Cleaning device

Abstract

The present disclosure provides a cleaning apparatus. According to the cleaning equipment provided by the utility model, in a normal working state, the filtering channel valve opens the first filtering channel and the second filtering channel, and the first air supplementing channel valve closes the first air supplementing channel and the second air supplementing channel. In a self-cleaning state, the filtering channel valve opens the first filtering channel and closes the second filtering channel, and the first air supplementing channel valve closes the first air supplementing channel and opens the second air supplementing channel; or, the filtering channel valve closes the first filtering channel and opens the second filtering channel, and the first air supplementing channel valve opens the first air supplementing channel and closes the second air supplementing channel. The self-cleaning assembly of the self-cleaning equipment provided by the invention has a relatively simple structure, so that the cost of the cleaning equipment can be reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of cleaning, and in particular, to a cleaning device. BACKGROUND

[0002] The suction source assembly and the filter assembly are core parts of the cleaning device, and they work together to achieve the cleaning function. When the cleaning device is working, the suction source assembly generates negative pressure to form a suction airflow, and the suction airflow entraps the dirt such as dust on the surface to be cleaned into the dust collection chamber of the cleaning device, and then flows to the suction source through the filter assembly. When the suction airflow passes through the filter assembly, the dirt entrapped in the suction airflow is intercepted by the filter assembly and remains in the dust collection chamber, and the cleaned suction airflow is discharged outside the cleaning device after passing through the suction source assembly.

[0003] After the cleaning device is used for a long time, the dirt attached to the filter assembly will gradually increase, eventually causing the filter assembly to be clogged, and thus causing the working efficiency and cleaning effect of the cleaning device to be reduced. For this reason, some cleaning devices have a self-cleaning assembly that switches the cleaning device between a normal working state and a self-cleaning state. In the normal working state, the filter assembly as a whole performs the filtering work. In the self-cleaning state, the suction airflow passes through part of the filter assembly so that this part of the filter assembly performs normal filtering work, and at the same time, the self-cleaning airflow flows reversely through another part of the filter assembly so that this part of the filter assembly performs the self-cleaning function.

[0004] However, the self-cleaning assembly of the conventional cleaning device has a relatively complex structure, and the cost of the cleaning device is relatively high. CONTENT OF THE UTILITY MODEL

[0005] Therefore, the utility model provides a cleaning device to solve the problem that the self-cleaning assembly of the conventional cleaning device has a relatively complex structure, and the cost of the cleaning device is relatively high.

[0006] The cleaning device provided by the present disclosure comprises a housing, a suction source assembly, a filter assembly and a self-cleaning assembly. The housing is provided with an air inlet, an air outlet and a supplementary air inlet. The suction source assembly is used to generate a vacuum at least partially in the housing to suck in air flow from the air inlet and discharge from the air outlet. The filter assembly is used to filter dirt entrained in the air flow sucked in from the air inlet in a normal working state. A filter passage is formed between the filter assembly and the suction source assembly, and a supplementary air passage is formed between the filter assembly and the supplementary air inlet. The self-cleaning assembly is used to at least partially close the filter passage and at least partially open the supplementary air passage in a self-cleaning state to clean the filter assembly. The filter passage comprises at least a first filter passage and a second filter passage, and the supplementary air passage comprises at least a first supplementary air passage and a second supplementary air passage. The self-cleaning assembly comprises a driving member, a filter passage valve and a first supplementary air passage valve. The filter passage valve is driven by the driving member to control the opening and closing of the first filter passage and the second filter passage. The first supplementary air passage valve is driven by the driving member to control the opening and closing of the first supplementary air passage and the second supplementary air passage. In the normal working state, the filter passage valve opens the first filter passage and the second filter passage, and the first supplementary air passage valve closes the first supplementary air passage and the second supplementary air passage. In the self-cleaning state, the filter passage valve opens the first filter passage and closes the second filter passage, and the first supplementary air passage valve closes the first supplementary air passage and opens the second supplementary air passage; or, the filter passage valve closes the first filter passage and opens the second filter passage, and the first supplementary air passage valve opens the first supplementary air passage and closes the second supplementary air passage.

[0007] In the normal working state, the filter passage valve simultaneously opens the first filter passage and the second filter passage. This enables the filter assembly of the cleaning device to perform filtering work as a whole. That is, the suction air flow entraining dirt can pass through the first filter passage and the second filter passage in parallel after passing through the filter assembly, and flow to the suction source assembly respectively. At the same time, the first supplementary air passage valve closes the first supplementary air passage and the second supplementary air passage to prevent external air from entering through the supplementary air passage, thereby maintaining the negative pressure state inside the cleaning device and ensuring the stability and filtering efficiency of the suction source assembly.

[0008] In the self-cleaning state, the cleaning device can perform self-cleaning on the first filter passage and the second filter passage respectively, ensuring that part of the filter assembly continues to perform filtering work while the other part of the filter assembly performs self-cleaning.

[0009] Specifically, when the filter passage valve opens the first filter passage and closes the second filter passage, and the first air supplement passage valve closes the first air supplement passage and opens the second air supplement passage, the filter assembly performs filtering work on the portion corresponding to the first filter passage and self-cleaning on the portion corresponding to the second air supplement passage. This allows the first filter passage to remain open, continue to suck air flow from the air inlet and perform filtering, ensuring uninterrupted filtering work of the cleaning device. At the same time, the opening of the second air supplement passage allows external air to enter, generating an air supplement flow to self-clean the second filter passage and remove the dirt accumulated on the filter assembly.

[0010] Likewise, when the filter passage valve closes the first filter passage and opens the second filter passage, and the first air supplement passage valve opens the first air supplement passage and closes the second air supplement passage, the filter assembly performs filtering work on the portion corresponding to the second filter passage and self-cleaning on the portion corresponding to the first air supplement passage.

[0011] According to the cleaning device provided by the present disclosure, the filter passage valve and the air supplement passage valve work cooperatively under the driving of the same driving member, realizing the switching between the normal working state and the self-cleaning state, and ensuring self-cleaning of the filter assembly without interrupting the filtering work in the self-cleaning state. Compared with the previous self-cleaning devices, the self-cleaning assembly of the self-cleaning device provided by the present disclosure has a relatively simple structure, which helps to reduce the cost of the cleaning device.

[0012] Additionally or alternatively, the filter assembly includes a first filter and a second filter. The suction source assembly includes a first suction source and a second suction source. The first suction source, when operating, generates a first air flow through the first filter to the first suction source. The second suction source, when operating, generates a second air flow through the second filter to the second suction source. The filter passage valve and the first air supplement passage valve are driven by the driving member to move integrally between a plurality of positions including a first position, a second position, and a third position. In the first position, the filter passage valve opens the first filter passage and the second filter passage, and the first air supplement passage valve closes the first air supplement passage and the second air supplement passage, to allow the first air flow and the second air flow to be generated. In the second position, the filter passage valve closes the first filter passage and opens the second filter passage to allow the second air flow to be generated, and the first air supplement passage valve opens the first air supplement passage and closes the second air supplement passage to allow a third air flow from the air supplement inlet to the first filter through the first air supplement passage to be generated. In the third position, the filter passage valve closes the second filter passage and opens the first filter passage to allow the first air flow to be generated, and the first air supplement passage valve opens the first air supplement passage and closes the second air supplement passage to allow a fourth air flow from the air supplement inlet to the second filter through the second air supplement passage to be generated.

[0013] When the self-cleaning assembly is in the first position, the filter passage valve opens the first filter passage and the second filter passage, and the first air supplement passage valve closes the first air supplement passage and the second air supplement passage. At this time, the first air flow generated by the operation of the first suction source and the second air flow generated by the operation of the second suction source simultaneously perform suction work, and the filter assembly as a whole, i.e., the first filter and the second filter, perform filtering work.

[0014] When the self-cleaning assembly is in the second position, the filter passage valve closes the first filter passage and opens the second filter passage, and the first air supplement passage valve opens the first air supplement passage and closes the second air supplement passage. At this time, the second air flow generated by the operation of the second suction source flows through the second filter, so that the second filter performs filtering work. At the same time, the third air flow generated from the air supplement port to the first filter through the first air supplement passage reversely flows through the first filter, so that the first filter is self-cleaned.

[0015] When the self-cleaning assembly is in the third position, the filter passage valve closes the second filter passage and opens the first filter passage, and the first air supplement passage valve opens the first air supplement passage and closes the second air supplement passage. At this time, the first air flow generated by the operation of the first suction source flows through the first filter, so that the first filter performs filtering work. At the same time, the fourth air flow generated from the air supplement port to the second filter through the second air supplement passage reversely flows through the second filter, so that the second filter is self-cleaned.

[0016] According to the cleaning device provided by the present disclosure, the filter passage valve and the first air supplement passage valve are driven by the driving member to move integrally between the first position, the second position and the third position, so that the cleaning device is switched between the normal working state, the self-cleaning state in which the first filter is self-cleaned and the second filter filters, and the self-cleaning state in which the second filter is self-cleaned and the first filter filters. Therefore, the cleaning device provided by the present disclosure realizes the switching of the relatively complex working states by using a relatively simple structure.

[0017] Additionally or alternatively, the first filter passage includes a first filter flow passage opening. The opening and closing of the first filter passage are controlled by selectively opening and closing the first filter flow passage opening by driving the filter passage valve. The first filter passage is divided into a first suction source side filter passage close to the suction source assembly side and a first filter side filter passage close to the filter assembly side by the first filter flow passage opening. The second filter passage includes a second filter flow passage opening. The opening and closing of the second filter passage are controlled by selectively opening and closing the second filter flow passage opening by driving the filter passage valve. The second filter passage is divided into a second suction source side filter passage close to the suction source assembly side and a second filter side filter passage close to the filter assembly side by the second filter flow passage opening. The first suction source side filter passage and the second suction source side filter passage are isolated from each other, and the first filter side filter passage and the second filter side filter passage are isolated from each other.

[0018] According to the above configuration, the first filter channel and the second filter channel are isolated from each other. That is, the cleaning device can control the filter channel valve to make the first filter channel and the second filter channel independently perform the filtering work. When self-cleaning is needed, one of the filter channels can be selectively opened or closed to avoid cross contamination, thereby respectively and independently achieving the switching of the self-cleaning state of the first filter channel and the second filter channel.

[0019] Additionally or alternatively, the first air supplement channel includes a first air supplement flow port. The opening and closing of the first air supplement channel are controlled by selectively opening and closing the first air supplement flow port by driving the first air supplement channel valve. The first air supplement channel is divided by the first air supplement flow port into a first air supplement port side air supplement channel close to the air supplement port side and a first filter side air supplement channel close to the filter assembly side. The second air supplement channel includes a second air supplement flow port. The opening and closing of the second air supplement channel are controlled by selectively opening and closing the second air supplement flow port by driving the first air supplement channel valve. The second air supplement channel is divided by the second air supplement flow port into a second air supplement port side air supplement channel close to the air supplement port side and a second filter side air supplement channel close to the filter assembly side. The first air supplement port side air supplement channel and the second air supplement port side air supplement channel at least partially overlap, the first filter side air supplement channel and the second filter side air supplement channel are isolated from each other, and the first filter side air supplement channel and the first filter side filter channel at least partially overlap, and the second filter side air supplement channel and the second filter side filter channel at least partially overlap.

[0020] This configuration ensures the relative independence of the first air supplement channel, the second air supplement channel, the first filter channel and the second filter channel, greatly simplifies the structure and improves the space utilization.

[0021] When the self-cleaning assembly is in the first position, the first air supplement channel valve closes the first air supplement flow port and the second air supplement flow port, the first air supplement port side air supplement channel is isolated from the first filter side air supplement channel, and the second air supplement port side air supplement channel is isolated from the second filter side air supplement channel. Although the first filter side air supplement channel at least partially overlaps with the first filter side filter channel, external air cannot flow into the first filter channel through the first air supplement channel, ensuring the independence of the first filter channel relative to the first air supplement channel when the first filter performs the filtering work. Similarly, although the second filter side air supplement channel at least partially overlaps with the second filter side filter channel, external air cannot flow into the second filter channel through the second air supplement channel, ensuring the independence of the second filter channel relative to the second air supplement channel when the second filter performs the filtering work.

[0022] When the self-cleaning assembly is in the second position, the first air supplement passage valve opens the first air supplement flow port and closes the second air supplement flow port, the first air supplement port side air supplement passage is connected with the first filter side air supplement passage, and the second air supplement port side air supplement passage is disconnected with the second filter side air supplement passage. Although the first air supplement port side air supplement passage and the second air supplement port side air supplement passage at least partially overlap, because the first filter side air supplement passage and the second filter side air supplement passage are isolated from each other, external air only flows through the first air supplement passage to clean the first filter, and does not flow into the second filter passage through the second air supplement passage, thereby ensuring the relative independence of the first air supplement passage and the second filter passage when the first filter is cleaned and the second filter is filtering.

[0023] When the self-cleaning assembly is in the third position, the first air supplement passage valve closes the first air supplement flow port and opens the second air supplement flow port, the first air supplement port side air supplement passage is disconnected with the first filter side air supplement passage, and the second air supplement port side air supplement passage is connected with the second filter side air supplement passage. Although the first air supplement port side air supplement passage and the second air supplement port side air supplement passage at least partially overlap, because the first filter side air supplement passage and the second filter side air supplement passage are isolated from each other, external air only flows through the second air supplement passage to clean the second filter, and does not flow into the first filter passage through the first air supplement passage, thereby ensuring the relative independence of the second air supplement passage and the first filter passage when the second filter is cleaned and the first filter is filtering.

[0024] Additionally or alternatively, the housing is provided with an air supplement cavity. The first air supplement port side air supplement passage and the second air supplement port side air supplement passage at least partially locate in the air supplement cavity and overlap in the air supplement cavity. The air supplement cavity is provided with a third air supplement flow port, which is located upstream of the first air supplement flow port and the second air supplement flow port. The self-cleaning assembly further comprises a second air supplement passage valve, and the filter passage valve, the first air supplement passage valve and the second air supplement passage valve are integrally moved between a plurality of positions by a driving member. In the first position, the second air supplement passage valve blocks the third air supplement flow port. In any one of the second position and the third position, the second air supplement passage valve opens the third air supplement flow port.

[0025] According to the above structure, when the self-cleaning assembly is in the first position, the second air supplement passage valve blocks the third air supplement flow port, and at the same time, the first air supplement passage valve also closes the first air supplement flow port and the second air supplement flow port. In this way, multiple disconnections are formed in the first and second air supplement passages. This ensures that external air does not flow to the first and second filters through the first and second air supplement passages when the first and second filters are filtering. This avoids interference of air flow, maintains the negative pressure state inside the cleaning device, and ensures the stability of suction force and filtering performance.

[0026] Additionally or alternatively, the cavity wall of the air supplement cavity comprises a bottom wall and two first side walls opposite in the first direction. The first air supplement flow passage opening and the second air supplement flow passage opening are arranged on the bottom wall of the air supplement cavity. The two first side walls are respectively provided with two third air supplement flow passage openings facing in the first direction. The two second air supplement passage valves corresponding to the two third air supplement flow passage openings are arranged in the first direction.

[0027] According to the above configuration, the two first side walls arranged in the first direction are respectively provided with the two third air supplement flow passage openings, and the two second air supplement passage valves arranged in the first direction are respectively used to selectively open and close the two third air supplement flow passage openings. In this way, air supplement and pressure relief can be realized at the same time, thereby reducing the resistance of the opening and closing of the second air supplement passage valve. Specifically, when the air supplement flow enters the air supplement cavity through the third air supplement flow passage opening, the symmetrically arranged third air supplement flow passage opening and second air supplement passage valve can balance the internal pressure of the air supplement cavity, avoiding the difficulty of opening and closing the second air supplement passage valve due to excessive pressure or the turbulence of the internal airflow of the cleaning equipment.

[0028] Additionally or alternatively, the driving member is an electromagnetic member, and the self-cleaning assembly further comprises a valve rod and a first connecting portion. The valve rod extends in the first direction and is slidable in the first direction. The electromagnetic member is magnetically coupled to the valve rod and moves the self-cleaning assembly as a whole between the plurality of positions by applying a magnetic driving force to the valve rod. The two second air supplement passage valves are fixed to the valve rod. The first connecting portion extends downward from the second air supplement passage valves to the filter passage valve.

[0029] According to the above configuration of the self-cleaning assembly, the cleaning equipment moves the self-cleaning assembly as a whole between the plurality of positions by driving the valve rod with the electromagnetic member, thereby achieving flexible control of the opening and closing of the air supplement passage. The first connecting portion extends downward from the second air supplement passage valves to the filter passage valve, ensuring that the self-cleaning assembly can move as a whole in the cleaning equipment and accurately switch between the normal working state, the self-cleaning state of the first filter and the filtering state of the second filter, and the self-cleaning state of the second filter and the filtering state of the first filter, so that the self-cleaning assembly has a relatively simple structure.

[0030] Additionally or alternatively, the air supplement cavity is provided with a second side wall on one side in a second direction. The second direction is perpendicular to the first direction. The second side wall is provided with an elongated hole extending in the first direction. The self-cleaning assembly further comprises a second connecting portion extending through the elongated hole and slidable in the elongated hole in the first direction. One end of the second connecting portion is connected to the filter passage valve, and the other end is connected to at least one of the first air supplement passage valve, the second air supplement passage valve, and the valve rod.

[0031] According to the configuration, when the valve rod is driven by the driving member, the first air supplement passage valve, the second air supplement passage valve and the filter passage valve can be integrally moved in the first direction among the plurality of positions. Moreover, the configuration of the self-cleaning assembly has the advantages of simple structure and easy assembly.

[0032] Additionally or alternatively, the housing comprises a first valve body, a second valve body, a lower cover and a filter frame. The first valve body cooperates with the second valve body to form an air supplement cavity, and cooperates with the second valve body and the lower cover to form a first transition cavity and a second transition cavity separated by the air supplement cavity at the bottom of the air supplement cavity. The first filter side air supplement passage and the first filter side filter passage are at least partially located in the first transition cavity and coincide in the first transition cavity. The second filter side air supplement passage and the second filter side filter passage are at least partially located in the second transition cavity and coincide in the second transition cavity. The filter frame is provided with a first filter cavity and a second filter cavity separated by each other and accommodating the first filter and the second filter respectively. The first transition cavity is in communication with the first filter cavity below it, and the second transition cavity is in communication with the second filter cavity below it. The first transition cavity is in communication with the first suction source through a first filter flow port, and in communication with the air supplement cavity through a first air supplement flow port. The second transition cavity is in communication with the second suction source through a second filter flow port, and in communication with the air supplement cavity through a second air supplement flow port.

[0033] By assembling the first valve body, the second valve body, the lower cover and the filter frame together, at least part of the first air supplement passage, the second air supplement passage, the first filter passage and the second filter passage are formed inside the housing. This configuration has the advantages of simple structure and easy installation.

[0034] Additionally or alternatively, the top parts of the two filters are connected together by an elastic frame. The elastic frame is compressed between the lower cover and the filter frame, and cooperates with the lower cover and the filter frame to form a first communication window and a second communication window separated by each other. The first filter cavity is in communication with the first transition cavity through the first communication window, and the second filter cavity is in communication with the second transition cavity through the second communication window.

[0035] Since the top parts of the two filters are connected together by the elastic frame, the two filters can be integrally operated during installation and replacement, which makes the installation and replacement operation more convenient. Through the cooperation of the elastic frame with the lower cover and the filter frame, the whole of the first filter cavity and the first transition cavity is isolated from the whole of the second filter cavity and the second transition cavity, thereby allowing one filter to filter while the other filter is self-cleaning.

[0036] Additionally or alternatively, the cleaning apparatus further comprises a tray. The tray cooperates with the lower cover to form first and second suction source side filter channels that are separated from each other. The first and second suction source side filter channels are located on one side of the air supply cavity in the second direction, and the first and second suction source side filter channels are arranged along the first direction.

[0037] The tray cooperates with the lower cover to form first and second suction source side filter channels that are separated from each other, which has the advantages of simple structure and easy disassembly. The first and second suction source side filter channels are located on one side of the air supply cavity in the second direction, and the first and second suction source side filter channels are arranged along the first direction, so that the space in the housing can be fully utilized, and the lengths of the two filter channels are shortened. BRIEF DESCRIPTION OF DRAWINGS

[0038] It should be understood that the following drawings only show certain embodiments of the present application and should not be considered as limiting the scope.

[0039] It should be understood that the same or similar reference signs are used to represent the same or similar elements in the drawings.

[0040] It should be understood that the drawings are only schematic and the sizes and proportions of the elements in the drawings are not necessarily to scale.

[0041] Figure 1 Structure schematic view of the cleaning apparatus according to an embodiment of the present application.

[0042] Figure 2 Structure schematic view of the main body of the cleaning apparatus in Figure 1 Structure schematic view of the main body of the cleaning apparatus in

[0043] Figure 3 Structure schematic view of the suction source assembly of the cleaning apparatus in Figure 2 Structure schematic view of the suction source assembly of the cleaning apparatus in

[0044] Figure 4 Structure schematic view of the filter assembly of the cleaning apparatus in Figure 2 Structure schematic view of the filter assembly of the cleaning apparatus in

[0045] Figure 5 Structure schematic view of the self-cleaning assembly of the cleaning apparatus in Figure 2 Structure schematic view of the self-cleaning assembly of the cleaning apparatus in

[0046] Figure 6 Structure schematic view of the main body of the cleaning apparatus in Figure 1 Structure schematic view of the main body of the cleaning apparatus in

[0047] Figure 7 Structure schematic view of the main body of the cleaning apparatus in Figure 1 Structure schematic view of the main body of the cleaning apparatus in, wherein the self-cleaning assembly is in the first position.

[0048] Figure 8 is a schematic cross-sectional view of a main body of a cleaning device in Figure 1 , wherein the self-cleaning assembly is in the second position.

[0049] Figure 9 is a schematic cross-sectional view of a main body of a cleaning device in Figure 1 , wherein the self-cleaning assembly is in the third position.

[0050] Figure 10 is a structural schematic view of a first valve body in Figure 2

[0051] Figure 11 is a structural schematic view of a second valve body in Figure 2

[0052] Figure 12 is a structural schematic view of a filter frame in Figure 2

[0053] Figure 13 is a structural schematic view of a tray in Figure 2

[0054] Figure 14 is a structural schematic view of a self-cleaning assembly of a cleaning device according to an embodiment of the present disclosure.

[0055] Figure 15 is a structural schematic view of a suction source assembly of a cleaning device in Figure 14

[0056] Figure 16 is a structural schematic view of a tray in Figure 14

[0057] Figure 17 is a structural schematic view of a suction source assembly and a tray cooperation in Figure 14 DETAILED DESCRIPTION

[0058] The self-cleaning assembly of the conventional cleaning device has a relatively complex structure and the cleaning device has a relatively high cost. Therefore, the present disclosure provides a cleaning device. Compared with the conventional cleaning device, the cleaning assembly of the cleaning device provided by the present disclosure has a relatively simple structure, which helps to reduce the cost of the cleaning device.

[0059] ​​​​​​​Many specific details are set forth in the following description in order to provide an understanding of the structures, functions, and use of the embodiments described and shown in the specification. It will be understood that the embodiments described and shown herein are non-limiting examples, and that the particular structural and functional details disclosed herein can be representative and exemplary. Variations and changes can be made to these embodiments without departing from the scope of the claims.

[0060] The present disclosure provides a cleaning device 100. For the sake of convenience, the overall configuration of the cleaning device 100 will be described first. It should be understood that the configuration of the cleaning device 100 should not be limited to the following description. For example, one or more of the elements introduced below can be omitted or replaced, and the layout relationship therebetween can be replaced.

[0061] Reference Figure 1 The cleaning device 100 can include a main body 200, a tube 300, and a suction head 400. The proximal end of the tube 300 is connected to the main body 200, and the distal end of the tube 300 is connected to the suction head 400. With the tube 300 and the suction head 400, the operator can apply the suction airflow generated in the main body 200 to a location far away from it or to some corners that are not easy to reach.

[0062] Reference Figure 1 And Figure 2 The main body 200 can include a head 201 and a dust bin 202. The head 201 is mounted on the dust bin 202 and covers the top end of the dust bin 202 to form a substantially closed dust collection chamber 203 in cooperation with the dust bin 202. The shell of the head 201 and the shell of the dust bin 202 can be collectively referred to as the shell of the cleaning device 100.

[0063] The shell 10 of the cleaning device 100 is provided with an air inlet 11a, an air outlet 11b, and a supplementary air inlet 11c. The air inlet 11a can be provided on the dust bin 202 and communicate with the dust collection chamber 203. The end of the tube 300 can be connected to the air inlet 11a. The air outlet 11b and the supplementary air inlet 11c can be provided on the head 201. In some examples, the head 201 can include an upper cover 2011, which is also part of the shell. The upper cover 2011 can be provided with an air inlet grille 2012, which can serve as both the air outlet 11b and the supplementary air inlet 11c. In other examples, the air outlet 11b and the supplementary air inlet 11c can be different openings.

[0064] Reference Figure 2The cleaning device 100 provided in this disclosure includes a housing 10, a suction source assembly 20, a filter assembly 30, and a self-cleaning assembly 40. The housing 10 is provided with an air inlet 11a, an exhaust port 11b, and a make-up air port 11c. The suction source assembly 20 is used to generate a vacuum at least partially within the housing 10 to draw in airflow from the air inlet 11a and discharge it from the exhaust port 11b. The filter assembly 30 is used to filter contaminants carried in the airflow drawn in from the air inlet 11a under normal operating conditions. Referring to the figure, a filter channel is formed between the filter assembly 30 and the suction source assembly 20, and a make-up air channel is formed between the filter assembly 30 and the make-up air port 11c. The self-cleaning assembly 40 is used to at least partially close the filter channel and at least partially open the make-up air channel in a self-cleaning state to clean the filter assembly 30. The filter channel includes at least a first filter channel P11 and a second filter channel P12, and the make-up air channel includes at least a first make-up air channel P21 and a second make-up air channel P22. The self-cleaning assembly 40 includes a drive unit 41, a filter channel valve 42, and a first air supply channel valve 43. The filter channel valve 42 is driven by the drive unit 41 to control the opening and closing of the first filter channel P11 and the second filter channel P12. The first air supply channel valve 43 is driven by the drive unit 41 to control the opening and closing of the first air supply channel P21 and the second air supply channel P22. Under normal operating conditions, the filter channel valve 42 opens the first filter channel P11 and the second filter channel P12, and the first air supply channel valve 43 closes the first air supply channel P21 and the second air supply channel P22. Under self-cleaning conditions, the filter channel valve 42 opens the first filter channel P11 and closes the second filter channel P12, and the first air supply channel valve 43 closes the first air supply channel P21 and opens the second air supply channel P22; or, the filter channel valve 42 closes the first filter channel P11 and opens the second filter channel P12, and the first air supply channel valve 43 opens the first air supply channel P21 and closes the second air supply channel P22.

[0065] Under normal operating conditions, filter channel valve 42 simultaneously opens the first filter channel P11 and the second filter channel P12. This allows the filter assembly 30 of the cleaning device 100 to perform filtration as a whole. In other words, the suction airflow carrying contaminants, after passing through the filter assembly 30, can pass in parallel through the first filter channel P11 and the second filter channel P12, flowing to the first suction source 21 and the second suction source 22 of the suction source assembly 20, respectively. Furthermore, the suction source assembly 20 is provided with a corresponding exhaust port 11b. That is, referring to... Figure 3 The first suction source 21 exhausts air from the exhaust port 11b1, and the second suction source 22 exhausts air from the exhaust port 11b2. The exhaust ports 11b1 and 11b2 are located on opposite sides of the suction source assembly 20 along the first direction. The exhaust port 11b1 is located at... Figure 3The suction source assembly 20 is shielded. At the same time, the first air supplement passage valve 43 closes the first air supplement passage P21 and the second air supplement passage P22, preventing external air from entering through the air supplement passages, thereby maintaining the negative pressure state inside the cleaning device 100 and ensuring the stability and filtering efficiency of the suction source assembly 20.

[0066] For ease of understanding, in the drawings, the first direction is indicated by arrows X+ and X-. The arrow X+ is used to indicate one side in the first direction, and the arrow X- is used to indicate the other side in the first direction. The second direction is indicated by arrows Y+ and Y-. The arrow Y+ is used to indicate one side in the second direction, and the arrow Y- is used to indicate the other side in the second direction.

[0067] In the self-cleaning state, the cleaning device 100 can perform self-cleaning on the first filter passage P11 and the second filter passage P12, respectively, ensuring that part of the filter assembly 30 continues to filter, and the other part of the filter assembly 30 performs self-cleaning.

[0068] Specifically, when the filter passage valve 42 opens the first filter passage P11 and closes the second filter passage P12, and the first air supplement passage valve 43 closes the first air supplement passage P21 and opens the second air supplement passage P22, the part of the filter assembly 30 corresponding to the first filter passage P11 performs filtering work, and the part corresponding to the second air supplement passage P22 performs self-cleaning. This allows the first filter passage P11 to remain open, continue to suck air flow from the air inlet 11a and perform filtering, ensuring that the filtering work of the cleaning device 100 is uninterrupted. At the same time, the opening of the second air supplement passage P22 allows external air to enter, generating a supplement air flow to perform self-cleaning on the second filter passage P12 and remove the accumulated dirt on the filter assembly 30.

[0069] Similarly, when the filter passage valve 42 closes the first filter passage P11 and opens the second filter passage P12, and the first air supplement passage valve 43 opens the first air supplement passage P21 and closes the second air supplement passage P22, the part of the filter assembly 30 corresponding to the second filter passage P12 performs filtering work, and the part corresponding to the first air supplement passage P21 performs self-cleaning.

[0070] According to the cleaning device 100 provided by the present disclosure, the filter passage valve 42 and the first air supplement passage valve 43 work cooperatively under the driving of the same driving member 41, realizing the switching between the normal working state and the self-cleaning state, and ensuring self-cleaning of the filter assembly 30 without interrupting the filtering work in the self-cleaning state. Compared with the previous cleaning device 100, the self-cleaning assembly 40 of the cleaning device 100 provided by the present disclosure has a relatively simple structure, which helps to reduce the cost of the cleaning device 100.

[0071] ReferenceFigure 2 to Figure 4 The filter assembly 30 includes a first filter 31 and a second filter 32. The suction source assembly 20 includes a first suction source 21 and a second suction source 22. The first suction source 21, when in operation, generates a first airflow through the first filter 31 to the first suction source 21. The second suction source 22, when in operation, generates a second airflow through the second filter 32 to the second suction source 22. Referring to Figure 5 to Figure 9 The filter passage valve 42 and the first air supplement passage valve 43 are integrally moved by the driving member 41 between a plurality of positions including a first position, a second position, and a third position. As shown in FIG. 1, the filter passage valve 42 and the first air supplement passage valve 43 are integrally moved by the driving member 41 between the first position, the second position, and the third position. Figure 7 In the first position, the filter passage valve 42, the first air supplement passage valve 43, and the second air supplement passage valve 44 mentioned below are integrally located closest to the driving member 41, and the filter assembly 30, i.e., the first filter 31 and the second filter 32, is in operation. In the second position, the second filter 32 is in operation, and the first filter 31 is in self-cleaning. In the third position, the first filter 31 is in operation, and the second filter 32 is in self-cleaning. Figure 8 In the first position, the filter passage valve 42, the first air supplement passage valve 43, and the second air supplement passage valve 44 mentioned below are integrally located closest to the driving member 41, and the filter assembly 30, i.e., the first filter 31 and the second filter 32, is in operation. In the second position, the second filter 32 is in operation, and the first filter 31 is in self-cleaning. In the third position, the first filter 31 is in operation, and the second filter 32 is in self-cleaning. Figure 9 In the first position, the filter passage valve 42, the first air supplement passage valve 43, and the second air supplement passage valve 44 mentioned below are integrally located closest to the driving member 41, and the filter assembly 30, i.e., the first filter 31 and the second filter 32, is in operation. In the second position, the second filter 32 is in operation, and the first filter 31 is in self-cleaning. In the third position, the first filter 31 is in operation, and the second filter 32 is in self-cleaning.

[0072] In the first position, the filter passage valve 42 opens the first filter passage P11 and the second filter passage P12, and the first air supplement passage valve 43 closes the first air supplement passage P21 and the second air supplement passage P22, to allow the first airflow and the second airflow to be generated. In the second position, the filter passage valve 42 closes the first filter passage P11 and opens the second filter passage P12 to allow the second airflow to be generated, and the first air supplement passage valve 43 opens the first air supplement passage P21 and closes the second air supplement passage P22 to allow the third airflow from the air supplement port 11c through the first air supplement passage P21 to the first filter 31 to be generated. In the third position, the filter passage valve 42 closes the second filter passage P12 and opens the first filter passage P11 to allow the first airflow to be generated, and the first air supplement passage valve 43 opens the first air supplement passage P21 and closes the second air supplement passage P22 to allow the fourth airflow from the air supplement port 11c through the second air supplement passage P22 to the second filter 32 to be generated.

[0073] Referring to Figure 6 to Figure 9When the self-cleaning assembly 40 is in the first position, the filter passage valve 42 opens the first filter passage P11 and the second filter passage P12, and the first air supplement passage valve 43 closes the first air supplement passage P21 and the second air supplement passage P22. At this time, the first air flow generated by the operation of the first suction source 21 and the second air flow generated by the operation of the second suction source 22 simultaneously perform suction work, and the filter assembly 30 as a whole, i.e., the first filter 31 and the second filter 32, perform filtering work.

[0074] When the self-cleaning assembly 40 is in the second position, the filter passage valve 42 closes the first filter passage P11 and opens the second filter passage P12, and the first air supplement passage valve 43 opens the first air supplement passage P21 and closes the second air supplement passage P22. At this time, the second air flow generated by the operation of the second suction source 22 flows through the second filter 32, so that the second filter 32 performs filtering work. At the same time, the third air flow generated from the air supplement port 11c to the first filter 31 through the first air supplement passage P21 reversely flows through the first filter 31, so that the first filter 31 performs self-cleaning.

[0075] When the self-cleaning assembly 40 is in the third position, the filter passage valve 42 closes the second filter passage P12 and opens the first filter passage P11, and the first air supplement passage valve 43 opens the first air supplement passage P21 and closes the second air supplement passage P22. At this time, the first air flow generated by the operation of the first suction source 21 flows through the first filter 31, so that the first filter 31 performs filtering work. At the same time, the fourth air flow generated from the air supplement port 11c to the second filter 32 through the second air supplement passage P22 reversely flows through the second filter 32, so that the second filter 32 performs self-cleaning.

[0076] According to the cleaning device 100 provided by the present disclosure, the filter passage valve 42 and the first air supplement passage valve 43 are driven by the driving member 41 to move integrally between the first position, the second position and the third position, so that the cleaning device 100 is switched between the normal working state, the self-cleaning state in which the first filter 31 is self-cleaned and the second filter 32 filters, and the self-cleaning state in which the second filter 32 is self-cleaned and the first filter 31 filters. Therefore, the cleaning device 100 provided by the present disclosure realizes the relatively complex working state switching by using a relatively simple structure.

[0077] Reference Figure 8 and Figure 10The first filter passage P11 includes a first filter flow passage port 421. The opening and closing of the first filter passage P11 is controlled by selectively opening and closing the first filter flow passage port 421 by driving the filter passage valve 42. The first filter passage P11 is divided by the first filter flow passage port 421 into a first suction source side filter passage P112 on the side close to the suction source assembly 20 and a first filter side filter passage P111 on the side close to the filter assembly 30. The second filter passage P12 includes a second filter flow passage port 422. The opening and closing of the second filter passage P12 is controlled by selectively opening and closing the second filter flow passage port 422 by driving the filter passage valve 42. The second filter passage P12 is divided by the second filter flow passage port 422 into a second suction source side filter passage P122 on the side close to the suction source assembly 20 and a second filter side filter passage P121 on the side close to the filter assembly 30. The first suction source side filter passage P112 and the second suction source side filter passage P122 are isolated from each other, and the first filter side filter passage P111 and the second filter side filter passage P121 are isolated from each other.

[0078] According to the above configuration, the first filter passage P11 and the second filter passage P12 are isolated from each other. That is, the cleaning device 100 can, under the control of the filter passage valve 42, cause the first filter passage P11 and the second filter passage P12 to independently perform a filtering operation, selectively open or close one of the filter passages when self-cleaning is required, and avoid cross contamination, thereby respectively and independently achieving switching of the self-cleaning state of the first filter passage P11 and the second filter passage P12.

[0079] Reference Figure 8 and Figure 11 The first air supplement passage P21 includes a first air supplement flow passage port 431. The opening and closing of the first air supplement passage P21 is controlled by selectively opening and closing the first air supplement flow passage port 431 by driving the first air supplement passage valve 43. The first air supplement passage P21 is divided by the first air supplement flow passage port 431 into a first air supplement port side air supplement passage P211 on the side close to the air supplement port 11c and a first filter side air supplement passage P212 on the side close to the filter assembly 30.

[0080] The second air supplement passage P22 includes a second air supplement flow passage port 432. The opening and closing of the second air supplement passage P22 is controlled by selectively opening and closing the second air supplement flow passage port 432 by driving the first air supplement passage valve 43. The second air supplement passage P22 is divided by the second air supplement flow passage port 432 into a second air supplement port side air supplement passage P221 on the side close to the air supplement port 11c and a second filter side air supplement passage P222 on the side close to the filter assembly 30.

[0081] The first air supplement port side air supplement passage P211 and the second air supplement port side air supplement passage P221 at least partially overlap, the first filter side air supplement passage P212 and the second filter side air supplement passage P222 are isolated from each other, and the first filter side air supplement passage P212 and the first filter side filter passage P111 at least partially overlap, and the second filter side air supplement passage P222 and the second filter side filter passage P121 at least partially overlap.

[0082] This configuration greatly simplifies the structure and improves the space utilization rate on the basis of ensuring the relative independence of the first air supplement passage P21, the second air supplement passage P22, the first filter passage P11, and the second filter passage P12.

[0083] When the self-cleaning assembly 40 is in the first position, the first air supplement passage valve 43 closes the first air supplement flow port 431 and the second air supplement flow port 432, the first air supplement port side air supplement passage P211 and the first filter side air supplement passage P212 are isolated, and the second air supplement port side air supplement passage P221 and the second filter side air supplement passage P222 are isolated. Although the first filter side air supplement passage P212 and the first filter side filter passage P111 at least partially overlap, external air will not flow into the first filter passage P11 through the first air supplement passage P21, ensuring the independence of the first filter passage P11 relative to the first air supplement passage P21 when the first filter 31 is performing filtering work. Similarly, although the second filter side air supplement passage P222 and the second filter side filter passage P121 at least partially overlap, external air will not flow into the second filter passage P12 through the second air supplement passage P22, ensuring the independence of the second filter passage P12 relative to the second air supplement passage P22 when the second filter 32 is performing filtering work.

[0084] When the self-cleaning assembly 40 is in the second position, the first air supplement passage valve 43 opens the first air supplement flow port 431 and closes the second air supplement flow port 432, the first air supplement port side air supplement passage P211 and the first filter side air supplement passage P212 are connected, and the second air supplement port side air supplement passage P221 and the second filter side air supplement passage P222 are isolated. Although the first air supplement port side air supplement passage P211 and the second air supplement port side air supplement passage P221 at least partially overlap, because the first filter side air supplement passage P212 and the second filter side air supplement passage P222 are isolated from each other, external air will only perform self-cleaning on the first filter 31 through the first air supplement passage P21, and will not flow into the second filter passage P12 through the second air supplement passage P22, ensuring the relative independence of the first air supplement passage P21 and the second filter passage P12 when the first filter 31 is performing self-cleaning and the second filter 32 is performing filtering work.

[0085] When the self-cleaning assembly 40 is in the third position, the first air supplement passage valve 43 closes the first air supplement flow port 431 and opens the second air supplement flow port 432, the first air supplement port side air supplement passage P211 is blocked from the first filter side air supplement passage P212, and the second air supplement port side air supplement passage P221 is connected to the second filter side air supplement passage P222. Although the first air supplement port side air supplement passage P211 and the second air supplement port side air supplement passage P221 at least partially overlap, because the first filter side air supplement passage P212 and the second filter side air supplement passage P222 are isolated from each other, external air only flows through the second air supplement passage P22 to clean the second filter 32, and does not flow into the first filter passage P11 through the first air supplement passage P21, thereby ensuring the relative independence of the second air supplement passage P22 and the first filter passage P11 when the second filter 32 is cleaned and the first filter 31 is filtering.

[0086] With reference to Figure 6 to Figure 10 , the housing 10 is provided with an air supplement cavity 12. The first air supplement port side air supplement passage P211 and the second air supplement port side air supplement passage P221 at least partially overlap in the air supplement cavity 12. The air supplement cavity 12 is provided with a third air supplement flow port 122 on the cavity wall 121, and the third air supplement flow port 122 is located upstream of the first air supplement flow port 431 and the second air supplement flow port 432. The third air supplement flow port 122 is connected to the air supplement port 11c.

[0087] The self-cleaning assembly 40 further comprises a second air supplement passage valve 44, and the filter passage valve 42, the first air supplement passage valve 43 and the second air supplement passage valve 44 are integrally moved between multiple positions by the driving member 41. In the first position, the second air supplement passage valve 44 blocks the third air supplement flow port 122. In any of the second position and the third position, the second air supplement passage valve 44 opens the third air supplement flow port 122.

[0088] According to the above configuration, when the self-cleaning assembly 40 is in the first position, the second air supplement passage valve 44 blocks the third air supplement flow port 122, and at the same time, the first air supplement passage valve 43 also closes the first air supplement flow port 431 and the second air supplement flow port 432. In this way, multiple blocks are formed in the first air supplement passage P21 and the second air supplement passage P22. When the first filter 31 and the second filter 32 are both filtering, external air cannot flow to the first filter 31 and the second filter 32 through the first air supplement passage P21 and the second air supplement passage P22. This avoids interference of air flow, maintains the negative pressure state inside the cleaning device 100, and ensures the stability of suction force and filtering performance.

[0089] With reference to Figure 6 , Figure 7 and Figure 11The cavity wall 121 of the air supplement cavity 12 includes a bottom wall 123 and two first side walls 124 opposite to each other in the first direction. The first air supplement flow passage opening 431 and the second air supplement flow passage opening 432 are arranged on the bottom wall 123 of the air supplement cavity 12. The two first side walls 124 are respectively provided with two third air supplement flow passage openings 122 facing each other in the first direction. The two second air supplement passage valves 44 corresponding to the two third air supplement flow passage openings 122 are arranged in the first direction.

[0090] According to the above configuration, the two first side walls 124 arranged in the first direction are respectively provided with the two third air supplement flow passage openings 122, and the two second air supplement passage valves 44 arranged in the first direction are respectively used to selectively open and close the two third air supplement flow passage openings 122. In this way, air supplement and pressure relief can be realized at the same time, thereby reducing the resistance of the second air supplement passage valve 44 opening and closing. Specifically, when the air supplement flow enters the air supplement cavity 12 through the third air supplement flow passage opening 122, the third air supplement flow passage opening 122 and the second air supplement passage valve 44 arranged symmetrically can balance the internal pressure of the air supplement cavity 12, avoiding the difficulty of opening and closing the second air supplement passage valve 44 due to excessive pressure or the internal airflow of the cleaning equipment 100 being disturbed.

[0091] Reference Figure 5 And Figure 6 The driving member 41 is an electromagnetic member, and the self-cleaning assembly 40 further includes a valve rod 45 and a first connecting portion 46. The valve rod 45 extends in the first direction and is slidable in the first direction. The electromagnetic member is magnetically coupled to the valve rod 45 and moves the self-cleaning assembly 40 as a whole between the plurality of positions by applying a magnetic driving force to the valve rod 45. The two second air supplement passage valves 44 are fixed to the valve rod 45. The first connecting portion 46 extends downward from the second air supplement passage valve 44 to the filter passage valve 42.

[0092] According to the above configuration of the self-cleaning assembly 40, the cleaning equipment 100 moves the self-cleaning assembly 40 as a whole between the plurality of positions by driving the valve rod 45 electromagnetically, thereby flexibly controlling the opening and closing of the air supplement passage P2. The first connecting portion 46 extends downward from the second air supplement passage valve 44 to the filter passage valve 42, ensuring that the self-cleaning assembly 40 can move as a whole in the cleaning equipment 100, thereby realizing accurate switching between the normal working state of the cleaning equipment 100, the self-cleaning state of the first filter 31 and the filtering state of the second filter 32, and the self-cleaning state of the second filter 32 and the filtering state of the first filter 31, and making the self-cleaning assembly 40 have a relatively simple structure.

[0093] Reference Figure 6 And Figure 11The second side wall 125 is provided with an elongated hole 126 extending along the first direction. The self-cleaning assembly 40 further comprises a second connecting portion 47 extending through the elongated hole 126 and being slidable within the elongated hole 126 along the first direction. One end of the second connecting portion 47 is connected to the filter passage valve 42, and the other end is connected to at least one of the first air supplement passage valve 43, the second air supplement passage valve 44, and the valve rod 45.

[0094] According to this configuration, when the valve rod 45 is driven by the driving member 41, the first air supplement passage valve 43, the second air supplement passage valve 44, and the filter passage valve 42 will be able to move integrally along the first direction among a plurality of positions. Moreover, this configuration of the self-cleaning assembly 40 has the advantages of simple structure and easy assembly.

[0095] Reference Figure 7 to Figure 12 The housing 10 comprises a first valve body 13, a second valve body 14, a lower cover 15, and a filter frame 16. The first valve body 13 cooperates with the second valve body 14 to form the air supplement cavity 12, and cooperates with the second valve body 14 and the lower cover 15 at the bottom of the air supplement cavity 12 to form a first transition cavity 151 and a second transition cavity 152 separated by a partition. The first filter side air supplement passage P212 and the first filter side filter passage P111 are at least partially located in the first transition cavity 151 and coincide in the first transition cavity 151. The second filter side air supplement passage P222 and the second filter side filter passage P121 are at least partially located in the second transition cavity 152 and coincide in the second transition cavity 152. The filter frame 16 is provided with a first filter cavity 161 and a second filter cavity 162 separated by a partition and respectively accommodating the first filter 31 and the second filter 32. The first transition cavity 151 communicates with the first filter cavity 161 below it, and the second transition cavity 152 communicates with the second filter cavity 162 below it. The first transition cavity 151 communicates with the first suction source 21 through a first filter flow port 421, and communicates with the air supplement cavity 12 through a first air supplement flow port 431. The second transition cavity 152 communicates with the second suction source 22 through a second filter flow port 422, and communicates with the air supplement cavity 12 through a second air supplement flow port 432.

[0096] By assembling the first valve body 13, the second valve body 14, the lower cover 15, and the filter frame 16 together, at least part of the first air supplement passage P21, the second air supplement passage P22, the first filter passage P11, and the second filter passage P12 are formed inside the housing 10. This configuration has the advantages of simple structure and easy installation.

[0097] Reference Figure 4 , Figure 7 and Figure 12The top portions of the two filters are connected together by the elastic frame 163. The elastic frame 163 is compressed between the lower cover 15 and the filter frame 16, and cooperates with the lower cover 15 and the filter frame 16 to form a first communication window 164 and a second communication window 165 that are separated from each other. The first filter cavity 161 communicates with the first transition cavity 151 through the first communication window 164, and the second filter cavity 162 communicates with the second transition cavity 152 through the second communication window 165.

[0098] Since the top portions of the two filters are connected together by the elastic frame 163, the two filters can be operated integrally during installation and replacement, which makes the installation and replacement operations more convenient. Through the cooperation of the elastic frame 163 with the lower cover 15 and the filter frame 16, the entirety of the first filter cavity 161 and the first transition cavity 151 is isolated from the entirety of the second filter cavity 162 and the second transition cavity 152, thereby allowing one filter to perform filtration while the other filter performs self-cleaning.

[0099] With reference to Figure 3 and Figure 13 The cleaning device 100 further includes a tray 50. The tray 50 cooperates with the lower cover 15 to form a first suction source side filter passage P112 and a second suction source side filter passage P122 that are separated from each other. The first suction source side filter passage P112 and the second suction source side filter passage P122 are located on one side of the air supplement cavity 12 in the second direction, and the first suction source side filter passage P112 and the second suction source side filter passage P122 are arranged along the first direction.

[0100] The tray 50 cooperates with the lower cover 15 to form a first suction source side filter passage P112 and a second suction source side filter passage P122 that are separated from each other. This configuration has the advantages of simple structure and easy disassembly. The first suction source side filter passage P112 and the second suction source side filter passage P122 are located on one side of the air supplement cavity 12 in the second direction, and the first suction source side filter passage P112 and the second suction source side filter passage P122 are arranged along the first direction, which can make full use of the space in the housing 10 and shorten the lengths of the two filter passages.

[0101] The cleaning device provided by the second embodiment of the present disclosure is substantially the same as the cleaning device provided by the first embodiment of the present disclosure. For the purpose of brevity, the differences between the two will be highlighted in the following description, and the same parts will not be described again.

[0102] With reference to Figure 14 to Figure 17In the second embodiment of the present disclosure, the cleaning assembly 40a further comprises a filter passage valve 48 in addition to the first air supplement passage valve 43, the second air supplement passage valve 44 and the filter passage valve 42. For the sake of distinction, the filter passage valve 42 is referred to as the first filter passage valve 42 hereinafter, and the filter passage valve 48 is referred to as the second filter passage valve 48. When the cleaning assembly 40a is driven by the driving member 41, the second filter passage valve 48 will move together with the other valves as a whole among a plurality of positions including the first position, the second position and the third position.

[0103] The first filter passage further comprises a first transition flow passage port 481 downstream of the first filter flow passage port 421, and a first transition passage P113 is provided between the first transition flow passage port 481 and the first filter flow passage port 421. In the direction from upstream to downstream, the first filter passage comprises in sequence the first filter side filter passage P111, the first filter flow passage port 421, the first transition passage P113, the first transition flow passage port 481 and the first suction source side filter passage P112. That is, the first filter flow passage port 421 separates the first filter side filter passage P111 and the first transition passage P113, and the first transition flow passage port 481 separates the first transition passage P113 and the first suction source side filter passage P112.

[0104] The second filter passage further comprises a second transition flow passage port 482 downstream of the second filter flow passage port 422, and a second transition passage P123 is provided between the second transition flow passage port 482 and the second filter flow passage port 422. In the direction from upstream to downstream, the second filter passage comprises in sequence the second filter side filter passage P121, the second filter flow passage port 422, the second transition passage P123, the second transition flow passage port 482 and the second suction source side filter passage P122. That is, the second filter flow passage port 422 separates the second filter side filter passage P121 and the second transition passage P123, and the second transition flow passage port 482 separates the second transition passage P123 and the second suction source side filter passage P122.

[0105] The first transition passage P113 and the second transition passage P123 at least partially overlap. The first transition passage P113 and the second transition passage P123 are also formed by the lower cover 15 and the tray 50a. The lower cover 15 is provided with a lower cover connecting portion 153, and the tray 50a is provided with a tray connecting portion 51, both of which are at least partially located in the overlapping portion of the first transition passage P113 and the second transition passage P123. The lower cover connecting portion 153 and the tray connecting portion 51 are fixedly connected, for example by fasteners such as screws, to fix the lower cover 15 and the tray 50a together and improve the connection strength thereof.

[0106] The second filter passage valve 48 is used to control the opening and closing of the first transition flow port 481 and the second transition flow port 482. Specifically, when the cleaning assembly 40a is in the first position, the second filter passage valve 48 opens both the first transition flow port 481 and the second transition flow port 482, allowing the first and second airflows to be generated; when the cleaning assembly 40a is in the second position, the second filter passage valve 48 closes the first transition flow port 481 and opens the second transition flow port 482, allowing the second airflow to be generated; when the cleaning assembly 40a is in the third position, the second filter passage valve 48 opens the first transition flow port 481 and closes the second transition flow port 482, allowing the first airflow to be generated.

[0107] In order to improve the connection strength of the lower cover 15 and the tray 50a, in the second embodiment of the present disclosure, the lower cover 15 and the tray 50a are respectively provided with a lower cover connecting portion 153 and a tray connecting portion 51. However, the lower cover connecting portion 153 and the tray connecting portion 51 occupy space and split the first filter passage and the second filter passage. Therefore, the first transition passage P113 and the second transition passage P123 for placing the lower cover connecting portion 153 and the tray connecting portion 51 are additionally provided, and the first transition flow port 481, the second transition flow port 482 and the second filter passage valve 48 are additionally provided correspondingly. Through the cooperation of the second filter passage valve 48, the first transition flow port 481 and the second transition flow port 482, when the two filters are selectively self-cleaned, the airflow flowing through the overlapping part of the first transition passage P113 and the second transition passage P123 will not be disturbed. This helps to avoid the occurrence of turbulent flow, thereby reducing the flow resistance and improving the operating efficiency of the cleaning equipment.

[0108] It should be noted that the various elements described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combination manners.

[0109] It should be understood that a plurality of components and / or parts can be provided by a single integrated component or part. Alternatively, a single integrated component or part can be divided into separate components and / or parts. The disclosure of "one" or "a" to describe a component or part does not say to exclude other components or parts.

[0110] It should be understood that although the terms "first" or "second" and the like can be used in the present utility model to describe various elements (such as the first air supplement suction source and the second suction source), these elements are not set by these terms, and these terms are only used to distinguish one element from another.

[0111] The basic principle of the present application is described above in combination with specific embodiments, however, it should be pointed out that the advantages, advantages, effects and the like mentioned in the present application are only examples and not limitations, and these advantages, advantages, effects and the like cannot be considered as the must-have of each embodiment of the present application. In addition, the above disclosed specific details are only for the purpose of example and for the purpose of understanding, and are not limited to the above specific details, and the above details do not limit the present application to be realized by the above specific details.

[0112] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A cleaning device, comprising: The housing is provided with an air inlet, an exhaust outlet, and a make-up air inlet; A suction source assembly for generating at least a partial vacuum within the housing to draw in airflow from the inlet and discharge it from the outlet; A filter assembly is used to filter out contaminants carried in the airflow drawn in from the air inlet under normal operating conditions. A filter channel is formed between the filter assembly and the suction source assembly, and an air supply channel is formed between the filter assembly and the air supply port. A self-cleaning component is used to at least partially close the filter channel and at least partially open the air supply channel in a self-cleaning state to clean the filter component. Its features are, The filtration channel includes at least a first filtration channel and a second filtration channel, and the air replenishment channel includes at least a first air replenishment channel and a second air replenishment channel. The self-cleaning component includes: Drive components; A filter channel valve, wherein the filter channel valve is driven by the drive component to control the opening and closing of the first filter channel and the second filter channel; The first air supply channel valve is driven by the driving component to control the opening and closing of the first air supply channel and the second air supply channel; in, Under normal operating conditions, the filter channel valve opens the first filter channel and the second filter channel, and the first air supply channel valve closes the first air supply channel and the second air supply channel. In self-cleaning mode, the filter channel valve opens the first filter channel and closes the second filter channel, and the first air supply channel valve closes the first air supply channel and opens the second air supply channel; or, the filter channel valve closes the first filter channel and opens the second filter channel, and the first air supply channel valve opens the first air supply channel and closes the second air supply channel.

2. The cleaning equipment according to claim 1, characterized in that, The filter assembly includes a first filter and a second filter; The suction source assembly includes a first suction source and a second suction source. When the first suction source is running, it generates a first airflow through the first filter to the first suction source. When the second suction source is running, it generates a second airflow through the second filter to the second suction source. The filter channel valve and the first air supply channel valve are driven by the drive unit to move integrally between multiple positions including a first position, a second position, and a third position; In the first position, the filter channel valve opens the first filter channel and the second filter channel, and the first air supply channel valve closes the first air supply channel and the second air supply channel to allow the first airflow and the second airflow to be generated; In the second position, the filter channel valve closes the first filter channel and opens the second filter channel to allow the second airflow to be generated, and the first air supply channel valve opens the first air supply channel and closes the second air supply channel to allow the third airflow from the air supply port through the first air supply channel to the first filter to be generated; as well as In the third position, the filter channel valve closes the second filter channel and opens the first filter channel to allow the first airflow to be generated, and the first replenishment channel valve opens the first replenishment channel and closes the second replenishment channel to allow the fourth airflow to be generated from the replenishment port through the second replenishment channel to the second filter.

3. The cleaning equipment according to claim 1 or 2, characterized in that: The first filter channel includes a first filter flow port. The opening and closing of the first filter channel is controlled by selectively opening or closing the first filter flow port by driving the filter channel valve. The first filter channel is divided by the first filter flow port into a first suction source side filter channel near the suction source assembly and a first filter side filter channel near the filter assembly. The second filter channel includes a second filter flow port. The opening and closing of the second filter channel is controlled by selectively opening and closing the second filter flow port by driving the filter channel valve. The second filter channel is divided by the second filter flow port into a second suction source side filter channel near the suction source assembly and a second filter side filter channel near the filter assembly. The first suction source side filter channel and the second suction source side filter channel are isolated from each other, and the first filter side filter channel and the second filter side filter channel are also isolated from each other.

4. The cleaning equipment according to claim 3, characterized in that: The first air supply channel includes a first air supply port. The opening and closing of the first air supply channel is controlled by selectively opening and closing the first air supply port by driving the first air supply channel valve. The first air supply channel is divided by the first air supply port into a first air supply port side air supply channel near the air supply port and a first filter side air supply channel near the filter assembly. The second air supply channel includes a second air supply port. The opening and closing of the second air supply channel is controlled by selectively opening and closing the second air supply port by driving the first air supply channel valve. The second air supply channel is divided by the second air supply port into a second air supply port side air supply channel near the air supply port and a second filter side air supply channel near the filter assembly. Wherein, the first air inlet side air supply channel and the second air inlet side air supply channel at least partially overlap, the first filter side air supply channel and the second filter side air supply channel are isolated from each other, and the first filter side air supply channel and the first filter side filtration channel at least partially overlap, and the second filter side air supply channel and the second filter side filtration channel at least partially overlap.

5. The cleaning equipment according to claim 4, characterized in that, The housing is provided with an air supply chamber; the first air supply port side air supply channel and the second air supply port side air supply channel are at least partially located in the air supply chamber and overlap in the air supply chamber; the air supply chamber wall is provided with a third air supply channel opening, the third air supply channel opening is located upstream of the first air supply channel opening and the second air supply channel opening; The self-cleaning assembly further includes a second air supply channel valve, wherein the filter channel valve, the first air supply channel valve, and the second air supply channel valve are driven by the drive member to move integrally between the plurality of positions; in the first position, the second air supply channel valve blocks the third air supply channel opening; in either the second or the third position, the second air supply channel valve opens the third air supply channel opening.

6. The cleaning equipment according to claim 5, characterized in that, The cavity wall of the air replenishment chamber includes a bottom wall and two first side walls opposite each other in a first direction. The first air replenishment inlet and the second air replenishment inlet are provided on the bottom wall of the air replenishment chamber, and the two first side walls are respectively provided with two third air replenishment inlets facing each other in the first direction. The two second air supply channel valves corresponding to the two third air supply channel openings are arranged at intervals in the first direction; The driving component is an electromagnetic component, and the self-cleaning assembly further includes a valve stem and a first connecting portion; the valve stem extends along the first direction and is slidable along the first direction; the electromagnetic component is magnetically coupled to the valve stem, and by applying a magnetic driving force to the valve stem, the self-cleaning assembly moves as a whole between the plurality of positions; the two second air supply channel valves are fixed on the valve stem, and the first connecting portion extends downward from the second air supply channel valves to connect with the filter channel valve.

7. The cleaning equipment according to claim 6, characterized in that, The air replenishment chamber has a second sidewall on one side in the second direction, which is perpendicular to the first direction. The second sidewall has an elongated hole extending along the first direction. The self-cleaning assembly also includes a second connecting part, which extends through the elongated hole and is slidable within the elongated hole along the first direction. One end of the second connecting part is connected to the filter channel valve, and the other end is connected to at least one of the first air replenishment channel valve, the second air replenishment channel valve, and the valve stem.

8. The cleaning equipment according to claim 7, characterized in that, The housing includes a first valve body, a second valve body, a lower cover, and a filter frame; the first valve body and the second valve body cooperate to form the air supply chamber, and cooperate with the second valve body and the lower cover at the bottom of the air supply chamber to form a first transition chamber and a second transition chamber separated from each other; the first filter-side air supply channel and the first filter-side filtration channel are at least partially located in the first transition chamber and overlap in the first transition chamber; the second filter-side air supply channel and the second filter-side filtration channel are at least partially located in the second transition chamber and overlap in the second transition chamber; The filter frame is provided with a first filter chamber and a second filter chamber that are separated from each other and respectively accommodate the first filter and the second filter. The first transition chamber is connected to the first filter chamber below it, and the second transition chamber is connected to the second filter chamber below it. The first transition chamber is connected to the first suction source through the first filter flow channel and to the replenishment chamber through the first replenishment flow channel. The second transition chamber is connected to the second suction source through the second filter flow channel and to the replenishment chamber through the second replenishment flow channel.

9. The cleaning equipment according to claim 8, characterized in that, The tops of the two filters are connected together by an elastic frame; the elastic frame is pressed between the lower cover and the filter frame, and cooperates with the lower cover and the filter frame to form a separated first and second communicating window; The first filter cavity is connected to the first transition cavity through the first connecting window, and the second filter cavity is connected to the second transition cavity through the second connecting window.

10. The cleaning equipment according to claim 8, characterized in that, It also includes a tray, which cooperates with the lower cover to form a first suction source side filter channel and a second suction source side filter channel that are separated from each other. The first suction source side filter channel and the second suction source side filter channel are located on one side of the air supply chamber in the second direction, and the first suction source side filter channel and the second suction source side filter channel are arranged along the first direction.

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