Cleaning apparatus

Abstract

The application discloses a cleaning device and belongs to the technical field of cleaning household appliances. The cleaning device comprises a machine body shell, a fan lower shell and a fan, the machine body shell defines a main air duct; the fan lower shell is arranged on the machine body shell and defines a first air inlet and a first air duct, the first air inlet is communicated with the main air duct; the fan is installed on the fan lower shell, the first air suction port of the fan is communicated with the first air inlet, and the first air outlet of the fan is communicated with the inlet of the first air duct; the axis of the fan and the axis of the main air duct form an acute angle. The first air suction port of the fan is communicated with the first air inlet and the main air duct, so that the fan can suck dirt through the main air duct, the dirt suction function is realized, the axis of the fan and the axis of the main air duct form an acute angle, the installation space is simplified, the angle at which the air of the main air duct enters the fan is smoothly changed, the air resistance is reduced, and the noise is lowered.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of cleaning household appliances, and particularly relates to a cleaning device. BACKGROUND

[0002] Cleaning devices are increasingly widely used in people's life, especially household cleaning devices, which are convenient to use and provide convenience for users to clean. Commonly used household cleaning devices generally use a fan as a power source to generate negative pressure in a sealed cylinder to suck dust, hair or sewage, etc., so as to achieve the purpose of cleaning. However, the airflow generated by the fan during operation will produce a large noise, which has a certain influence on the user experience. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a cleaning device to reduce the airflow noise generated by the operation of the fan in the cleaning device.

[0004] In a first aspect, the present application provides a cleaning device, comprising:

[0005] a machine body shell defining a main air duct;

[0006] a fan lower shell arranged in the machine body shell and defining a first air inlet and a first air duct, the first air inlet being in communication with the main air duct;

[0007] a fan installed in the fan lower shell, and a first air inlet of the fan being in communication with the first air inlet, and a first air outlet of the fan being in communication with an inlet of the first air duct; wherein

[0008] an axis of the fan forms an acute angle with an axis of the main air duct.

[0009] According to the cleaning device of the present application, the first air inlet is in communication with the first air inlet and the main air duct, so that the fan can suck dirt through the main air duct to realize the dirt suction function. By arranging the axis of the fan to form an acute angle with the axis of the main air duct, the angle of the wind of the main air duct entering the fan is smoothly overstepped while the installation space is simplified, the air resistance is reduced, and the noise is reduced.

[0010] According to an embodiment of the present application, an angle between the axis of the main air duct and the axis of the first air inlet is α, an angle between the axis of the first air inlet and the axis of the first air inlet is β, and the following conditions are met:

[0011] 90° < α ≤ β < 180°.

[0012] According to an embodiment of the present application, an angle between the axis of the main air duct and the axis of the first air inlet is α, and the following conditions are met:

[0013] 90° < a < 180°.

[0014] According to one embodiment of the present application, the angle between the axis of the first air inlet and the axis of the first air inlet is β, which satisfies:

[0015] 90° < β < 180°.

[0016] According to one embodiment of the present application, the first air inlet is located at the bottom of the fan, the first air outlet is located at the side of the fan, and the height of the first air duct at the side where the first air outlet is located is greater than the height of the first air duct at the opposite side of the first air outlet.

[0017] According to one embodiment of the present application, at least one of the first porous sound-absorbing member, the second porous sound-absorbing member, and the third porous sound-absorbing member is arranged in the first air duct.

[0018] The first porous sound-absorbing member is arranged towards the first air outlet.

[0019] The second porous sound-absorbing member is arranged in the middle part of the first air duct.

[0020] The third porous sound-absorbing member is arranged at the outlet of the first air duct.

[0021] According to one embodiment of the present application, the cleaning device further comprises at least one of a fourth porous sound-absorbing member and a fifth porous sound-absorbing member.

[0022] The fourth porous sound-absorbing member is located on the outer wall of the lower shell of the fan.

[0023] The fifth porous sound-absorbing member is located on the region of the inner wall of the body shell towards the fan.

[0024] According to one embodiment of the present application, the cleaning device further comprises:

[0025] A first soft rubber pad, the fan is supported on the lower shell of the fan through the first soft rubber pad.

[0026] According to one embodiment of the present application, the lower shell of the fan comprises:

[0027] A lower shell body, the fan is installed on the lower shell body, and the lower shell body defines the first air inlet.

[0028] An air duct cover, the air duct cover is connected with the lower shell body, and the air duct cover and the lower shell body define the first air duct.

[0029] According to one embodiment of the present application, a first sealing member is arranged at the connection between the air duct cover and the lower shell body.

[0030] According to one embodiment of the present application, the cleaning device further comprises:

[0031] a fan upper cover, which is installed on the upper part of the fan and defines a second air inlet communicating with the second air suction port of the fan;

[0032] a fixing support, which is installed on the outer side of the fan and clamped between the fan upper cover and the fan along the axial direction of the fan, the fixing support and the fan defining a second air duct, and the inlet of the second air duct communicating with the second air outlet of the fan, the fixing support being provided with a through hole communicating the second air duct with the external environment.

[0033] According to one embodiment of the present application, the inner side of the top of the fixing support is provided with a second sealing element, which is clamped between the fan upper cover and the fan;

[0034] and / or,

[0035] the outer side of the top of the fixing support is provided with a third sealing element, which is clamped between the fan upper cover and the lower shell of the fan;

[0036] and / or,

[0037] the outer side of the bottom of the fixing support is provided with a fourth sealing element, which is clamped between the fixing support and the outer wall of the fan.

[0038] According to one embodiment of the present application, the second sealing element is integrated with the fixing support;

[0039] and / or, the third sealing element is integrated with the fixing support;

[0040] and / or, the fourth sealing element is integrated with the fixing support.

[0041] According to one embodiment of the present application, a sixth porous sound-absorbing element is arranged between the outer side wall of the fixing support and the fan upper cover.

[0042] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0043] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, in which:

[0044] Figure 1 is one of the structural schematic diagrams of the cleaning device provided by the embodiments of the present application;

[0045] Figure 2 is a partial cross-sectional view of a cleaning device provided by an embodiment of the present application;

[0046] Figure 3 is Figure 2 is a partial enlarged view of

[0047] Figure 4 is a partial structural view of a cleaning device provided by an embodiment of the present application.

[0048] Reference signs:

[0049] cleaning device 100, cleaning assembly 110;

[0050] machine body shell 200, main air duct 210, fifth porous sound attenuation member 220;

[0051] fan lower shell 300, lower shell body 310, first air inlet 311, air duct cover 320, first air duct 330, first porous sound attenuation member 331, second porous sound attenuation member 332, third porous sound attenuation member 333, fourth porous sound attenuation member 340, second soft rubber pad 350, first sealing member 360;

[0052] fan 400, first air suction port 410, first air outlet 420, second air suction port 430, second air outlet 440, first soft rubber pad 450, fixed part 460;

[0053] fan upper cover 500, second air inlet 510;

[0054] fixed support 600, second sealing member 610, third sealing member 620, fourth sealing member 630, sixth porous sound attenuation member 640. DETAILED DESCRIPTION

[0055] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are examples for explaining the present application and should not be understood as limiting the present application.

[0056] The cleaning device 100 according to an embodiment of the present application is described below with reference to Figures 1-4 The cleaning device 100 according to an embodiment of the present application is described below with reference to

[0057] As shown in Figure 1 and Figure 2 In the present embodiment, the cleaning device 100 includes the machine body shell 200, the fan lower shell 300, and the fan 400.

[0058] The casing 200 defines the main air duct 210. A cleaning component 110 is installed at the lower end of the casing 200. The lower end of the main air duct 210 is connected to the air inlet of the cleaning component 110. The cleaning component 110 cleans the surface of the object, and the main air duct 210 provides negative pressure to suck away and recycle dust, hair, and sewage. The cleaning component 110 can be a floor brush component or a vacuuming component, and there are no restrictions on this.

[0059] The lower casing 300 of the fan is disposed on the body casing 200 and defines a first air inlet 311 and a first air duct 330. The first air inlet 311 is connected to the main air duct 210. The lower casing 300 is used to install the fan 400. The lower casing 300 is provided with the first air inlet 311, which is connected to the upper end of the main air duct 210. The lower casing 300 also defines the first air duct 330, which is used to discharge the dirt sucked up by the main air duct 210 into the collection device of the cleaning equipment 100.

[0060] In one example, the lower casing 300 of the fan can be fixedly connected to the casing 200.

[0061] In another example, the lower casing 300 of the fan can be fixedly connected to the main air duct 210 inside the casing 200.

[0062] A fan 400 is installed on the lower casing 300, with its first intake port 410 connected to the first air inlet 311 and its first outlet port 420 connected to the inlet of the first air duct 330. The fan 400 is fixedly mounted on the lower casing 300. The fan 400 creates negative pressure, which is then supplied to the main air duct 210 through the first intake port 410 and the first air inlet 311 to draw out contaminants. The first outlet port 420 is connected to the inlet of the first air duct 330, allowing the contaminants drawn up by the fan 400 to be transported through the outlet port 420 into the first air duct 330 for discharge from the fan 400 and the lower casing 300.

[0063] like Figure 2 As shown, the axis of the fan 400 forms an acute angle with the axis of the main air duct 210. By setting the angle γ between the axis of the fan 400 and the axis of the main air duct 210 to an acute angle, the airflow entering the fan 400 through the main air duct 210 forms a certain angle with the channel inside the fan 400. Compared with the airflow entering the fan perpendicularly through the main air duct in related technologies, in this embodiment, the airflow in the main air duct 210 forms an acute angle with the axis of the fan 400, resulting in a smoother trajectory for the airflow entering and exiting the fan 400.

[0064] And, the axis of the fan 400 is also arranged at an acute angle with the axis of the fuselage shell 200, which can optimize the installation space inside the fuselage shell 200. The gap between the fan lower shell 300 and the fuselage shell 200 can be used to install a circuit board and other control elements, which simplifies the installation space and makes the device smaller.

[0065] In actual implementation, the axis of the fan 400 is arranged at an acute angle with the axis of the main air duct 210. When installed, the installation structure can be more compact in cooperation with the installation position of the internal elements of the fuselage shell 200, which simplifies the installation space and occupies less space. Moreover, because the axis of the fan 400 is arranged at an acute angle with the axis of the main air duct 210, the airflow in the main air duct 210 enters the fan 400 through the first air inlet 311 and the first air suction port 410, and the airflow path of the airflow out of the fan 400 through the first air suction port 410 is arc-shaped, which makes the air path smoother, reduces the resistance of the airflow, and lowers the noise of the airflow.

[0066] According to the cleaning device 100 provided in the embodiments of the present application, the first air suction port 410 is communicated with the first air inlet 311 and the main air duct 210, so that the fan 400 can suck dirt through the main air duct 210 to realize the dirt suction function. By arranging the axis of the fan 400 at an acute angle with the axis of the main air duct 210, the airflow can be smoothly passed, the air resistance is reduced, and the noise is lowered while the installation space is simplified.

[0067] As shown in Figure 2 some embodiments, the cross-sectional size of the first air inlet 311 is gradually increased in the direction close to the main air duct to improve the suction power of the fan 400. To facilitate the connection of the first air inlet 311 with the main air duct 210 and the first air suction port 410, the cross-sectional size of the end of the first air inlet 311 connected with the main air duct 210 is the same as the cross-sectional size of the main air duct 210, and the cross-sectional size of the end of the first air inlet 311 connected with the first air suction port 410 is the same as the cross-sectional size of the first air suction port 410. The central axes of the two cross sections of the first air inlet 311 can be coaxial or non-coaxial, which is arranged according to the actual installation condition.

[0068] In some embodiments, the angle between the axis of the main air duct 210 and the axis of the first air inlet 311 is α, and the angle between the axis of the first air inlet 311 and the axis of the first air suction port 410 is β.

[0069] It can be understood that the greater the angles α and β, the smaller the resistance of the airflow when passing through the corner. The smaller the angles, the greater the resistance of the airflow when passing through the corner.

[0070] I. α and β can satisfy 90°<α≤β<180°.

[0071] As shown in Figure 2As shown, according to some embodiments of the present application, by setting the angle between the axis of the main air duct 210 and the axis of the first air inlet 311 as an obtuse angle, the airflow in the main air duct 210 enters the first air inlet 311 relatively smoothly and with less resistance.

[0072] By setting α≤β, the extension line of the airflow direction at the first air inlet 410 does not intersect with the airflow direction of the main channel, and the path of the airflow from the main channel through the first air inlet 311 and then through the first air inlet 410 is smoother and has less resistance.

[0073] While the resistance of the airflow through the first air inlet 311 and the first air inlet 410 is relatively reduced, the airflow enters the fan 400 in an S-shaped path, and the airflow has a certain angle with the inner cavity of the fan 400 when entering the fan 400, which has less resistance and lower sound.

[0074] Based on the present embodiment, in an example, α=100° and β=120°; in another example, α=120° and β=150°; and in yet another example, α=150° and β=160°.

[0075] II. α can satisfy 90°<α<180°.

[0076] According to some embodiments of the present application, by setting the angle between the axis of the main air duct 210 and the axis of the first air inlet 311 as an obtuse angle, the airflow in the main air duct 210 enters the first air inlet 311 in an arc-shaped air duct, which has less resistance and lower noise.

[0077] In some embodiments, the angle β between the axis of the first air inlet 311 and the axis of the first air inlet 410 can be less than or equal to α. At this time, the air duct of the airflow is in an S-shaped arc line, which can cooperate with the position of the first air outlet 420 of the fan 400. When the first air outlet 420 is located on the side wall of the fan 400 and is located on the opposite side of the outlet direction of the first air inlet 311, the path of the airflow exiting the fan 400 is smoother.

[0078] Based on the present embodiment, in an example, α=100° and β=100°; in another example, α=120° and β=100°; and in yet another example, α=150° and β=120°.

[0079] In some embodiments, the angle β between the axis of the first air inlet 311 and the axis of the first air inlet 410 can also be equal to 180°, so as to minimize the resistance between the first air inlet 311 and the first air inlet 410 and make the air path smoother.

[0080] Based on this embodiment, in one example, α = 100°; in another example, α = 120°; and in yet another example, α = 150°.

[0081] In some embodiments, the angle β between the axis of the first air inlet 311 and the axis of the first air intake 410 can be greater than 180°. In this case, the airflow duct is a C-shaped arc, which can be matched with the position of the first air outlet 420 of the fan 400. When the first air outlet 420 is located on the side wall of the fan 400 and is opposite to the outlet direction of the first air inlet 311, the path of the airflow exiting the fan 400 can be smoother.

[0082] Based on this embodiment, in one example, α = 100°, β = 120°; in another example, α = 120°, β = 150°; and in yet another example, α = 150°, β = 160°.

[0083] 3. β can satisfy: 90°<β<180°.

[0084] According to some embodiments of this application, by setting the angle between the axis of the first air inlet 311 and the axis of the first air intake 410 to an obtuse angle, the airflow is made to pass through the first air inlet 311 into the fan 400 in a relatively smooth manner with low resistance.

[0085] In some embodiments, the angle α between the axis of the main air duct 210 and the axis of the first air inlet 311 can be equal to 180°, so as to minimize the resistance between the main air duct 210 and the first air inlet 311 and reduce noise.

[0086] Based on this embodiment, in one example, β = 100°; in another example, β = 120°; and in yet another example, β = 150°.

[0087] like Figure 2 As shown, according to some embodiments of this application, the first intake port 410 can be located at the bottom of the fan 400, and the first outlet port 420 can be located on the side of the fan 400. The first intake port 410 is located at the bottom of the fan 400 to connect with the first air inlet 311, and the first outlet port 420 is located on the side of the fan 400. The axis of the first outlet port 420 extends radially along the fan 400, or the axis of the first outlet port 420 extends in a direction parallel to any diameter of the fan 400. Since the axis of the fan 400 is set at an angle to the main air duct 210, the axis of the first outlet port 420 is set at an obtuse angle to the axis of the main air duct 210, making the overall path of the airflow in the main air duct 210 flowing into the fan 400 and then flowing out through the first outlet port 420 smooth, with low airflow resistance and low noise.

[0088] like Figure 2 and Figure 4As shown, in this embodiment, the height of the first air duct 330 on the side where the first air outlet 420 is located can be greater than the height of the first air duct 330 on the opposite side of the first air outlet 420. The first air duct 330 is arranged around the fan 400, and the height of the first air duct 330 on the side where the first air outlet 420 is located is greater than the height of the first air duct 330 on the opposite side of the first air outlet 420. That is, the height of the inlet of the first air duct 330 is greater than the height of the outlet of the first air duct 330. The first air duct 330 is spirally arranged downward along the airflow direction. The spiral arrangement of the first air duct 330 causes the airflow to swirl within the first air duct 330, resulting in low airflow resistance. Furthermore, the spiral downward arrangement of the first air duct 330 results in a longer length. By extending the airflow path and reducing airflow resistance through the arrangement of the first air duct 330, airflow noise and noise at the outlet of the first air duct 330 are reduced.

[0089] like Figure 2 As shown, according to some embodiments of this application, at least one of a first porous silencer 331, a second porous silencer 332, and a third porous silencer 333 may be arranged within the first air duct 330. By providing the first porous silencer 331, the second porous silencer 332, and the third porous silencer 333, noise generated by airflow and the motor of the fan 400 can be reduced, thereby achieving a noise reduction effect. The first porous silencer 331, the second porous silencer 332, and the third porous silencer 333 can be selectively installed according to actual installation requirements; any one, any two, or all three can be installed.

[0090] Understandably, porous sound-absorbing components utilize their porous nature, allowing airflow to pass through small holes. Without affecting airflow, the multiple small cavities formed by the internal pores absorb sound, thus reducing noise.

[0091] In this embodiment, the first porous silencer 331 can be disposed facing the first air outlet 420. The first porous silencer 331 can be arranged in a ring shape. The first porous silencer 331 is arranged around the inner side wall of the fan lower casing 300. Furthermore, the first porous silencer 331 is at least partially opposite to the first air outlet 420, so that the gas flowing out of the first air outlet 420 will collide with the first porous silencer 331. While the first porous silencer 331 performs the first stage of silencer on the airflow entering the first air duct 330, it can also silence the noise emitted by the motor of the fan 400.

[0092] In this embodiment, the second porous silencer 332 can be arranged in the middle of the first air duct 330. By setting the second porous silencer 332 in the middle of the first air duct 330, the airflow can be filtered and silenced when it flows through the middle of the first air duct 330.

[0093] In this embodiment, the third porous sound-absorbing component 333 can be arranged at the outlet of the first air duct 330. By providing the third porous sound-absorbing component 333 at the outlet of the first air duct 330, the noise of the airflow being discharged to the outside can be reduced.

[0094] like Figure 2 As shown, according to some embodiments of this application, the cleaning device 100 may further include at least one of a fourth porous silencing element 340 and a fifth porous silencing element 220.

[0095] In this embodiment, the fourth porous sound-absorbing component 340 can be located on the outer wall of the fan lower casing 300, and the first porous sound-absorbing component 331 can be arranged around the outer wall of the fan lower casing 300 or along the circumferential portion of the fan lower casing 300. The fourth porous sound-absorbing component 340 reduces the noise transmitted from the fan 400 through the fan lower casing 300. At the same time, the fourth porous sound-absorbing component 340 can also abut against the internal structure of the casing 200, playing a role in vibration damping.

[0096] In this embodiment, the fifth porous sound-absorbing component 220 can be located on the inner wall of the housing 200 facing the fan 400. Since the axis of the fan 400 is set at an angle to the axis of the main air duct 210, and one end of the fan 400 is set close to the housing 200, by setting the fifth porous sound-absorbing component 220 inside the corresponding housing 200, the noise transmitted from the fan 400 through the housing 200 is reduced, and the fan 400 can also play a certain role in vibration reduction.

[0097] It should be noted that the materials of the first porous sound-absorbing component 331, the second porous sound-absorbing component 332, the third porous sound-absorbing component 333, the fourth porous sound-absorbing component 340, and the fifth porous sound-absorbing component 220 may include, but are not limited to, organic fibers, inorganic fibers, inorganic foam, and foamed plastics. The first porous sound-absorbing component 331, the second porous sound-absorbing component 332, the third porous sound-absorbing component 333, the fourth porous sound-absorbing component 340, and the fifth porous sound-absorbing component 220 may be arranged in the form of sound-absorbing cotton.

[0098] like Figure 2 As shown, according to some embodiments of this application, the cleaning device 100 may further include a first soft rubber pad 450, and the fan 400 is supported on the fan lower housing 300 by the first soft rubber pad 450. The first soft rubber pad 450 is disposed at the lower end of the fan 400 and is located between the first air intake 410 and the first air inlet 311. By providing the first soft rubber pad 450 between the fan 400 and the fan lower housing 300, the fan 400 is supported, the gap between the first air intake 410 and the first air inlet 311 is sealed, and the device also has a shock absorption function to reduce noise caused by vibration.

[0099] likeFigure 2 As shown, in some embodiments, the first soft rubber pad 450 can be arranged in a ring shape. The through hole in the middle of the first soft rubber pad 450 is used to connect the first air intake 410 and the first air inlet 311. To facilitate ventilation, the cross-sectional dimensions of the through hole of the first soft rubber pad 450 are the same as those of the first air intake 410 and the first air inlet 311 near the end of the first air intake 410. Furthermore, the side of the first soft rubber pad 450 facing the fan 400 can also be provided with a supporting part, which abuts against the periphery of the lower end of the fan 400 to improve the stability of the fan 400 installation.

[0100] like Figure 2 As shown, in some embodiments, the cleaning device 100 further includes a second soft rubber pad 350, and the lower end of the fan lower housing 300 is supported within the body housing 200 by the second soft rubber pad 350. Specifically, the second soft rubber pad 350 is disposed between the first air inlet 311 and the upper end of the main air duct 210. The second soft rubber pad 350 is arranged in a ring shape. By setting the second soft rubber pad 350, the gap between the first air inlet 311 and the main air duct 210 is sealed, and at the same time, it plays a role in shock absorption and support for the fan lower housing 300, which can reduce the noise caused by vibration.

[0101] It should be noted that the materials of the first soft rubber pad 450 and the second soft rubber pad 350 are not limited here, and can be, but are not limited to, natural rubber, styrene-butadiene rubber, fluororubber, silicone rubber, etc.

[0102] like Figure 2 As shown, according to some embodiments of this application, the fan lower housing 300 may include a lower housing 310 and an air duct cover 320. The fan 400 is mounted on the lower housing 310, the lower housing 310 defines a first air inlet 311, the air duct cover 320 is connected to the lower housing 310, and the air duct cover 320 and the lower housing 310 define a first air duct 330.

[0103] In this embodiment, a first air inlet 311 is located on the lower housing 310, which defines the portion of the first air duct 330 near the inlet. An air duct cover 320 is located on the outer side of the lower housing 310 and connected to it. The air duct cover 320 defines the portion of the first air duct 330 near the outlet. The first air duct 330 is defined by the air duct cover 320 and the lower housing 310 together. The air duct cover 320 is detachably mounted on the lower housing 310. By providing the air duct cover 320, the first air duct 330 is easy to clean and maintain.

[0104] like Figure 2 As shown, in some embodiments, the second porous muffler 332 and the third porous muffler 333 are disposed inside the duct cover 320, making it more convenient to clean and maintain the first duct 330 and replace the second porous muffler 332 and the third porous muffler 333 by disassembling the duct cover 320 and the lower housing 310.

[0105] like Figure 2 As shown in some embodiments of this application, a first sealing element 360 is provided at the connection between the duct cover 320 and the lower housing 310. By providing the first sealing element 360, the gap between the duct cover 320 and the lower housing 310 is sealed, preventing air and dust leakage from the gap, and also reducing noise caused by air leakage through small holes.

[0106] It should be noted that the first sealing element 360 can be a sealing gasket or a sealant. The sealing gasket can be a rubber sealing gasket, and the sealant can be a vulcanized sealant or a heat-transformation sealant, etc., without limitation.

[0107] In some embodiments, the duct cover 320 can also be integrally formed with the lower housing 310, which simplifies the installation structure and makes it easy to manufacture.

[0108] like Figures 2 to 4 As shown, according to some embodiments of this application, the cleaning device 100 also includes a fan cover 500 and a fixing bracket 600.

[0109] In this embodiment, the fan cover 500 is installed on the upper part of the fan 400 and defines a second air inlet 510 that communicates with the second air intake 430 of the fan 400. The fan cover 500 is installed on the upper part of the fan 400 and is connected to the fan lower casing 300 to form a sealed cavity, and the fan 400 generates negative pressure by working in the sealed cavity.

[0110] The fan cover 500 defines a second air inlet 510 that communicates with the second air intake 430 of the fan 400. The second air intake 430 of the fan 400 is located at the upper end of the fan 400. The second air inlet 510 is provided so that the fan 400 can absorb outside air through the second air intake 430 to cool the fan 400.

[0111] In this embodiment, the fixed bracket 600 is installed on the outside of the fan 400 and is clamped between the fan cover 500 and the fan 400 along the axial direction of the fan 400. The fixed bracket 600 and the fan 400 define a second air duct, and the inlet of the second air duct is connected to the second air outlet 440 of the fan 400. The fixed bracket 600 is provided with a through hole connecting the second air duct and the external environment.

[0112] The fan 400 has a fixing part 460 arranged around the axis of the fan 400 in the middle. The fixing bracket 600 is located on the outside of the fan 400, and the upper end of the fixing bracket 600 abuts against the upper cover 500 of the fan, and the lower end of the fixing bracket 600 abuts against the fixing part 460 of the fan 400, so as to fix the fan 400 between the upper cover 500 of the fan and the lower shell 300 of the fan. The fixing bracket 600 fixes the fan 400 and maintains the stability of the axis.

[0113] The fixing support 600 and the fan 400 define a second air duct, an inlet of the second air duct being in communication with the second air outlet 440 of the fan 400, the second air outlet 440 being arranged along the circumference of the fan 400, the fan 400 sucking external cold air through the second air inlet 430 to cool the motor of the fan 400, and discharging hot air through the second air duct to avoid overheating protection of the motor of the fan 400, so that the fan 400 can keep stable working.

[0114] As shown in Figure 2 and Figure 3 According to some embodiments of the present application, at least one of the second seal 610, the third seal 620 and the fourth seal 630 can be arranged on the fixing support 600.

[0115] In the present embodiment, the second seal 610 is arranged on the inner side of the top of the fixing support 600, and is clamped between the fan upper cover 500 and the fan 400. By arranging the second seal 610, the gap between the fixing support 600 and the fan 400 is sealed, so as to avoid gas leakage between the fixing support 600 and the fan 400.

[0116] In the present embodiment, the third seal 620 is arranged on the outer side of the top of the fixing support 600, and is clamped between the fan upper cover 500 and the fan lower shell 300. By arranging the third seal 620, the gap between the fan 400 and the fan lower shell 300 is sealed, so as to avoid gas leakage between the fan upper cover 500 and the fan lower shell 300.

[0117] In the present embodiment, the fourth seal 630 is arranged on the outer side of the bottom of the fixing support 600, and is clamped between the fixing support 600 and the outer wall of the fan 400. By arranging the fourth seal 630, the gap between the fixing support 600 and the fan 400 is sealed, so as to avoid gas leakage between the fixing support 600 and the fan 400, and isolate the first air duct 330 and the second air duct.

[0118] In an example, the fixing support 600, the fan 400, the second seal 610 and the fourth seal 630 define the second air duct.

[0119] As shown in Figure 2 and Figure 3As shown, according to some embodiments of this application, the second seal 610 is integrated with the fixed bracket 600; and / or, the third seal 620 is integrated with the fixed bracket 600; and / or, the fourth seal 630 is integrated with the fixed bracket 600. By integrating the second seal 610, the third seal 620, and the fourth seal 630 with the fixed bracket 600 into a single unit for assembly and production, processing and assembly are simplified.

[0120] It should be noted that the second seal 610, the third seal 620, and the fourth seal 630 can be sealing soft rubber. The materials of the second seal 610, the third seal 620, and the fourth seal 630 can be rubber, and the rubber can be, but is not limited to, natural rubber, styrene-butadiene rubber, fluororubber, and silicone rubber.

[0121] In other embodiments, the second seal 610, the third seal 620 and the fourth seal 630 may also be sleeved on the fixed bracket 600.

[0122] like Figure 2 and Figure 3 As shown, according to some embodiments of this application, a sixth porous sound-absorbing component 640 is provided between the outer wall of the fixed bracket 600 and the upper cover 500 of the fan. By providing the sixth porous sound-absorbing component 640, noise reduction is achieved for the airflow in the second air duct. The specific arrangement of the sixth porous sound-absorbing component 640 can refer to the aforementioned arrangement of porous sound-absorbing components, and will not be described in detail here.

[0123] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0124] In the description of this application, it should be understood that the terms "center", "length", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0125] In the description of the application, "first feature", "second feature" can include one or more of the features.

[0126] In the description of the application, "a plurality of" means two or more.

[0127] In the description of the application, "on" or "under" the first feature of the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0128] In the description of the application, "on", "above" and "over" the first feature of the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height.

[0129] In the description of the application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description of the application, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0130] Although the embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the application, and the scope of the application is defined by the claims and their equivalents.

Claims

1. A cleaning device, characterized in that, include: The fuselage housing defines the main air duct; The fan lower casing is disposed on the body casing and defines a first air inlet and a first air duct, wherein the first air inlet is connected to the main air duct; A fan is installed on the lower casing of the fan, and the first air inlet of the fan is connected to the first air outlet, and the first air outlet of the fan is connected to the inlet of the first air duct; wherein... The axis of the fan forms an acute angle with the axis of the main air duct; The angle between the axis of the main air duct and the axis of the first air inlet is α, and the angle between the axis of the first air inlet and the axis of the first air intake is β, satisfying: 90°＜α≤β＜180°； The first soft rubber pad supports the fan on its lower casing.

2. The cleaning equipment according to claim 1, characterized in that, The angle between the axis of the main air duct and the axis of the first air inlet is α, satisfying: 90°＜α＜180°。 3. The cleaning equipment according to claim 1, characterized in that, The angle between the axis of the first air inlet and the axis of the first air intake is β, satisfying: 90°＜β＜180°。 4. The cleaning equipment according to claim 1, characterized in that, The first air intake is located at the bottom of the fan, the first air outlet is located on the side of the fan, and the height of the first air duct on the side where the first air outlet is located is greater than the height of the first air duct on the opposite side of the first air outlet.

5. The cleaning equipment according to claim 1, characterized in that, The first air duct is provided with at least one of a first porous sound-absorbing component, a second porous sound-absorbing component, and a third porous sound-absorbing component; The first porous silencer is positioned facing the first air outlet; The second porous silencer is arranged in the middle of the first air duct; The third porous sound-absorbing component is arranged at the outlet of the first air duct.

6. The cleaning equipment according to claim 1, characterized in that, Also includes: At least one of the fourth and fifth porous mufflers; The fourth porous sound-absorbing component is located on the outer wall of the lower casing of the fan; The fifth porous sound-absorbing component is located on the inner wall of the casing in the area facing the fan.

7. The cleaning equipment according to claim 1, characterized in that, The lower casing of the fan includes: The lower housing has the fan mounted on it, and the lower housing defines the first air inlet. A duct cover is connected to the lower housing, and the duct cover and the lower housing define the first duct.

8. The cleaning equipment according to claim 7, characterized in that, A first sealing element is provided at the connection between the air duct cover and the lower housing.

9. The cleaning equipment according to any one of claims 1-8, characterized in that, Also includes: A fan top cover is installed on the upper part of the fan and defines a second air inlet that communicates with the second air intake of the fan. A fixed bracket is installed on the outside of the fan and clamped between the fan cover and the fan along the axial direction of the fan. The fixed bracket and the fan define a second air duct, and the inlet of the second air duct is connected to the second air outlet of the fan. The fixed bracket is provided with a through hole connecting the second air duct to the external environment.

10. The cleaning equipment according to claim 9, characterized in that, The top inner side of the fixed bracket is provided with a second sealing element, which is clamped between the fan cover and the fan. And / or, A third sealing element is provided on the top outer side of the fixed bracket, and the third sealing element is clamped between the upper cover of the fan and the lower casing of the fan; And / or, The bottom outer side of the fixed bracket is provided with a fourth sealing element, which is clamped between the fixed bracket and the outer wall of the fan.

11. The cleaning equipment according to claim 10, characterized in that, The second seal is integrated with the fixing bracket as one piece; And / or, the third seal is integrated with the fixing bracket as one unit; And / or, the fourth seal is integrated with the fixed bracket.

12. The cleaning equipment according to claim 9, characterized in that, A sixth perforated sound-absorbing component is provided between the outer wall of the fixed bracket and the top cover of the fan.

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