A separation module for a cleaning machine and a cleaning machine

Abstract

The present invention relates to a separation module for a cleaning machine and a cleaning machine. Among them, a separation module for a cleaning machine includes a housing with an internal cavity. The cavity has a first air inlet, a second air inlet and an air outlet. It is characterized in that it further includes a baffle located on the fluid flow path between the first air inlet and the air outlet, which divides the cavity into a first chamber and a second chamber that are connected to each other. The first chamber is arranged adjacent to the first air inlet; an air inlet channel located in the cavity, whose inlet is connected to the second air inlet and has an air outlet connected to the air outlet; a partition plate arranged in the second chamber and located on the fluid flow path between the first air inlet and the air outlet. A through hole is provided on the partition plate. Along the fluid flow path of the air outlet, the through hole is located downstream of the air outlet. The air flow flowing in through the first air inlet is mixed and collided with the air flow flowing out through the air inlet channel, and particles and / or water with a larger specific gravity can be further separated.

Description

Technical Field

[0001] The present invention belongs to the field of household washing and cleaning, and particularly relates to a separation module for a cleaning machine and a cleaning machine. Background Art

[0002] Currently, floor cleaning machines are vacuum cleaners or sweeping robots. In vacuum cleaners or sweeping robots, mixtures such as dust with moisture on the ground are sucked into their inner cavities. In order to separate the mixture of particulate matter and moisture, a separation device is usually used for separation at present.

[0003] For example, the Chinese invention patent "Vacuum Cleaner" with the patent number ZL201180061325.5 (the authorized publication number is CN103269630B) discloses a vacuum cleaner having a moving head that moves back and forth on the surface to be cleaned. The moving head has a front end and a rear end. It is characterized in that the moving head further has: a rotary brush placed in a brush chamber at the front end of the moving head. The brush chamber has an opening, and part of the rotary brush protrudes through the opening. The opening and the rotary brush generally span the entire width of the moving head; a fan; a motor for driving the rotary brush and the fan; a detachable dust collection chamber that generally spans the entire width of the moving head; a dust filter located between the dust collection chamber and the fan, and the dust filter also generally spans the entire width of the moving head; and an air flow duct connecting the brush chamber and the dust collection chamber. The front end of the air flow duct is generally tangent to the rotary brush, and the air flow duct generally spans the entire width of the moving head throughout the entire length of the air flow duct. In the above patent, the cleaning of the surface to be cleaned is achieved. However, the dust entering the dust collection chamber is only filtered by the dust filter, and its separation effect on the mixed air flow of dust, particles, etc. is poor, and it is easy to cause the dust filter to clog, affecting the separation efficiency, and the dust filter needs to be continuously replaced.

[0004] In order to solve the above technical problems, for another example, the Chinese invention patent application "Disposable Dust Collection Box Assembly and Sweeping Robot" with the patent application number CN201910995429.1 (the published application number is CN110638378A) discloses a disposable dust collection box assembly including a dust collection box located on a sweeping robot, and a disposable dust bag assembly is provided in the dust collection box; the disposable dust bag assembly is located in the dust collection box and includes: a disposable dust bag, which is a ventilated bag with one end open; a dust bag installation component for fixing the disposable dust bag in the dust collection box; the disposable dust bag or the disposable dust bag assembly can be taken out of the dust collection box. In the form of a dust bag, all the garbage can be taken out, but the dust bag needs to be continuously replaced, increasing the cost. In addition, a great deal of noise will be generated when a large amount of air flow enters through the inlet of the dust collection box. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a separation module for a cleaning machine that can achieve noise reduction while separating a mixed air flow in view of the current situation of the above-mentioned prior art.

[0006] The second technical problem to be solved by the present invention is to provide a separation module with improved noise reduction ability.

[0007] The third technical problem to be solved by the present invention is to provide a cleaning machine that can be used for both dry and wet cleaning.

[0008] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is as follows: A separation module for a cleaning machine includes

[0009] a housing having an internal cavity, the cavity having a first air inlet, a second air inlet and an air outlet, and along the fluid flow path, both the first air inlet and the second air inlet are located upstream of the air outlet;

[0010] Characterized in that it further includes

[0011] a baffle located in the cavity and on the fluid flow path between the first air inlet and the air outlet, and dividing the cavity into a first chamber and a second chamber that are connected and communicated, the first chamber being arranged adjacent to the first air inlet;

[0012] an air inlet channel located in the cavity, its inlet being connected to the second air inlet and having an air outlet connected to the air outlet;

[0013] a partition plate provided in the second chamber and on the fluid flow path between the first air inlet and the air outlet, the partition plate being provided with a through hole communicating the first air inlet and the air outlet, and along the fluid flow path of the air outlet, the through hole is located downstream of the air outlet.

[0014] In order to improve the noise reduction ability, there are at least two first air inlets, at least one air inlet channel, and the air inlet channel is located between the two first air inlets.

[0015] The technical solution adopted by the present invention to solve the above-mentioned second technical problem is as follows: The cross-section of the air inlet channel is square, the width of the square in the up and down direction is I y , the length of the square is I x , where I y and I x satisfy: The design of this air inlet channel can intercept the wide frequency spectrum of high-frequency noise, reducing the resonance with the later-stage fan noise.

[0016] To achieve the connection between the first chamber and the second chamber, the housing is vertically arranged, the baffle is vertically arranged, and there is a gap between the baffle and the bottom of the housing to connect the first chamber and the second chamber.

[0017] To better separate the particles with a relatively large specific gravity, a convex portion is protruded on the side wall of the baffle facing the oncoming flow direction. The existence of the convex portion reduces the fluid flow velocity. After the particles and / or water with a heavier specific gravity impact the first baffle, they are deposited along the first baffle at the bottom of the cavity. When there is water, the dust, particles and water condense and drip into the bottom of the cavity after passing through the convex portion, reducing the splashing of water, while the lighter particles flow towards the air outlet, achieving the separation of the particles with a relatively large specific gravity.

[0018] There are various structural forms of the convex portion. It can be in the form of strips, or in the form of blocks, or in other forms. However, preferably, the convex portion extends along the arrangement direction of the first air inlet and the second air inlet, and the baffle is provided with through holes penetrating its wall thickness at a position below the convex portion. The existence of the through holes allows the fluid to pass through and decelerates the passing fluid.

[0019] There are various forms of setting the partition plate. However, preferably, the partition plate divides the second chamber into an upper chamber and a lower chamber. The upper chamber is located above the lower chamber, and the air outlet of the air inlet channel is located in the upper chamber.

[0020] There are various structural forms of the partition plate. However, preferably, along the fluid flow path between the second air inlet and the air outlet, the partition plate sequentially includes a first baffle wall and a second baffle wall connected to the first baffle wall. The through opening includes a first opening and a second opening. The first opening is opened on the first baffle wall, and the second opening is opened on the second baffle wall. On the one hand, both the first opening and the second opening are sound-absorbing openings to achieve the purpose of noise reduction. On the other hand, the design of the first opening enables a part of the air flow filtered by the baffle to flow out through the first opening and mix with the air flow flowing out of the air inlet channel, generating vortices, increasing the number of collisions of the mixed air flow, and improving the separation effect; the second opening is located downstream of the first opening. Thus, another part of the air flow filtered by the baffle flows out through the second opening and mixes and collides with the previous mixed air flow to further improve the separation effect.

[0021] To further improve the separation effect, along the fluid flow path between the second air inlet and the air outlet, the first opening and the second opening are arranged at intervals; the first opening and the second opening each have a plurality of them, and they are both arranged at intervals along the arrangement direction of the first air inlet and the second air inlet.

[0022] In order to intercept a small part of peak noise, both the first opening and the second opening are polygonal holes, and the number of sides of the polygonal holes is S, where S ≥ P. The design form of the polygonal holes can eliminate peak noise and improve the noise reduction effect.

[0023] In order to divert the fluid flowing out through the air inlet channel, the first baffle has an inclined section that gradually inclines towards the second baffle from top to bottom, and the second baffle is an arc-shaped plate that is recessed downward as a whole.

[0024] In order to improve the sound absorption effect, the number of the first openings is m, the number of the second openings is n, and the number of the air inlet channels is p, where m ≥ 15p and n ≥ 12p.

[0025] Preferably, the hydraulic diameter of the first opening is d1, and the hydraulic diameter of the second opening is d2. The hydraulic diameter d1 and the hydraulic diameter d2 satisfy: d2 = (1.5 - 6)d1. In this way, peak noise can be better eliminated, and a better noise reduction effect is achieved.

[0026] In order to better intercept peak noise, the distance between adjacent two of the second openings is L, and the distance L and the hydraulic diameter d2 satisfy: L = (3 - 7)d2.

[0027] In order to better mix the air flow flowing out through the first opening and the second opening with the air flow flowing out through the air inlet channel, the profile of the cross-section of the first baffle satisfies: ax 3 +bx 2 +cx = 0.9 (0.45 ≤ x / h ≤ 0.6), where the parameters a, b, and c are all constants, and a + b / 3 - 2c = 0, and h is the width of the housing; the profile of the cross-section of the second baffle satisfies: dx 2 +gx = 1.6 (0.6 ≤ x / h ≤ 0.9, where the parameters d and g are all constants, and 5d = 2g.

[0028] Further preferably, the parameters a, b, and c satisfy: 1.5 < a < 1.8, 3 < b < 5.8, 1.25 < c < 1.86, and the parameters d and g satisfy: 0.8 < d < 1.4, 2 < g < 3.5.

[0029] In order to further improve the separation ability, the partition plate further includes a third baffle connected to the second baffle, and the profile of the cross-section of the third baffle satisfies: y = -1.2x + 3 (0.9 ≤ x / h < 1). In this way, the presence of the third baffle can collide with the air flow that does not flow out through the first opening and the second opening and intercept this part of the air flow, realizing the separation of this part of the air flow.

[0030] The technical solution adopted by the present invention to solve the above-mentioned third technical problem is as follows: A cleaning machine, characterized in that: it includes the above-mentioned separation module, and also includes a cleaning module and a blower. Along the air flow path, the separation module is located between the cleaning module and the blower, and the first air inlet and the second air inlet of the separation module are communicated with the outlet of the cleaning module, and the air outlet of the separation module is communicated with the inlet of the blower.

[0031] Compared with the prior art, the advantages of the present invention are as follows: When the air flow flowing in through the first air inlet collides with the baffle plate, particles and / or water with a relatively large specific gravity are deposited, and the lighter air flow flows downstream. After passing through the through-hole, it mixes and collides with the air flow flowing out through the air inlet channel, and particles and / or water with a relatively large specific gravity are further separated. The design of the air inlet channel is conducive to the mixing and agglomeration of the mixed air flow of dust, particles and / or water, buffers the flow of the mixed air flow, reduces the air flow velocity, and lays a foundation for the subsequent mixing and separation; and the through-hole can be used as a sound-absorbing port. Therefore, it has a certain effect on noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic structural diagram of this embodiment;

[0033] Figure 2 is Figure 1 a schematic structural diagram of another angle of

[0034] Figure 3 is Figure 2 a cross-sectional view at the first air inlet in

[0035] Figure 4 is Figure 2 a cross-sectional view at the second air inlet in

[0036] Figure 5 is Figure 1 a cross-sectional view of

[0037] Figure 6 is Figure 1 a schematic structural diagram of

[0038] Figure 7 is Figure 6 a cross-sectional view of

[0039] Figure 8 is a simulated air volume diagram of the separation module of this embodiment;

[0040] Figure 9 is a schematic partial structural diagram of the floor sweeper of this embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] The present invention will be further described in detail below in conjunction with the embodiments of the drawings.

[0042] As Figure 9 shown, the cleaning machine of the embodiment of the present invention includes a separation module 04, a cleaning module, and a fan 5. Along the air flow path, the separation module 04 is located between the cleaning module 01 and the fan 5, and the cleaning module 01 is located upstream of the separation module 04. The first air inlet 400 and the second air inlet 401 of the separation module 04 are connected to the outlet of the cleaning module 01, and the discharge port 403 of the separation module 04 is in fluid communication with the inlet of the fan 5. Under the action of the fan 5, a negative pressure is formed in the cleaning module and the separation module 04, so that garbage such as dust, water, and particles is sucked into the cleaning module through the dust suction port 111, and then the gas separated by the separation module 04 is discharged. The cleaning module can adopt any brush head structure in the existing floor sweeper, and will not be described in detail in this embodiment.

[0043] As Figures 1 to 7 shown, the separation module for the cleaning machine of this embodiment includes a housing 4, a baffle 42, an air inlet passage 44, a partition plate 43, and a filter element 48.

[0044] As Figure 3 and Figure 4 shown, the housing 4 is vertically arranged, and the interior of the housing 4 has a cavity 41. Two first air inlets 400 arranged at intervals in the front and rear and three second air inlets 401 are opened on the left side wall of the cavity 41, and the three second air inlets 401 are located between the two first air inlets 400. A discharge port 403 is opened on the top wall of the cavity 41. Along the fluid flow path, both the first air inlet 400 and the second air inlet 401 are located upstream of the discharge port 403, and a filter element 48, which is a filter net, is covered on the discharge port 403. It can be Figure 8 seen that the air volume at the two corner positions on both sides of the housing 4 is relatively large, and the air volume in the middle is relatively small compared with that on both sides.

[0045] As Figure 3 shown, the baffle 42 is vertically arranged in the cavity 41 and is located on the fluid flow path between the first air inlet 400 and the discharge port 403. As Figure 3 , Figure 4 and Figure 7 shown, the baffle 42 divides the cavity 41 into a first chamber 411 and a second chamber 412 that are connected and arranged in sequence from left to right. The first air inlet 400 is opened on the left side wall of the first chamber 411. A gap 413 for connecting the first chamber 411 and the second chamber 412 is left between the baffle 42 and the bottom of the housing 4. As Figure 7As shown, a convex portion 422 protrudes from the side wall of the baffle 42 facing the oncoming flow direction. The convex portion 422 extends longitudinally along the arrangement directions of the first air inlet 400 and the second air inlet 401. The baffle 42 is provided with a through hole 421 penetrating its wall thickness at a position below the convex portion 422. For details, see Figure 3 As shown, the particles with a larger specific gravity in the mixed air flow will settle to the bottom of the cavity. A sewage outlet and a cover plate for opening or closing the sewage outlet are provided on the bottom wall of the cavity. When it is necessary to clean the garbage, only the sewage outlet needs to be opened.

[0046] As Figure 3 shown, the partition plate 43 is arranged in the second chamber 412 and is located on the fluid flow path between the first air inlet 400 and the air outlet 403. As Figure 3 and Figure 7 shown, the partition plate 43 divides the second chamber 412 into an upper chamber 4121 and a lower chamber 4122 which are arranged up and down and communicated with each other. The upper chamber 4121 is located above the lower chamber 4122.

[0047] As Figures 3 to 5 and Figure 7 shown, each second air inlet 401 corresponds to an air inlet passage 44. The air inlet passage 44 penetrates the baffle. The cross-section of the air inlet passage 44 is rectangular. As Figure 2 shown, the width of the rectangle in the up and down direction is I y , and the length of the rectangle is I x , where I y and I x satisfy: The structures of the three air inlet passages 44 and their connection modes with the corresponding second air inlets 401 are the same. Hereinafter, one of the air inlet passages 44 will be taken as an example for description. As Figure 4 shown, the inlet of the air inlet passage 44 is communicated with the corresponding second air inlet 401, and has an air outlet 441 communicated with the air outlet 403. The air outlet 441 is located in the upper chamber 4121. Along the fluid flow path of the air outlet 441, the through port is located downstream of the air outlet 441. For details, see Figure 3 and Figure 4 shown.

[0048] As Figure 3 , Figure 4 and Figure 7As shown, along the fluid flow path between the second air inlet 401 and the air outlet 403, the above-mentioned partition plate 43 successively includes a first baffle wall 431, a second baffle wall 432 connected to the first baffle wall 431, and a third baffle wall 433 connected to the second baffle wall 432. A through hole communicating the upper chamber 4121 and the lower chamber 4122 is formed on the partition plate 43, and this through hole is a sound absorption hole. The through hole in this embodiment includes a first opening 4311 and a second opening 4321. The first opening 4311 is formed on the inclined section 4310 of the first baffle wall 431, and the second opening 4321 is formed on the second baffle wall 432. As Figure 3 shown, the above-mentioned first baffle wall 431 includes a blocking section 4313 that gradually inclines leftward from top to bottom and an inclined section 4310 that gradually inclines toward the second baffle wall 432 from top to bottom. The second baffle wall 432 is an arc-shaped plate that is integrally sunken downward. The blocking section 4313 is located on the right side of the baffle 42, and the third baffle wall 433 gradually inclines rightward from top to bottom. As Figure 3 shown, the profile line of the cross-section of the above-mentioned first baffle wall 431 satisfies: ax 3 +bx 2 +cx = 0.9, where 0.45 ≤ x / h ≤ 0.6, the parameters a, b, and c are all constants, and a + b / 3 - 2c = 0. The parameters a, b, and c satisfy: 1.5 < a < 1.8, 3 < b < 5.8, 1.25 < c < 1.86; the profile line of the cross-section of the second baffle wall 432 satisfies: dx 2 +gx = 1.6, where 0.6 ≤ x / h ≤ 0.9, the parameters d and g are all constants, and 5d = 2g. The parameters d and g satisfy: 0.8 < d < 1.4, 2 < g < 3.5; the profile line of the cross-section of the third baffle wall 433 satisfies: y = -1.2x + 3, where 0.9 ≤ x / h < 1, and h is the width of the cavity 41 of the housing 4 in the left-right direction.

[0049] As Figure 3 、 Figure 4 and Figure 7As shown, along the fluid flow path between the second air inlet 401 and the air outlet 403, the first openings 4311 and the second openings 432 are arranged at intervals from left to right. There are multiple first openings 4311, which are arranged at intervals front and back. There are multiple second openings 4321, which are arranged at intervals front and back. The number of the first openings 4311 is m, the number of the second openings 4321 is n, and the number of the air inlet channels 44 is p, where p = 3. In this embodiment, m≥15p and n≥12p. The above-mentioned first openings 4311 and second openings 4321 are both polygonal holes, and the number of sides of the polygonal holes is S, and S≥P. In this embodiment, S = 6 and S>P. The distance between two adjacent second openings 4321 is L, the hydraulic diameter of the first opening 4311 is d1, and the hydraulic diameter of the second opening 4321 is d2. The hydraulic diameter refers to four times the ratio of the cross-sectional area of the flow-through section to the perimeter. The distance L and the hydraulic diameter d2 satisfy: L=(3 - 7)d2, and the hydraulic diameter d1 and the hydraulic diameter d2 satisfy: d2=(1.5 - 6)d1. The vertical direction in the above-mentioned specification and claims includes but is not limited to the vertical direction.

[0050] In the description and claims of the present invention, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention. However, the use of these terms here is only for the purpose of convenience of description and is determined based on the exemplary orientations shown in the drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions should be regarded only as illustrative and not as limiting. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity.

[0051] As used in the present invention, "fluid communication" refers to the spatial position relationship between two components or parts (hereinafter uniformly referred to as the first part and the second part respectively), that is, a fluid (gas, liquid or a mixture of both) can flow or / and be transported from the first part along the flow path to the second part. It can be that the first part and the second part are directly connected, or the first part and the second part are indirectly connected through at least one third party. The third party can be a fluid passage such as a pipe, a channel, a conduit, a flow guide, a hole, a groove, etc., or a chamber allowing the fluid to flow through or a combination of the above.

Claims

1. A separation module for a cleaning machine, comprising a housing (4) having an internal cavity (41) with a first air inlet (400), a second air inlet (401) and an air outlet (403). Along the fluid flow path, both the first air inlet (400) and the second air inlet (401) are located upstream of the air outlet (403); It is characterized in that further comprising a baffle (42) disposed in the cavity (41) and located on the fluid flow path between the first air inlet (400) and the air outlet (403), dividing the cavity (41) into a first chamber (411) and a second chamber (412) that are in communication. The first chamber (411) is arranged adjacent to the first air inlet (400); an air inlet passage (44) located in the cavity (41), its inlet communicating with the second air inlet (401) and having an air outlet (441) communicating with the air outlet (403); a partition plate (43) disposed in the second chamber (412) and located on the fluid flow path between the first air inlet (400) and the air outlet (403). A through hole communicating the first air inlet (400) and the air outlet (403) is formed in the partition plate (43). Along the fluid flow path of the air outlet (441), the through hole is located downstream of the air outlet (441).

2. The separation module according to claim 1, wherein: There are at least two first air inlets (400), and at least one air inlet passage (44) located between the two first air inlets (400).

3. The separation module according to any one of claims 1 to 2, characterized in that: The housing (4) is vertically arranged, the baffle (42) is vertically arranged, and a gap (413) communicating the first chamber (411) and the second chamber (412) is left between the baffle (42) and the bottom of the housing (4).

4. The separation module according to claim 3, wherein: A convex portion (422) protrudes from the side wall of the baffle (42) facing the oncoming flow direction.

5. The separation module according to claim 4, wherein: The convex portion (422) extends along the arrangement direction of the first air inlet (400) and the second air inlet (401), and a through hole (421) penetrating its wall thickness is formed in the baffle (42) at a position below the convex portion (422).

6. The separation module according to claim 1, characterized in that: The partition plate (43) divides the second chamber (412) into an upper chamber (4121) and a lower chamber (4122). The upper chamber (4121) is located above the lower chamber (4122), and the air outlet (441) of the air inlet passage (44) is located in the upper chamber (4121).

7. The separation module according to claim 6, characterized in that: Along the fluid flow path between the second air inlet (401) and the air outlet (403), the partition plate (43) sequentially includes a first baffle wall (431) and a second baffle wall (432) connected to the first baffle wall (431). The through hole includes a first opening (4311) and a second opening (4321). The first opening (4311) is formed in the first baffle wall (431), and the second opening (4321) is formed in the second baffle wall (432).

8. The separation module according to claim 7, wherein: Along the fluid flow path between the second air inlet (401) and the air outlet (403), the first opening (4311) and the second opening (4321) are arranged at intervals; there are multiple first openings (4311) and second openings (4321), and they are all arranged at intervals along the arrangement direction of the first air inlet (400) and the second air inlet (401).

9. The separation module according to claim 8, wherein: The number of the first openings (4311) is m, the number of the second openings (4321) is n, and the number of the air inlet channels (44) is p, where m≥15p and n≥12p.

10. The separation module according to claim 9, characterized in that: Both the first openings (4311) and the second openings (4321) are polygonal holes, and the number of sides of the polygonal holes is S, and the number of sides S≥p.

11. The separation module according to claim 10, characterized in that: The hydraulic diameter of the first opening (4311) is d1, and the hydraulic diameter of the second opening (4321) is d2. The hydraulic diameter d1 and the hydraulic diameter d2 satisfy: d2 = (1.5 to 6)d1.

12. The separation module according to claim 11, wherein: The distance between two adjacent second openings (4321) is L, and the distance L and the hydraulic diameter d2 satisfy: L = (3 to 7)d2.

13. The separation module according to claim 7, wherein: The first baffle (431) has an inclined section (4310) that gradually inclines downward toward the second baffle (432), and the second baffle (432) is an arc-shaped plate that is recessed downward as a whole.

14. A cleaning machine, characterized in that: It includes the separation module (04) described in any one of claims 1 to 13, and also includes a cleaning module (01) and a fan (5). Along the air flow path, the separation module (04) is located between the cleaning module (01) and the fan (5), and the first air inlet (400) and the second air inlet (401) of the separation module (04) are connected to the outlet of the cleaning module (01), and the air outlet (403) of the separation module is connected to the inlet of the fan (5).

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