is arranged in upper and lower layers.

[0016] In some embodiments, the water circuit switching valve is provided with a second outlet on the side near the wall of the second air circuit pipe.

[0017] Compared with the prior art, the present invention has the following advantages after adopting the above structure:

[0018] This disclosure includes a detachably connected first part and a second part. The first part has a working component, and the second part has a suction cleaner recovery path. A water circuit switching valve has two states controlled by whether the first and second parts are connected: a first state where the first and second parts are connected, in which the second water circuit is connected to the first water circuit via a first outlet, and the second outlet is closed; and a second state where the first and second parts are separated, in which the second water circuit is disconnected from the first water circuit, the first outlet is closed, and the second water circuit is connected to the second air circuit via a second outlet. Therefore, there is no need for a user-operated steering slider; the user only needs to focus on the connection between the first and second parts. When the first and second parts are connected, it is in the first state, i.e., the working state. The first air passage and the second air passage are connected. The second water passage supplies cleaning liquid to the first water passage through the first outlet, thus providing cleaning liquid for the work. Whether the cleaning liquid is supplied is controlled by the control valve. When the user operates the control valve to open the second water passage, the second water passage supplies cleaning liquid. When the control valve closes the second water passage, the second water passage stops supplying cleaning liquid. When the first and second parts are separated, it is in the second state, i.e., the cleaning state. In the cleaning state, when the user operates the control valve to open the second water passage, the second water passage supplies cleaning liquid to the second air passage through the second outlet to clean the suction cleaner's recovery path. When the control valve closes the second water passage, the second water passage stops supplying cleaning liquid.

[0019] As can be seen from the above, without the need to set a steering slider that requires user operation, it is no longer restricted by the steering slider. In other words, there is no need to set a steering slider on the surface of the housing in the second part. The setting position of the water circuit switching valve is relatively flexible. This is beneficial to reduce the flow path length from the second outlet to the second air path, which is beneficial to reduce the degree of dirt accumulation in the flow path and is less likely to cause blockage.

[0020] Since the first and second parts are detachably connected, the first and second air paths can be cleaned separately without complicating the structure due to the need to clean the first air path. In other words, the second water path, water path switching valve, etc., do not need to consider supplying cleaning liquid related to the first air path. The cleaning method of this disclosure can refer to the following: After the first and second parts are separated, the first air path of the first part can be rinsed with cleaning liquid (such as tap water), while the second air path is rinsed with cleaning liquid supplied by the second water path. At the same time, the suction source is turned on to suck the dirt generated during cleaning into the recovery tank, thereby completing the separate cleaning.

[0021] In summary, this disclosure eliminates the need for a steering slider to switch the water circuit switching valve, thus avoiding limitations imposed by the steering slider. It also facilitates both cleaning of the working components and the subsequent suction cleaner recovery path. Attached Figure Description

[0022] Figure 1 This is one of the three-dimensional schematic diagrams of a system for cleaning the recovery path of a suction cleaner.

[0023] Figure 2 This is the second three-dimensional schematic diagram of a system for cleaning the recovery path of a suction cleaner.

[0024] Figure 3 This is a three-dimensional schematic diagram showing the first and second parts separated.

[0025] Figure 4 This is a three-dimensional diagram showing the front of the second part.

[0026] Figure 5 for Figure 4 Front view of the front section.

[0027] Figure 6 This is a sectional view along axis AA.

[0028] Figure 7 This is a sectional view along the BB direction.

[0029] Figure 8 This is a cross-sectional view along the CC direction (the arrows in the figure indicate the cleaning and recycling direction during cleaning).

[0030] Figure 9 This is a three-dimensional diagram showing the rear of the first part.

[0031] Figure 10 for Figure 1 The back end view.

[0032] Figure 11 This is a sectional view along the DD direction.

[0033] Figure 12 This is an enlarged view of A.

[0034] Figure 13 This is a sectional view of EE.

[0035] Figure 14 This is a three-dimensional schematic diagram of a suction cleaner.

[0036] Explanation of reference numerals in the attached drawings: 1-First part, 1.1-Working end, 1.2-First opening, 1.3-Second opening, 1.4-Connecting sleeve, 1.5-First hook, 1.6-First end face, 1.7-First air passage, 2-Working spray hole, 3-Second part, 4-Second air passage, 5-Water passage switching valve, 6-First outlet, 7-Second outlet, 8-First valve core, 9-First spring, 10-Second valve core, 11-Second spring, 12-First protrusion, 13-Second protrusion, 14-Inlet channel, 15-Inlet, 16-Second end face, 17-Control key, 18-Control valve, 19-Second hook, 20-Cleaning spray hole, 21-Hose, 22-Connection port, 23-Main unit, 24-Second water passage. Detailed Implementation

[0037] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The embodiments described below are merely examples, and other obvious variations will arise for those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0038] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0039] It should be noted that the descriptions or names related to "water" are not limited to pure water, but refer to the broad scope defined by "cleaning liquid". "Cleaning liquid" can be pure water, water mixture, or non-aqueous "cleaning liquid", etc. All "cleaning liquids" applicable to the technical solutions of this disclosure are applicable.

[0040] like Figures 1 to 14The diagram illustrates a system and a suction cleaner for cleaning the return path of a suction cleaner. Specifically, the system includes a detachably connected first part 1 and a second part 3. The first part 1 has a working component, and the second part 3 has a suction cleaner return path. The first part 1 is provided with a first water passage and a first air passage 1.7 for the working component. The second part 3 is provided with a water passage switching valve 5, a second water passage 24, and a second air passage 4. The second water passage 24 is provided with a control valve 18 for opening and closing the second water passage 24. The control valve 18 can be operated to open and close via a control key 17. The inlet of the switching valve 5 is connected to the second water passage 24. The water passage switching valve 5 has a first outlet 6 and a second outlet 7. The water passage switching valve 5 has two states controlled by whether the first part 1 and the second part 3 are connected. The two states are: the first state after the first part 1 and the second part 3 are connected, in which the second water passage 24 is connected to the first water passage through the first outlet 6 and the second outlet 7 is closed; and the second state after the first part 1 and the second part 3 are separated, in which the second water passage 24 is disconnected from the first water passage, the first outlet 6 is closed, and the second water passage 24 is connected to the second air passage 4 through the second outlet 7. A suction cleaner using the aforementioned cleaning suction cleaner recovery path system includes a fluid delivery system for delivering cleaning liquid to the surface to be cleaned and a fluid recovery system for extracting dirt from the surface. The fluid recovery system has the aforementioned cleaning suction cleaner recovery path.

[0041] It should be noted that the described suction cleaner recovery path can refer to, for example... Figure 8 The second air passage 4 shown can also be as follows: Figure 14 The second air passage 4 shown is further connected to the flow path constructed by the hose 21 via the connection port 22. Additionally, due to the characteristics of the cleaning liquid flowing through the cleaning system, the suction cleaner recovery path may further include a recovery tank. In summary, the suction cleaner recovery path does not only refer to... Figure 8 As shown, this also means that the length of the second part, 3, is not limited to... Figure 8 The length shown, therefore, relative to Figure 14 ,exist Figure 1 , 3 In the figure, the second part 3 mainly shows the head of the second part 3 for detachable connection with the first part 1. The head is exemplified in the figure as a rod-shaped part, which is shown as a cylindrical rod with a circular cross-section. Of course, it can also be other cross-sectional shapes.

[0042] In some embodiments, such as Figure 3 , 9As shown, the working component, or first part 1, is integrated with the first part 1. The working end 1.1 of the working component is located at the front end of the first part 1. The working end 1.1 is generally provided with bristles, but these bristles are not shown in the accompanying drawings. Of course, the first part 1 can also have other structures. For example, the working component can be connected to an extension tube to form the first part 1, which would allow the working end 1.1 to be positioned further forward, making it easier for the user to reach further for use. However, regardless of the aforementioned situation, this disclosure has the following advantages. Specifically, even if the length of the first part 1 along the first air passage 1.7 is relatively long (resulting in a longer first air passage 1.7), or even if the first part 1 as a whole is relatively long (resulting in a longer first air passage 1.7), due to the design feature of this disclosure that allows for separate rinsing, there is no need to worry about the problem of a long second flow channel in the prior art.

[0043] In some embodiments, such as Figure 3 , 11 As shown in Figure 13, the front of the first part 1 has a working component, and the rear of the first part 1 is detachably plugged into the front of the second part 3. The water circuit switching valve 5 has two states controlled by whether the first part 1 and the second part 3 are connected or not. This means that the water circuit switching valve 5 has two states controlled by whether the rear of the first part 1 and the front of the second part 3 are plugged into each other. With this design, the rear of the first part 1 and the front of the second part 3 can be detachably connected through the plug-in structure, which has the advantages of simple and convenient connection, making it convenient for users to operate. In addition, in order to ensure the plugging direction, a guide structure can be further set, so that the plugging can be accurate without the user's special attention.

[0044] In some embodiments, such as Figure 5 , 6 As shown in Figures 7, 11, and 12, the first part 1 has a male end with two control terminals, namely a first control terminal and a second control terminal. The water circuit switching valve 5 has a female end with a first valve core 8 and a second valve core 10. The first valve core 8 controls the opening and closing of the first outlet 6, and the second valve core 10 controls the opening and closing of the second outlet 7. When the male and female ends are engaged, the first control terminal actuates the first valve core 8 to open the first outlet 6, connecting the second water circuit 24 with the first water circuit. The second control terminal actuates the second valve core 10 to close the second outlet 7, preventing the second water circuit 24 from connecting with the second air circuit 4. When the male and female ends are separated, the first valve core 8 is reset by the first spring 9 to close the first outlet 6, and the second valve core 10 is reset by the second spring 11 to open the second outlet 7, connecting the second water circuit 24 with the second air circuit 4. This design results in a simple structure and convenient use.

[0045] In some embodiments, such as Figure 5 , 6As shown in Figures 7, 11, and 12, the male end has two control terminals, namely a first protrusion 12 and a second protrusion 13. The female end has a corresponding first mating hole and a second mating hole. The first mating hole has a first valve core 8, and the second mating hole has a second valve core 10. After the male end and the female end are mated, the first protrusion 12 is inserted into the first mating hole and pushes the first valve core 8, which opens the first outlet 6 to connect the second water passage 24 with the first water passage. The second protrusion 13 is inserted into the second mating hole and pushes the second valve core 10, which moves and closes the second outlet 7 to disconnect the second water passage 24 from the second air passage 4. After the male end and the female end are separated, the first valve core 8 resets and closes the first outlet 6, and the second valve core 10 resets and opens the second outlet 7 to connect the second water passage 24 with the second air passage 4. This design results in a simple structure and convenient use.

[0046] In some embodiments, such as Figure 12 As shown, the first protrusion 12 has a liquid inlet channel 14 and a liquid inlet 15 at its front end. After the first protrusion 12 is inserted into the first mating hole and pushes the first valve core 8, the front end of the first protrusion 12 is located inside the first outlet 6. The liquid inlet 15 allows cleaning liquid to flow in and through the liquid inlet channel 14 to the working spray hole 2. This design is conducive to a compact structure and effective use of space.

[0047] In some embodiments, such as Figure 4 , 5 As shown in Figures 7, 9, and 12, the first protrusion 12 and the second protrusion 13 are arranged side by side. Correspondingly, the first mating hole and the second mating hole are also arranged side by side. The first protrusion 12 has a flow channel that is connected to the spray hole of the working component. The front end of the first mating hole forms a one-way valve fit with the first valve core 8, and the front end of the second mating hole forms a one-way valve fit with the second valve core 10. The side of the second mating hole has a second outlet 7. After the first part 1 and the second part 3 are connected, the first protrusion 12 pushes open the first valve core 8 so that the first mating hole is connected to the flow channel. The second protrusion 13 pushes the second valve core 10 so that the second valve core 10 closes the second outlet 7. After the first part 1 and the second part 3 are separated, the first valve core 8 resets to close the first mating hole, and the second valve core 10 resets to open the second outlet 7.

[0048] In some embodiments, such as Figure 9 , 13As shown, the first air passage 1.7 extends from the front to the rear of the first part 1. The front of the first part 1 has a first opening 1.2 of the first air passage 1.7, and the rear of the first part 1 has a second opening 1.3 of the first air passage 1.7. In a first state, the second opening 1.3 is connected to the second air passage 4, and dirt is drawn in through the first opening 1.2 and transported to the second air passage 4 through the second opening 1.3. In a second state, the second opening 1.3 is separated from the second air passage 4, and the second opening 1.3 is exposed. This design facilitates the pouring of cleaning liquid through the second opening 1.3 for cleaning, which is convenient for users.

[0049] In some embodiments, such as Figure 9 As shown, the rear of the first part 1 has a connecting sleeve 1.4 for connecting with the second part 3. The second opening 1.3 is located inside the connecting sleeve 1.4. In the second state, the connecting sleeve 1.4 can be used to fill with cleaning liquid to clean the first air passage 1.7. With this design, on the one hand, the connecting sleeve 1.4 allows users to easily assemble and disassemble the first part 1 and the second part 3, improving ease of use. On the other hand, users do not need to pay special attention to aligning the second opening 1.3; they can simply align the connecting sleeve 1.4 with a faucet to rinse with clean water, which is very convenient.

[0050] In some embodiments, such as Figure 3 , 13 As shown, the connecting sleeve 1.4 is provided with a first hook 1.5, and the second part 3 is provided with a second hook 19. The detachable snap-fit ​​between the first hook 1.5 and the second hook 19 ensures the anti-separation performance after the first part 1 and the second part 3 are connected.

[0051] In some embodiments, such as Figure 3 , 4 As shown in Figure 9, the rear of the first part 1 has a first end face 1.6, and the front of the second part 3 has a second end face 16. The first end face 1.6 has a second opening 1.3, and the second end face 16 has an inlet for the second air passage 4. In the first state, the first end face 1.6 and the second end face 16 are sealed together. This design facilitates connection and also improves connection reliability under repeated disassembly and assembly. The sealing connection can be achieved using a sealing ring, i.e., a sealing ring is installed between the first end face 1.6 and the second end face 16.

[0052] In some embodiments, such as Figure 8 , 13 As shown, the second air passage 4 and the water passage switching valve 5 are arranged in upper and lower layers. Furthermore, based on this disclosure, the water passage switching valve 5 does not require an adjustment component perpendicular to the axis of the second air passage 4 (such as a steering slider in the prior art). Figure 6 , 7As shown in Figures 9, 11, 12, and 14, the water circuit switching valve 5 is axially disassembled and assembled with the first part 1 and the second part 3. The first air passage 1.7 and the second air passage 4 are located on the same side, while the working spray hole 2 and the water circuit switching valve 5 are located on the same other side. This design ensures that the space occupied by the working spray hole 2, the control end, and the water circuit switching valve 5 of the first part 1 is inclined towards the other side, without encroaching on the space of the first side. This design allows for a larger internal height of the second air passage 4, thus providing a larger suction channel with the same diameter. In particular, the water circuit switching valve 5 can be made even flatter based on the scheme disclosed herein, resulting in a larger suction channel.

[0053] In some embodiments, such as Figure 8 , 13 As shown, the water circuit switching valve 5 has a second outlet 7 located on the side of the pipe wall near the second air circuit 4. This design allows for a very short flow path between the second outlet 7 and the second air circuit 4. This facilitates the cleaning liquid reaching the second air circuit 4 quickly for cleaning with minimal pressure loss. Furthermore, the shorter flow path helps prevent dirt accumulation and blockage. To ensure the cleaning liquid is sprayed into the second air circuit 4, a cleaning nozzle 20 is provided on the pipe wall of the second air circuit 4, and the cleaning nozzle 20 is connected to the second outlet 7.

[0054] In some embodiments, such as Figure 14 As shown, a suction cleaner system employing the aforementioned cleaning suction cleaner recovery path includes a main unit 23. The main unit 23 includes a suction source, a clean water tank, a recovery tank, etc. The suction source, recovery tank, hose 21, rod-shaped part, and first part 1 constitute a fluid recovery system, which has the aforementioned cleaning suction cleaner recovery path.

[0055] When understanding this disclosure, the above structure may be referred to other embodiments / appendices if necessary. Figure 1 And that's understood, so I won't go into details here.

[0056] The above description is merely an illustrative embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features, and principles described in the scope of protection of the present invention are included within the scope of protection of the present invention.

Claims

1. A system for cleaning the recovery path of a suction cleaner, characterized in that, The device includes a detachably connected first part and a second part. The first part has a working component, and the second part has a suction cleaner recovery path. The first part is provided with a first water passage and a first air passage for the working component to operate. The second part is provided with a water passage switching valve, a second water passage, and a second air passage. The second water passage is provided with a control valve to open and close the second water passage. The inlet of the water passage switching valve is connected to the second water passage. The water passage switching valve has a first outlet and a second outlet. The water passage switching valve has two states controlled by whether the first part and the second part are connected or not. The two states are: the first state after the first part and the second part are connected, in which the second water passage is connected to the first water passage through the first outlet, and the second outlet is closed; and the second state after the first part and the second part are separated, in which the second water passage is disconnected from the first water passage, the first outlet is closed, and the second water passage is connected to the second air passage through the second outlet. The first part has a male terminal with two control terminals, namely a first control terminal and a second control terminal. The water circuit switching valve has a female terminal with a first valve core and a second valve core. The first valve core is used to control the opening and closing of the first outlet, and the second valve core is used to control the opening and closing of the second outlet. When the male terminal and the female terminal are engaged, the first control terminal actuates the first valve core to open the first outlet so that the second water circuit is connected to the first water circuit. The second control terminal actuates the second valve core to close the second outlet so that the second water circuit is not connected to the second air circuit. When the male terminal and the female terminal are separated, the first valve core resets and closes the first outlet, and the second valve core resets and opens the second outlet so that the second water circuit is connected to the second air circuit.

2. The system for cleaning the retrieval path of a suction cleaner as described in claim 1, characterized in that, The front of the first part has a working component, and the rear of the first part is detachably connected to the front of the second part. The water circuit switching valve has two states depending on whether the first part and the second part are connected.

3. The system for cleaning the retrieval path of a suction cleaner as described in claim 1, characterized in that, The male end has two control ends, namely a first protrusion and a second protrusion. The female end has a first mating hole and a second mating hole respectively. The first mating hole is equipped with a first valve core, and the second mating hole is equipped with a second valve core. After the male end and the female end are mated, the first protrusion is inserted into the first mating hole and pushes the first valve core, which will open the first outlet to connect the second water passage with the first water passage. The second protrusion is inserted into the second mating hole and pushes the second valve core, which moves and closes the second outlet to prevent the second water passage from connecting with the second air passage. After the male end and the female end are separated, the first valve core resets and closes the first outlet, and the second valve core resets and opens the second outlet to connect the second water passage with the second air passage.

4. The system for cleaning the retrieval path of a suction cleaner as described in claim 3, characterized in that, The first protrusion has a liquid inlet channel and a liquid inlet at its front end. After the first protrusion is inserted into the first mating hole and pushes the first valve core, the front end of the first protrusion is located inside the first outlet. The liquid inlet allows cleaning liquid to flow in and flow through the liquid inlet channel to the working spray hole.

5. The system for cleaning the retrieval path of a suction cleaner as described in claim 3, characterized in that, The first protrusion and the second protrusion are arranged side by side. Correspondingly, the first mating hole and the second mating hole are also arranged side by side. The first protrusion has a flow channel that is connected to the spray hole of the working part. The front end of the first mating hole forms a one-way valve fit with the first valve core, and the front end of the second mating hole forms a one-way valve fit with the second valve core. The side of the second mating hole has a second outlet. After the first part and the second part are connected, the first protrusion pushes open the first valve core to make the first mating hole connect with the flow channel, and the second protrusion pushes the second valve core to make the second valve core close the second outlet. After the first part and the second part are separated, the first valve core resets to close the first mating hole, and the second valve core resets to open the second outlet.

6. The system for cleaning the retrieval path of a suction cleaner as described in claim 1 or 2, characterized in that, The first air passage extends from the front of the first part to the rear of the first part. The front of the first part has a first opening of the first air passage, and the rear of the first part has a second opening of the first air passage. In a first state, the second opening is connected to the second air passage, and dirt is sucked in from the first opening and transported to the second air passage from the second opening. In a second state, the second opening is separated from the second air passage, and the second opening is exposed.

7. The system for cleaning the retrieval path of a suction cleaner as described in claim 6, characterized in that, The rear of the first part has a connecting sleeve for connecting with the second part, and the second opening is located inside the connecting sleeve. In the second state, the connecting sleeve can be used to fill with cleaning liquid to clean the first gas path.

8. The system for cleaning the retrieval path of a suction cleaner as described in claim 6, characterized in that, The rear of the first part has a first end face, and the front of the second part has a second end face. The first end face has a second opening, and the second end face has an inlet for a second air passage. In the first state, the first end face and the second end face are sealed together.

9. The system for cleaning the retrieval path of a suction cleaner as described in claim 1, characterized in that, The second gas and water switching valve is set up in two separate layers.

10. The system for cleaning the retrieval path of a suction cleaner as described in claim 1 or 9, characterized in that, A second outlet is provided on the side of the water circuit switching valve near the second air circuit pipe wall.

11. A suction cleaner employing the system for cleaning the recovery path of a suction cleaner according to any one of claims 1 to 10, comprising a fluid delivery system for delivering cleaning liquid to the surface to be cleaned and a fluid recovery system for extracting contaminants from the surface, characterized in that, The fluid recovery system has the aforementioned system for cleaning the recovery path of the suction cleaner.

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