Suction device and cleaning apparatus
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-04-11
- Publication Date
- 2026-03-11
Smart Images

Figure CN2024087291_14112024_PF_FP_ABST
Abstract
Description
SUCTION DEVICE AND CLEANING APPARATUSTECHNICAL FIELD
[0001] The disclosure relates to the technical field of cleaning apparatuses, in particular to a suction device and a cleaning apparatus.BACKGROUND
[0002] At present, an air blower is generally adopted as a power source in a cleaning apparatus, such as a vacuum cleaner, a sweeping robot, a floor scrubber, a handheld vacuum cleaner, etc. to generate a suction airflow, which is used to remove dirt such as dust, liquid, mites, etc. from a surface to be cleaned such as the ground and a bed surface by way of suction, and cooperates with a cleaning roller at a bottom of the cleaning apparatus and a driving motor for the cleaning roller to achieve cleaning.
[0003] When the cleaning apparatus operates, there is noise generated, causing noise troubles to users and affecting user experience.SUMMARY
[0004] In view of this, a suction device and a cleaning apparatus are provided in this disclosure.
[0005] A suction device is provided in a first aspect of this disclosure, which includes:
[0006] a housing, forming an installation cavity inside;
[0007] an air blower, arranged in the installation cavity and configured for generate a suction airflow; and
[0008] an elastic member, connected to the housing and the air blower;
[0009] wherein there is a clearance space between the air blower and the housing in at least one of vibration directions of the air blower.
[0010] In the suction device according to the embodiments of the disclosure, an elastic member is connected to the air blower and the housing, so that the air blower can be provided with elastic cushioning during vibration. In at least one of vibration directions of the air blower, there is a clearance space between the air blower and the housing for the air blower to vibrate, so that contact between the air blower and the housing can be reduced, and vibration of the air blower is isolated from an inner wall of the housing, thus weakening the vibration noise and realizing vibration and noise reduction of the air blower.
[0011] A cleaning apparatus is provided in a second aspect of this disclosure, which includes a body, a recovery device, and a suction device, wherein the recovery device and the suction device are installed on the body, and the recovery device is communicated with the suction device to recover dirt through suction airflow generated by the suction device.
[0012] A cleaning apparatus is provided in a third aspect of this disclosure, which includes a body and following components installed to the body:
[0013] a cleaning device including a driving mechanism and a cleaning part connected with the driving mechanism, the driving mechanism being configured for driving the cleaning part to clean an object to be cleaned;
[0014] a suction device configured for generating a suction airflow to remove dirt from a surface of the object to be cleaned by suction, the suction device being provided with an air inlet and an air outlet; and
[0015] a recovery device configured for recovering the dirt suctioned by the suction device, and provided with an inlet and an outlet, wherein the dirt enters the recovery device from the inlet, and the outlet is communicated with the air inlet to form an air inlet channel, and an airflow enters the suction device from an air inlet channel and exists from the air outlet into the air outlet channel;
[0016] noise reduction structures are provided at least two of the cleaning device, the suction device, the air inlet channel and the air outlet channel to reduce noise generated at the at least two of the cleaning device, the suction device, the air inlet channel and the air outlet channel.BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to explain technical schemes in embodiments of the present disclosure more clearly, the drawings required in the description of the embodiments will be briefly introduced below; obviously, the drawings in the following description are some of the embodiments of the present disclosure, and other drawings can be obtained according to these drawings by those of ordinary skill in the art without paying creative labor.
[0018] FIG. 1 is a schematic structural diagram of a cleaning apparatus according to an embodiment of the present disclosure, which shows a flow path of an airflow;
[0019] FIG. 2 is a schematic sectional view of the cleaning apparatus according to an embodiment of the disclosure in a fore-and-aft direction;
[0020] FIG. 3 is a schematic sectional view of a partial structure in FIG. 2, which shows a flow path of an airflow;
[0021] FIG. 4 is a schematic sectional view of the cleaning apparatus according to an embodiment of the present disclosure in a left-right direction;
[0022] FIG. 5 is a schematic sectional view of a partial structure in FIG. 4;
[0023] FIG. 6 is a schematic structural view of the cleaning device according to an embodiment of the present disclosure;
[0024] FIG. 7 is a schematic structural view of a driving mechanism according to an embodiment of the present disclosure in a first perspective;
[0025] FIG. 8 is a schematic structural view of the driving mechanism according to an embodiment of the present disclosure in a second perspective;
[0026] FIG. 9 is a schematic structural diagram of a vibration noise reduction structure provided in the suction device according to an embodiment of the present disclosure;
[0027] FIG. 10 is a schematic structural diagram of a first variation configuration of the vibration noise reduction structure according to an embodiment of the present disclosure;
[0028] FIG. 11 is a schematic structural diagram of a second variation configuration of the vibration noise reduction structure according to an embodiment of the present disclosure;
[0029] FIG. 12 is a schematic diagram of a first elastic member and a second elastic member in the structure shown in FIG. 3 in an initial state;
[0030] FIG. 13 is a schematic structural diagram of a third variation configuration of the vibration noise reduction structure according to an embodiment of the present disclosure;
[0031] FIG. 14 is a schematic structural diagram of a fourth variation configuration of the vibration noise reduction structure according to an embodiment of the present disclosure;
[0032] FIG. 15 is a schematic structural diagram of a fifth variation configuration of the vibration noise reduction structure according to an embodiment of the present disclosure;
[0033] FIG. 16 is a schematic structural diagram of a sixth variation configuration of the vibration noise reduction structure according to an embodiment of the present disclosure;
[0034] FIG. 17 is a schematic structural diagram of a seventh variation configuration of the vibration noise reduction structure according to an embodiment of the present disclosure;
[0035] FIG. 18 is a schematic view of a housing according to an embodiment of the present disclosure in a first perspective;
[0036] FIG. 19 is a schematic view of a housing according to an embodiment of the present disclosure in a second perspective;
[0037] FIG. 20 is a schematic view of an elastic member according to an embodiment of the present disclosure in an initial state;
[0038] FIG. 21 is a schematic structural view of the elastic member according to an embodiment of the present disclosure;
[0039] FIG. 22 is a schematic sectional view of the elastic member according to an embodiment of the present disclosure;
[0040] FIG. 23 is a schematic structural view of a recovery device according to an embodiment of the present disclosure;
[0041] FIG. 24 is a schematic sectional view of the recovery device according to an embodiment of the present disclosure;
[0042] FIG. 25 is an enlarged schematic view of a partial structure in FIG. 23;
[0043] FIG. 26 is a schematic sectional view of the recovery device according to an embodiment of the present disclosure in a fore-and-aft direction;
[0044] FIG. 27 is a schematic structural diagram of a sound absorption plate according to an embodiment of the present disclosure; and
[0045] FIG. 28 is a schematic structural diagram of a sound absorption structure according to an embodiment of the present disclosure.
[0046] DETAILED DESCRIPTION OF THE EMBODIMENTS
[0047] In the following, technical schemes in embodiments of the disclosure will be described clearly and completely in connection with the attached drawings of the embodiments of this disclosure; obviously, the described embodiments are intended to be a part of the embodiments of the disclosure, but not all of them. On a basis of the embodiments in this disclosure, all other embodiments obtained by the ordinary skilled in the art without any creative effort are within the protection scope of this disclosure.
[0048] It should also be understood that terms used in the specification of this disclosure are only for a purpose of describing specific embodiments and are not intended to limit the disclosure. As used in this specification and appended claims, singular forms of "a" , "an" and "the" are intended to include plural forms, unless otherwise clearly indicated in the context.
[0049] It should be further understood that a term “and / or” used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.
[0050] At present, an air blower is generally adopted as a power source in a cleaning apparatus, such as a vacuum cleaner, a sweeping robot, a floor scrubber, a handheld vacuum cleaner, etc. to generate a suction airflow, to remove dirt such as dust, liquid, mites, etc. from a surface to be cleaned such as the ground and a bed surface by suction, and cooperates with a cleaning roller at a bottom of the cleaning apparatus and a driving motor for the cleaning roller to achieve cleaning.
[0051] When the cleaning apparatus operates, there are generally multiple parts that generate noise at the same time. For example, the air blower and the driving motor of the roller may generate noise due to mechanical vibration, and the air blower may also generate obvious fluid noise due to a high-speed airflow at an air inlet and an air outlet, thus causing noise troubles to users and affecting user experience.
[0052] Therefore, a cleaning apparatus is provided in embodiments of the disclosure, the cleaning apparatus is provided with at least two noise reduction structures, so that noise of the whole machine can be effectively reduced, and acoustic characteristics of the whole machine are guaranteed.
[0053] Referring to FIGS. 1 to 5, a cleaning apparatus 100 is provided in some embodiments of the present disclosure. The cleaning apparatus 100 includes a cleaning device 10, a suction device 20, and a recovery device 30. The cleaning device 10 includes a driving mechanism 11 and a cleaning part 12 connected to the driving mechanism 11, and the driving mechanism 11 is configured for driving the cleaning part 12 to clean an object to be cleaned. The suction device 20 is configured for generating a suction airflow to suck dirt on a surface of the object to be cleaned, and the suction device 20 is provided with an air inlet 21 and an air outlet 22. The recovery device 30 is configured to recover the dirt suctioned by the suction device 20. The recovery device 30 is provided with an inlet 31 and an outlet 32, the dirt enters the recovery device 30 from the inlet 31. The outlet 32 is communicated with the air inlet 21 to form an air inlet channel 25, an airflow enters the suction device 20 from the air inlet channel 25 and exiting from the air outlet 22 into an air outlet channel 26. Noise reduction structures 50 are provided at least two of the cleaning device 10, the suction device 20, the air inlet channel 25, and the air outlet channel 26 to reduce noise generated at the at least two of the cleaning device 10, the suction device 20, the air inlet channel 25, and the air outlet channel 26.
[0054] In the cleaning apparatus 100 according to the embodiment of the disclosure, at least two of the cleaning device 10, the suction device 20, the air inlet channel 25, and the air outlet channel 26 are provided with noise reduction structures 50. The noise reduction structure 50 at the cleaning device 10 can reduce noise generated by vibration of the driving mechanism 11 by attenuating transmission of vibration of the driving mechanism 11 and / or isolating vibration noise of the driving mechanism 11; the noise reduction structure 50 at the suction device 20 can reduce noise generated by vibration of the suction device 20 by attenuating transmission of vibration of the suction device 20 and / or isolating vibration noise of the suction device 20 and / or absorbing the vibration noise using a sound absorption structure; the noise reduction structure 50 at the air inlet channel 25 can reduce fluid noise generated at the air inlet of the suction device 20 by absorbing noise at the air inlet using a sound absorption structure or isolating noise at the air inlet; and the noise reduction structure 50 at the air outlet channel 26 can reduce the fluid noise generated at the air outlet of the suction device 20 by absorbing noise at the air outlet using a sound absorption structure or isolating noise at the air outlet. Due to noise generated from multiple positions, such as the cleaning device 10, the suction device 20, the air inlet channel 25, and the air outlet channel 26, users may simultaneously perceive these noises, which will negatively impact user experience. Addressing noise reduction in just one part through a singular approach is insufficient to achieve overall noise reduction for the entire machine. Therefore, in the embodiment of the disclosure, noise reduction structures 50 are provided to at least two of the cleaning device 10, the suction device 20, the air inlet channel 25, and the air outlet channel 26, which can effectively reduce noise of the entire machine and ensure acoustic characteristics of the entire machine.
[0055] For example, any two or three of the cleaning device 10, the suction device 20, the air inlet channel 25, and the air outlet channel 26 may be provided with the noise reduction structures 50; or the cleaning device 10, the suction device 20, the air inlet channel 25, and the air outlet channel 26 may all be provided with the noise reduction structures 50. The noise reduction structure 50 at the cleaning device 10 can reduce noise generated by vibration of the driving mechanism 11 by attenuating transmission of vibration of the driving mechanism 11 and / or isolating vibration noise of the driving mechanism 11; the noise reduction structure 50 at the suction device 20 can reduce noise generated by vibration of the suction device 20 by attenuating transmission of vibration of the suction device 20 and / or isolating vibration noise of the suction device 20 and / or absorbing the vibration noise using a sound absorption structure; the noise reduction structure 50 at the air inlet channel 25 can reduce fluid noise generated at the air inlet of the suction device 20 by absorbing noise at the air inlet using a sound absorption structure or isolating noise at the air inlet; and the noise reduction structure 50 at the air outlet channel 26 can reduce the fluid noise generated at the air outlet of the suction device 20 by absorbing noise at the air outlet using a sound absorption structure or isolating noise at the air outlet, thus improving noise reduction effect of the whole machine.
[0056] In some embodiments, as shown in FIGS. 1, 2, and 4, the cleaning apparatus 100 further includes a body 60, and the cleaning device 10, the suction device 20, and the recovery device 30 are all installed on the body 60. The cleaning apparatus 100 may be a household device such as a vacuum cleaner, a sweeping robot, a floor scrubber, a handheld vacuum cleaner, etc., which adopts the air blower 24 as a power source. In the present embodiment, the cleaning apparatus 100 may be a floor scrubber.
[0057] In some embodiments, the recovery device 30 may be a dust box or a sewage tank.
[0058] In some embodiments, as shown in FIGS. 1, 2, and 4, the recovery device 30 includes a sewage tank to recover dirt from the surface of the object to be cleaned, and the sewage tank is detachably installed on the body 60 for facilitating cleaning of dirt in the sewage tank. The sewage tank may be detachably connected to the body 60 by way of magnetic attraction, buckles, screws, etc.
[0059] In some embodiments, as shown in FIGS. 4, and 6 to 8, the noise reduction structure 50 at the cleaning device 10 includes a vibration reduction structure 50a, and the cleaning device 10 further includes a bottom shell 13. The driving mechanism 11 and the cleaning part 12 are installed on the bottom shell 13. The driving mechanism 11 includes a driver 111 and a transmission assembly 112 connected to the driver 111. The transmission assembly 112 is connected to the cleaning part 12, and the driver 111 is configured for driving the transmission assembly 112 to drive the cleaning part 12 to rotate. Illustratively, the cleaning part 12 may be a roller which is rotatably connected to the bottom shell 13.
[0060] When in use, the roller is driven by the driver 111 to rotate and clean the ground. During a cleaning process, clean water is sprayed from water spray holes on the bottom shell 13 to wet the roller (the water spray holes are communicated with a clean water tank through a pipeline, and the clean water tank may be installed on the bottom shell 13 or the body 60) , and then the roller rotates to wipe dirt on the ground, and then the dirt and sewage adhered to the roller are scraped off by a scraper on the bottom shell 13 and suctioned into the sewage tank by the suction device 20 to be collected.
[0061] Illustratively, the driver 111 may be a motor, and the transmission assembly 112 may include a gear box, a transmission belt, and a connecting shaft. The gear box is connected to an output shaft of the motor, and the connecting shaft is connected to the roller. The transmission belt is connected to the gear box and the connecting shaft, the motor drives the gear box to rotate, and the connecting shaft is driven by the transmission belt to drive the roller to rotate. It can be understood that the implementation methods of the driver 111 and the transmission assembly 112 are not limited to this, and can be any existing implementation method, which will not be repeated here.
[0062] In some embodiments, as shown in FIGS. 7 and 8, the vibration reduction structure 50a includes a first vibration reduction structure 51, the first vibration reduction structure 51 is arranged between the driver 111 and the bottom shell 13, in particular, is wrapped on an outer wall of the driver 111. In this embodiment, the first vibration reduction structure 51 may be an annular elastic vibration reduction body. The elastic vibration reduction body is abutted between the outer wall of the driver 111 and the inner wall of the bottom shell 13, and may be connected by means of a snap structure, etc. With provision of the first vibration reduction structure 51, transmission of vibration of the driver 111 is attenuated, thereby reducing vibration from the driver 111, reducing noise that caused by the vibration of the driver 111 in operating transmitted to the bottom shell 13, and improving user experience.
[0063] In some embodiments, as shown in FIGS. 7 and 8, the vibration reduction structure 50a includes a second vibration reduction structure 52, and the second vibration reduction structure 52 is arranged at a connection between the transmission assembly 112 and the bottom shell 13. In this embodiment, the second vibration reduction structure 52 may be an I-shaped elastic vibration reduction body and connected by a screw, and the elastic vibration reduction body is abutted between the transmission assembly 112 and the bottom shell 13. A vibration force and vibration amplitude of the transmission assembly 112 can be reduced with provision of the second vibration reduction structure 52, thus providing a vibration-reducing effect on the transmission assembly 112, reducing noise transmitted to the bottom shell 13 when the transmission assembly 112 operates, and improving the user experience.
[0064] In some embodiments, as shown in FIGS. 7 and 8, the vibration reduction structure 50a includes a third vibration reduction structure 53, and the third vibration reduction structure 53 is arranged at a connection between the roller and the transmission assembly 112. In this embodiment, the third vibration reduction structure 53 is made of an elastic material and is elastically abutted against the bottom shell 13. The third vibration reduction structure 53 may be defined with an annular groove structure and may be fixed to the bottom shell 13, which can function in vibration reduction and can also clamp the bottom shell 13, which, together with the first vibration reduction structure 51 and the second vibration reduction structure 52, is jointly abutted against the bottom shell 13 to generate three bearing points to fix the driving mechanism 11 and reduce vibration transmission of the driver 111. Meanwhile, elastic contact of the third vibration reduction structure 53 with the bottom shell 13 can also function in sealing, so as to prevent splashing sewage from entering the driving mechanism 11 when the roller operates.
[0065] In some embodiments, the gear box includes a planetary gear module including an outer gear ring and a plurality of planetary gears meshed with the outer gear ring, and the planetary gears can be fitted to the outer gear ring in helical gears, so that noise generated by the gear box can be effectively reduced and user experience can be improved due to a high transmission speed ratio, high transmission efficiency, and low operation noise of the planetary gear module.
[0066] In some usage scenarios, when the cleaning apparatus 100 operates, the suction device 20 and the cleaning device 10 operates at the same time, the air blower 24 generates an airflow to achieve upward suction power, and the cleaning device 10 may drive the roller to operate, so as to mop the floor and facilitate garbage and sewage entering the inlet 31 of the sewage tank. At this time, the user may perceive vibration noise of the air blower 24, noise caused by operation of the cleaning device 10, and noise caused by incoming and outgoing air. In order to improve user experience, at least two of the cleaning device 10, the suction device 20, the air inlet channel 25, and the air outlet channel 26 may be provided with the noise reduction structure 50. In order to improve the noise reduction effect, noise caused by the vibration of the air blower 24, noise caused by operation of the cleaning device 10, and noise caused by the incoming and outgoing air can be treated simultaneously to realize the overall noise reduction of the cleaning apparatus 100.
[0067] Currently, cleaning apparatus such as vacuum cleaners, robotic floor cleaners, floor scrubbers, and handheld vacuums rely on air blowers as a power source to generate suction airflow, which is then utilized to clean dust, liquid, mites, and other debris from surfaces like floors and beds.
[0068] However, during operation, air blowers produce noise due to mechanical vibrations, impacting the user experience. In the market today, the common approach to reducing vibration of the air blower generally involves utilizing an elastomer in a compressed state for both vibration isolation and sealing. This method requires the elastomer to perform dual functions of compression and damping, which limits its effectiveness in damping. Typically, to ensure sealing performance, elastomers have to withstand significant pressure, causing their deformation capacity to be partially consumed in the process. As a result, when elastomers are used for buffering and damping, they have limited remaining deformation allowance; and for the same elastomer, tighter sealing leads to poorer damping and buffering performance because the deformation amount remains constant. In summary, the use of compression-sealing vibration damping results in inadequate damping performance. To enhance damping performance through this method, it is usually necessary to increase the thickness of the elastomer to guarantee sufficient buffer distance, which would occupy more space during usage. Consequently, this makes the compression-sealing vibration damping approach difficult to apply effectively in devices that require miniaturization and portability, such as cleaning apparatuses like floor scrubbers and cleaning robots, while maintaining good sealing and damping properties.
[0069] Therefore, this application presents embodiments of an elastic member designed for use in a suction device. The elastic member is stretched to achieve effective vibration reducing. Furthermore, through the incorporation of reinforcing structure, the elastic member maintains stable contact with the air blower and / or housing after being stretched, preventing deformation due to stretching and thereby ensuring sealing performance.
[0070] In some embodiments, as shown in FIG. 1, FIG. 3, and FIG. 9, the suction device 20 includes a housing 23 connected to the body 60 and an air blower 24. The housing 23 includes an installation cavity A, and the air blower 24 is arranged in the installation cavity A. The noise reduction structure 50 at the suction device 20 includes at least one of a vibration noise reduction structure 50b, a first sound insulation and noise reduction structure 50c, and a first sound absorption and noise reduction structure 50d (as shown in FIG. 28) . In this embodiment, the air blower 24 may generate noise due to contact with the housing 23 caused by mechanical vibration during an operation process. The vibration noise reduction structure 50b may reduce vibration noise by weakening the vibration of the air blower 24 so as to avoid direct impact with the housing 23. The first sound insulation and noise reduction structure 50c can wrap outside the air blower 24 to isolate the vibration noise of the air blower 24 inside the housing 23. The first sound absorption and noise reduction structure 50d may be a sound absorption structure of micropores or micro-slits, so that the acoustic energy consumes energy by friction and collision in the pores or slits to achieve sound absorbing effect, so as to absorb the vibration noise generated by the air blower 24 and achieve noise reduction. Illustratively, the suction device 20 can be provided with any one or two of the vibration noise reduction structure 50b, the first sound insulation and noise reduction structure 50c, and the first sound absorption and noise reduction structure 50d to improve the noise reduction effect of the whole machine, or the suction device 20 can be provided with all of them to improve the noise reduction effect of the whole machine.
[0071] In some embodiments, as shown in FIGS. 1 and 9, the vibration noise reduction structure 50b includes an elastic member 54 connected to the housing 23 and the air blower 24. In at least one of vibration directions of the air blower 24, there is a clearance space B between the air blower 24 and the housing 23 for the air blower 24 to vibrate. In this embodiment, with the elastic member 54 being connected with the air blower 24 and the housing 23, the air blower 24 can be provided with elastic cushioning during vibration because of elasticity of the elastic member 54. In at least one of vibration directions of the air blower 24, there is the clearance space B between the air blower 24 and the housing 23 for the air blower 24 to vibrate, so that contact between the air blower 24 and the housing 23 can be reduced, and vibration of the air blower 24 is isolated from an inner wall of the housing 23, thus weakening the vibration noise and realizing vibration and noise reduction of the air blower 24.
[0072] In some usage scenarios, vibration directions of the air blower 24 are up-down directions, and the clearance space B may be provided only above the air blower 24 or only below the air blower 24 so as to save space and make the structure compact. The clearance space B can also be arranged both above and below the air blower 24 to obtain a good vibration reduction effect.
[0073] Illustratively, connection between the elastic member 54 and the housing 23, and connection between the elastic member 54 and the air blower 24 can be sealed connection, such as by gluing or other fixing methods to realize sealed connection.
[0074] Alternatively, the connection between the elastic member 54 and the housing 23, and the connection between the elastic member 54 and the air blower 24 can also be contact connection. Without an external force, there may be a gap between the elastic member 54 and the housing 23, and a gap between the elastic member 54 and the air blower 24, and sealing can be realized only when the elastic member 54 and the housing 23 are pressed and the elastic member 54 and the air blower 24 are pressed.
[0075] Alternatively, the elastic member 54 may have a connected relationship, but not in connection in a sealed state, with the housing 23 and the air blower 24. For example, the elastic member 54 may be an elastic strip having two ends with one being connected to the air blower 24 and the other being connected to the housing 23, thereby providing elastic cushioning and functioning in vibration reduction.
[0076] In some embodiments, as shown in FIGS. 9 to 11, the air blower 24 is suspended in the installation cavity A only by way of the elastic member 54. In this embodiment, the air blower 24 may be suspended in the installation cavity A by one or more elastic members 54, that is, an avoidance space B is defined between upper end of the air blower 24 and the housing 23, and also defined between lower end of the air blower 24 and the housing 23, so as to achieve better vibration reduction effect.
[0077] In some embodiments, the elastic member 54 is in a stretched state at least when the air blower 24 vibrates. That is, the elastic member 54 can be in an unstretched state when the air blower 24 does not vibrate. As shown in FIG. 11, in this scheme, two elastic members 54 are adopted, namely a first elastic member 54a and a second elastic member 54b. The first elastic member 54a is located at the upper end of the air blower 24. If the air blower 24 does not vibrate, the first elastic member 54a may be in an initial state, that is, unstretched; and only when the air blower 24 starts to vibrate, the first elastic member 54a may prevent an intense vibration of the air blower 24 by way of its elastic force, and in this case the first elastic member 54a may be stretched. That is, in this embodiment, the elastic member 54 can be stretched only when the air blower 24 vibrates, that is, the elastic member 54 is driven to be stretched when the air blower 24 vibrates in a certain direction, and vibration of the air blower 24 in this direction can be cushioned due to elastic restoring force of the elastic member 54. In this embodiment, the air blower 24 can also be suspended in the installation cavity A by the elastic member 54 as shown in FIG. 1, such that not only does the elastic member 54 stretch when the air blower 24 vibrates, but it can also be pre-stretched under action of gravity of the air blower 24 when the air blower 24 is not vibrating. In this embodiment, stretching of the elastic member 54 can be fully utilized to cushion the vibration of the air blower 24 and realize elastic vibration reduction, so as to isolate the vibration of the air blower 24 from the inner wall of the housing 23, weaken the vibration noise, and realize vibration reduction and noise reduction of the air blower 24.
[0078] In some embodiments, as shown in FIG. 10, there is a gap C between the housing 23 and the air blower 24 in a direction perpendicular to the vibration direction. In this embodiment, because shaking or vibration in a left-right direction may occur when the air blower 24 vibrates, the gap C may be arranged between a side wall of the air blower 24 and a side wall of the housing 23 to reduce contact between the air blower 24 and the side wall of the housing 23 when the air blower shakes left and right, thereby reducing noise.
[0079] In some embodiments, as shown in FIG. 10, the vibration noise reduction structure 50b includes at least two elastic members 54, and the at least two elastic members 54 are spaced apart in the vibration direction. In this embodiment, stability of the air blower 24 can be improved by arrangement of at least two elastic members 54. For example, in case the whole suction device 20 is inclined, if only one elastic member 54 is connected to the air blower 24 (as shown in FIG. 9) , the air blower 24 may be inclined inside the housing 23 under action of gravity, which may easily cause the air blower 24 to collide with the housing 23. Therefore, a plurality of elastic members 54 can not only support or hold the air blower 24 to a certain extent, keep the air blower 24 not to be inclined, but also can improve cushioning and vibration reduction effect. Therefore, at least two elastic members 54 are arranged in the vibration direction of the air blower 24, which can prevent the air blower 24 from shaking left and right and inclining to cause abnormal sound, thereby making the air blower 24 more stable while improving vibration reduction performance.
[0080] In some embodiments, as shown in FIGS. 11 and 12, the vibration noise reduction structure 50b includes two elastic members 54, namely the first elastic member 54a and the second elastic member 54b. The first elastic member 54a includes a first connecting part 541, a second connecting part 542, and a first stretching part 543 connected with the first connecting part 541 and the second connecting part 542. The second elastic member 54b includes a third connecting part 544, a fourth connecting part 545, and a second stretching part 546 connected with the third connecting part 544 and the fourth connecting part 545. The housing 23 includes a first limiting part 231 and a second limiting part 232. The air blower 24 includes a first end 241 and a second end 242 opposite to the first end 241. The first end 241 includes a first supporting surface 2411, and the second end 242 includes a second supporting surface 2421. When the air blower 24 is installed in the installation cavity A, the first connecting part 541 is abutted against the first limiting part 231, the second connecting part 542 is abutted against the first supporting surface 2411, the third connecting part 544 is abutted against the second limiting part 232, and the fourth connecting part 545 is abutted against the second supporting surface 2421. The first stretching part 543 and the second stretching part 546 are in a stretched state at least when the air blower 24 vibrates. In this embodiment, the first end 241 of the air blower 24 may be the upper end of the air blower 24, and the second end 242 of the air blower 24 may be the lower end of the air blower 24. In case there is a clearance space B between the upper end of the air blower 24 and the housing 23, the air blower 24 may have an upward force on the first stretching part 543 when it vibrates upwards to stretch the first stretching part 543. Since the stretched first stretching part 543 has an elastic restoring force, this elastic restoring force works against further upward vibration of the air blower 24, so that elastic vibration reduction is achieved. In case there is a clearance space B between the lower end of the air blower 24 and the housing 23, the air blower 24 may have a downward force on the second stretching part 546 when it vibrates downwards to stretch the second stretching part 546. Since the stretched second stretching part 546 has an elastic restoring force, this elastic restoring force works against further downward vibration of the air blower 24, so that elastic vibration reduction is achieved. Both the first stretching part 543 and the second stretching part 546 can be in a stretched state when the air blower 24 vibrates, thus improving the vibration reduction effect. In this embodiment, stretching of the elastic member 54 is fully utilized to cushion the vibration of the air blower 24, so as to achieve elastic vibration reduction and weaken vibration noise.
[0081] As shown in FIGS. 11 and 12, in the initial state (without an external force, ignoring gravity of the air blower 24) , a distance between a surface of the first elastic member 54a contacted with the first limiting part 231 and a surface of the second elastic member 54b contacted with the second limiting part 232 is labeled as a first distance a (as shown in FIG. 12) , and a distance between the first limiting part 231 and the second limiting part 232 is labeled as a second distance b. The first distance a is greater than or equal to the second distance b. In this embodiment, if the first distance a is set equal to the second distance b, the first stretching part 543 and the second stretching part 546 can be stretched due to limiting of the first limiting part 231 and the second limiting part 232 on the first stretching part 543 and the second stretching part 546 when the air blower 24 is installed and vibrates, so as to achieve elastic vibration reduction. And if the first distance a is set to be greater than the second distance b, when the air blower 24 is installed, the first stretching part 543 and the second stretching part 546 can be stretched even when the air blower 24 does not vibrate due to limiting of the first limiting part 231 and the second limiting part 232 on the first stretching part 543 and the second stretching part 546, that is, the air blower 24 can be stably disposed in the installation cavity A.
[0082] In related art, in order to achieve vibration reduction, an elastic member 54 is usually provided along the vibration direction of the air blower 24, the elastic member 54 is pressed by the air blower 24 and the housing 23, so as to cushion vibration by way of compressing and deforming of the elastic member 54, and further reduce noise. Because compression of the elastic member 54 is limited, especially a commonly used silicone seal, vibration reduction and noise reduction of the air blower 24 may also be limited, which affects the vibration reduction effect. However, regarding the suction device 20 in the embodiments of the present disclosure, vibration is reduced by stretching the elastic member 54, so that elasticity in a stretching direction of the first stretching part 543 and the second stretching part 546 can be fully utilized for vibration reduction, thus cushioning the vibration, isolating the vibration of the air blower 24 from the inner wall of the housing 23, and weakening the vibration noise.
[0083] In some embodiments, as shown in FIGS. 11 to 12, and 21, the second connecting part 542 and / or the fourth connecting part 545 are hollow, which can improve heat dissipation effect of the air blower 24.
[0084] In some embodiments, as shown in FIGS. 11 to 12, and 22, the second connecting part 542 is provided with a reinforcing structure 547, which can strengthen rigidity of the second connecting part 542 and prevent deformation of the second connecting part 542 caused by the first elastic member 54a when it is in the stretched state. This reinforcement effectively sets the shape of the second connecting part 542, which may ensure that the second connecting part 542 keeps stable contact with the air blower 24 after the first elastic member 54a is stretched. In some embodiments, as shown in FIG. 11, the air blower 24 has a first supporting surface 2411 that abuts against the second connecting part 542. When the first elastic member 54a is connected to air blower 24, the reinforcing structure 547 serves to maintain the second connecting part 542 without deformation, thus ensuring a sealed contact between the second connecting part 542 and the first supporting surface 2411. In this embodiment, by stretching the first stretching part 543, the second connecting part 542 is pressed into sealing engagement with the first supporting surface 2411, thereby realizing a sealed connection between the first elastic member 54a and air blower 24.
[0085] In some embodiments, as shown in FIG. 22, the second connecting part 542 has a first surface 5421 that abuts against the air blower 24 and a second surface 5422 opposite to the first surface 5421. The reinforcing structure 547 is parallel to both the first surface 5421 and the second surface 5422, with an equal distance maintained between the reinforcing structure 547 and each of the first surface 5421 and the second surface 5422. In this embodiment, the reinforcing structure 547 is placed in a central position within the second connecting part 542, running parallel to these surfaces, so as to facilitate maintaining the shape of the second connecting part 542 under load, thereby preventing deformation that could compromise the sealing effectiveness.
[0086] In some embodiments, the second connecting part 542 is provided with at least one positioning hole 5423. The positioning hole 5423 serves to accurately position the reinforcing structure 547 during the process of co-molding it integrally with the second connecting part 542. In this embodiment, when manufacturing the first elastic member 54a, the reinforcing structure 547 needs to be positioned at a predetermined location within the mold, ensuring that after processing, it will locate in the middle of the second connecting part 542. During this process, the reinforcing structure 547 can be supported by positioning structures such as fixed screws, which hold the reinforcing structure 547 in place until the molding is completed. After the molding is done and the screws are removed, the holes left behind by the screws form the positioning holes 5423, which facilitate the accurate placement of the reinforcing structure 547 throughout the manufacturing process. Similarly, if a reinforcing structure 547 is also set in the first connecting part 541, it is also needed to be properly positioned during manufacturing. Therefore, the first connecting part 541 would also require at least one positioning hole 5423 for this purpose. The number of positioning holes 5423 can be either one or multiple, depending on the size of the reinforcing structure 547, with the ultimate aim being to ensure the stable and accurate positioning of the reinforcing structure 547.
[0087] In some embodiments, the second connecting part 542 can also surround an edge of the upper end of the air blower 24. The second connecting part 542 forms a hollow shape at the upper end of the air blower 24 so as to facilitate heat dissipation of the air blower 24, and the hollow shape may be circular, square, polygonal, or determined according to a shape of the air blower 24. The first connecting part 541, the first stretching part 543, and the second connecting part 542 are integrally formed to form the first elastic member 54a having a cross section with a convex shape at its top, so as to be installed at the upper end of the air blower 24 to cushion vibration by way of the elastic force of the elastic member 54 and prevent the upper end of the air blower 24 from colliding with the housing 23, thereby reducing noise. Similarly, the fourth connecting part 545 can also be provided with a same reinforcing structure 547, and the fourth connecting part 545 can also surround at an edge of the lower end of the air blower 24.
[0088] In some embodiments, as shown in FIGS. 11 to 12, and 22, the first connecting part 541 and / or the third connecting part 544 are hollow so as to be sleeved outside the air blower 24.
[0089] In some embodiments, the first connecting part 541 may also be provided with a reinforcing structure 547 (as shown in FIG. 22) , which can strengthen rigidity of the first connecting part 541 and prevent deformation of the first connecting part 541 caused by the first elastic member 54a when it is in the stretched state. This reinforcement effectively sets the shape of the first connecting part 541, which may ensure that the first connecting part 541 keeps stable contact with the housing 23 after the first elastic member 54a is stretched. In some embodiments, as shown in FIG. 11, the housing 23 has a first limiting part 231 that abuts against the first connecting part 541. When the first elastic member 54a is connected to the housing 23, the reinforcing structure 547 serves to keep a sealed contact between the first connecting part 541 and the first limiting part 231. In this embodiment, by stretching the first stretching part 543, the first connecting part 541 is pressed into sealing engagement with the first limiting part 231, thereby realizing a sealed connection between the first elastic member 54a and housing 23. Similarly, the third connecting part 544 can also be provided with a same reinforcing structure 547.
[0090] In some embodiments, rigidity of the reinforcing structure 547 is greater than that of the elastic member 54. The reinforcing structure 547 can be provided to improve structural strength of the first connecting part 541 and / or the second connecting part 542 and / or the third connecting part 544 and / or the fourth connecting part 545, so as to facilitate shaping of the first connecting part 541 and / or the second connecting part 542 and / or the third connecting part 544 and / or the fourth connecting part 545 and prevent the first connecting part 541 and / or the second connecting part 542 and / or the third connecting part 544 and / or the fourth connecting part 545 from deforming when the elastic member 54 is in a stressed and stretched state.
[0091] In some embodiments, the reinforcing structure 547 is made of metal. In this embodiment, the reinforcing structure 547 may be a metal sheet, so as to support the first connecting part 541 and / or the second connecting part 542 and / or the third connecting part 544 and / or the fourth connecting part 545, and avoid deformation of the first connecting part 541 and / or the second connecting part 542 and / or the third connecting part 544 and / or the fourth connecting part 545 when stressed. Of course, the reinforcing structure 547 can also be made of other materials, such as hard plastic or any material with high hardness and less deformation.
[0092] In some embodiments, as shown in FIGS. 5 and 11, the air blower 24 has a first end 241 and a second end 242 opposite to the first end 241 along its axial direction. The first elastic member 54a has an initial state and a stretched state, where the initial state of the first elastic member 54a refers to the condition without any external force acting upon it, and the stretched state is when the first elastic member 54a is stretched under the action of a first force and a second force. The housing 23 includes a first limiting position 233 and a bottom wall 236, and, in the stretched state, the first elastic member 54a is sealingly connected to the first limiting position 233 through the first limiting part 231. In this embodiment, by pressing the first elastic member 54a downward using the first limiting part 231 to the first limiting position 233, the first elastic member 54a is prestretched after being compressed. Consequently, the first elastic member 54a applies a downward force on the air blower 24, which serves to buffer the vibrations of the air blower 24, thereby effectively reducing the vibrations for improved performance.
[0093] As an implementation, the elastic member 54 is an elastic strip, and there are two or more elastic strips in a circumferential direction of the air blower 24. In this embodiment, more than two elastic strips may be arranged at intervals in the circumferential direction of the air blower 24, so that the air blower 24 is balanced in force. In this case, due to a gap defined between adjacent elastic strips in the circumferential direction, the elastic member 54 has no sealing function.
[0094] In some embodiments, as shown in FIGS. 3 and FIGS. 13 to 17, the air inlet 21 includes a first air inlet 211 provided on the housing 23 and a second air inlet 212 provided on the air blower 24, and the air outlet 22 includes a first air outlet 221 provided on the housing 23 and a second air outlet 222 provided on the air blower 24. The first air inlet 211 is communicated with the second air inlet 212, and at least part of the air inlet channel 25 is formed between the first air inlet 211 and the second air inlet 212; the first air outlet 221 is communicated with the second air outlet 222, and at least part of the air outlet channel 26 is formed between the first air outlet 221 and the second air outlet 222. The elastic member 54 is arranged between the air inlet channel 25 and the air outlet channel 26 to isolate the air inlet channel 25 from the air outlet channel 26. In this embodiment, the air inlet channel 25 and the air outlet channel 26 of the air blower 24 can be isolated by the elastic member 54, so that a suction force of the air blower 24 can be concentrated at the first air inlet 211 of the housing 23. Consequently, a negative pressure suction is applied to the recovery device 30 connected with the first air inlet 211 of the housing 23 (as shown in FIG. 1) , so as to prevent air leakage and achieve sealing. In this case, the elastic member 54 can not only reduce the vibration of the air blower 24, but also achieve the sealing effect.
[0095] Illustratively, in order to achieve the sealing effect of the elastic member 54, the elastic member 54 may be made of rubber, silica gel, and other materials, such as silica gel sheets.
[0096] As another implementation of the elastic member 54, the elastic member 54 is an elastic sheet. The elastic member 54 is adopted in a sheet-like structure, which can function in isolation, thereby realizing sealing.
[0097] In some embodiments, as shown in FIGS. 14 and 15, the vibration and noise reduction structure 50b further includes an airflow directing elastic member 55. The airflow directing elastic member 55 is connected to the housing 23 and the air blower 24, and at least a part of the air outlet channel 26 is formed between the airflow directing elastic member 55 and the elastic member 54, that is, the air outlet channel 26 is isolated from other parts inside the housing 23 by the airflow directing elastic member 55 and the elastic member 54, so as to guide an airflow blown out of the second air outlet 222 to be concentrated towards the first air outlet 221 through the air outlet channel 26 and blown out from the first air outlet 221. In this embodiment, the first air outlet 221 and the second air outlet 222 may be arranged at a side of the air blower 24. The provided drainage elastic member 55 may cooperate with the elastic member 54 to guide the airflow to flow in a direction as shown in FIG. 1, so as to avoid the air blown out of the first air outlet 221 flowing to other areas in the installation cavity A, such as the avoiding space B, to avoid causing unstable factors.
[0098] In some usage scenarios, a circuit board of the suction device 20 is commonly installed inside the housing 23, for example, at an upper part of the installation cavity A, namely, near the clearance space B. In order to avoid excessive air volume of the air blower 24 and thus damage to the circuit board by water vapor entrained by the airflow and resulting in unstable circuit connection, the air outlet channel 26 is isolated from the clearance space B with provision of the airflow directing elastic member 55, so as to prevent the airflow entrained with water vapor from blowing to the circuit board.
[0099] In some embodiments, as shown in FIG. 15, the housing 23 includes a first wall 234 and a second wall 235, the first wall 234 and the second wall 235 are spaced apart and arranged outside an outer side wall of the air blower 24, and the second wall 235 is located between the outer side wall of the air blower 24 and the first wall 234. The airflow directing elastic member 55 is connected between the outer side wall of the air blower 24 and the first wall 234, and the elastic member 54 is connected between the outer side wall of the air blower 24 and the second wall 235. In this embodiment, with provision of the first wall 234 and the second wall 235, there may be double-layer sound insulation effect, which may better isolate noise of the air blower 24 and improve the noise reduction effect. Since the first wall 234 and the second wall 235 can form at least part of the air outlet channel 26, a direction change in which the first wall 234 and the second wall 235 are arranged can change a direction of the air outlet channel 26.
[0100] In some embodiments, as shown in FIG. 15, the first air outlet 221 is located at the bottom of the housing 23. In this embodiment, with this arrangement, the suction device 20 may blow downward, which prevents the suction device 20 from blowing to users when it is applied to the cleaning apparatus 100, and improves the user experience.
[0101] In some embodiments, as shown in FIG. 16, the elastic member 54 includes a first connecting part 541, a second connecting part 542, and a first stretching part 543 connected with the first connecting part 541 and the second connecting part 542. The housing 23 includes a first limiting part 231. The air blower 24 includes a first end 241 and a second end 242 opposite to the first end 241. The second end 242 includes a second supporting surface 2421. When the air blower 24 is installed in the installation cavity A, the first stretching part 543 is in a stretched state, the first connecting part 541 is abutted against the first limiting part 231, and the second connecting part 542 is abutted against the second supporting surface 2421. In this embodiment, the elastic member 54 is abutted and in contact with the first limiting part 231 and the first supporting surface 2411, thus can act on the first limiting part 231 and the first supporting surface 2411 when the first stretching part 543 is in a stretched state, so that the abutting may be more tight to achieve the sealing effect. In this case, the elastic member 54 can not only reduce vibration, but also function in sealing.
[0102] In some embodiments, as shown in FIG. 16, the airflow directing elastic member 55 includes a fifth connecting part 551, a sixth connecting part 552, and a third stretching part 553 connected with the fifth connecting part 551 and the sixth connecting part 552. The housing 23 includes a third limiting part 238, and the air blower 24 includes a first end 241 and a second end 242 opposite to the first end 241. The first end 241 includes a first supporting surface 2411. When the air blower 24 is installed in the installation cavity A, the third stretching part 553 is in a stretched state, the fifth connecting part 551 is abutted against the third limiting part 238, and the sixth connecting part 552 is abutted against the first supporting surface 2411. In this embodiment, the airflow directing elastic member 55 is abutted and in contact with the third limiting part 238 and the first supporting surface 2411, thus can act on the third limiting part 238 and the second supporting surface 2421 when the third stretching part 553 is in a stretched state, so that the abutting can be more tight to achieve the sealing effect. In such a way, the airflow directing elastic member 55 can not only reduce vibration, but also function in sealing.
[0103] In some embodiments, as shown in FIG. 16, the sixth connecting part 552 of the airflow directing elastic member 55 may be abutted against the first supporting surface 2411 at the upper end of the air blower 24, and the second connecting part 542 of the elastic member 54 may be abutted against the second supporting surface 2421 at the lower end of the air blower 24. In such a way, the first limiting part 231 is arranged on the second wall 235, that is, the first connecting part 541 of the elastic member 54 may be connected to the first limiting part 231 located on the second wall 235; and the third limiting part 238 is arranged on the first wall 234, that is, the fifth connecting part 551 of the airflow directing elastic member 55 may be connected to the third limiting part 238 located on the first wall 234.
[0104] In some embodiments, as shown in combination with FIG. 11, FIG. 12, and FIG. 16, in the initial state (without the external force, ignoring the gravity of the air blower 24) , a distance between the surface of the airflow directing elastic member 55 contacted with the third limiting part 238 and the surface of the elastic member 54 contacted with the first limiting part 231 is labeled as a first distance a (as shown in FIG. 12) , and a distance between the third limiting part 238 and the first limiting part 231 is labeled as a second distance b. The first distance a is greater than or equal to the second distance b. In this embodiment, the first distance a is set to be greater than the second distance b. When the air blower 24 is installed, the third stretching part 553 and the first stretching part 543 are stretched even when the air blower 24 does not vibrate due to limiting of the third limiting part 238 and the first limiting part 231 on the third stretching part 553 and the first stretching part 543. In such a way, sealing of the air inlet channel 25 and the air outlet channel 26 may be ensured, and proper guidance of airflow of the air outlet channel 26 may be ensured.
[0105] In some embodiments, as shown in FIG. 16 and FIG. 21, a structure of the airflow directing elastic member 55 may be the same as that of the elastic member 54. The sixth connecting part 552 is hollow, which can improve heat dissipation effect of the air blower 24.
[0106] In some embodiments, the sixth connecting part 552 may also be provided with the reinforcing structure 547 (as shown in FIG. 22) , which can strengthen rigidity of the sixth connecting part 552 and prevent deformation of the sixth connecting part 552 caused by the airflow directing elastic member 55 when it is in the stretched state. This reinforcement effectively sets the shape of the sixth connecting part 552, which ensures that the sixth connecting part 552 can keep stable contact with the air blower 24 after the first elastic member 54a is stretched.
[0107] In some embodiments, the sixth connecting part 552 can also surround an edge of the upper end of the air blower 24 to form a hollow shape at the upper end of the air blower 24, so as to facilitate heat dissipation of the air blower 24. The hollow shape may be circular, square, polygonal, or determined according to a shape of the air blower 24. The fifth connecting part 551, the third stretching part 553, and the sixth connecting part 552 are integrally formed, forming an airflow directing elastic member 55 having a cross section with a convex shape at its top, to facilitate the installing of the airflow directing elastic member 55 at the upper end of the air blower 24 for vibration reduction.
[0108] In some embodiments, as shown in FIG. 16, the fifth connecting part 551 is hollow so as to be sleeved outside the air blower 24.
[0109] In some embodiments, the fifth connecting part 551 may also be provided with the reinforcing structure 547 (as shown in FIG. 22) , which can strengthen rigidity of the fifth connecting part 551 and prevent deformation of the fifth connecting part 551 caused by the airflow directing elastic member 55 when it is in the stretched state. This reinforcement effectively sets the shape of the fifth connecting part 551, which ensures that the fifth connecting part 551 can keep stable contact with the housing 23 after the first elastic member 54a is stretched.
[0110] In some embodiments, as shown in FIGS. 14 to 16, the second air outlet 222 is located at a side of the air blower 24. In this embodiment, the second air outlet 222 can also be arranged at a side of the air blower 24 to prevent the airflow from blowing to the circuit board at the upper end of the air blower 24, so as to prevent the circuit board from being damaged by the moisture entrained by the airflow and thus an unstable circuit.
[0111] In some embodiments, as shown in FIG. 17, FIG. 3, and FIG. 20, in the vibration direction of the air blower 24, the air blower 24 includes a first end 241 and a second end 242 opposite to the first end 241, the elastic member 54 is provided between the first end 241 of the air blower 24 and the housing 23, and there is a avoidance space B between the first end 241 of the air blower 24 and the housing 23. The air inlet 21 includes a first air inlet 211 provided on the housing 23 and a second air inlet 212 provided on the air blower 24. The air outlet 22 includes a first air outlet 221 provided on the housing 23 and a second air outlet 222 provided on the air blower 24, the first air inlet 211 is communicated with the second air inlet 212, and at least part of the air inlet channel 25 is formed between the first air inlet 211 and the second air inlet 212. The first air outlet 221 is communicated with the second air outlet 222, and at least part of the air outlet channel 26 is formed between the first air outlet 221 and the second air outlet 222. The vibration noise reduction structure 50b further includes a compression elastic member 56. The compression elastic member 56 is arranged between the air inlet channel 25 and the air outlet channel 26 to isolate the air inlet channel 25 from the air outlet channel 26. In this embodiment, the elastic member 54 may be provided to reduce the vibration of the air blower 24, and with provision of the compression elastic member 56, sealing effect can be realized, so that the air inlet channel 25 and the air outlet channel 26 can be isolated, such that a suction force of the air blower 24 can be concentrated at the first air inlet 211 of the housing 23. Consequently, a negative pressure suction is applied to the recovery device 30 connected with the first air inlet 211 of the housing 23 (as shown in FIG. 1) , so as to prevent air leakage and achieve sealing. Compared with the above scheme that both ends of the air blower 24 are provided with the clearance spaces B, a certain structural space can be saved and an installation structure can be simplified in this scheme, which can make the whole suction device 20 more compact.
[0112] In some embodiments, as shown in FIG. 17, the elastic member 54 includes a first connecting part 541, a second connecting part 542, and a first stretching part 543 connected with the first connecting part 541 and the second connecting part 542. The housing 23 includes the first limiting part 231, and the first end 241 of the air blower 24 includes the first supporting surface 2411. When the air blower 24 is installed in the installation cavity A, the first stretching part 543 is in a stretched state, the first connecting part 541 is abutted against the first limiting part 231, and the second connecting part 542 is abutted against the first supporting surface 2411. In this embodiment, the elastic member 54 functions in sealing by the first connecting part 541 being abutted against the first limiting part 231 and the second connecting part 542 being abutted against the first supporting surface 2411. In this way, the elastic member 54 not only functions in vibration reduction and sealing, but also can function in guidance of airflow, for example, the elastic member 54 blocks between the air outlet channel 26 and the clearance space B, guiding the airflow blown out of the second air outlet 222 to be output from the air outlet channel 26, so as to prevent the airflow from blowing to the clearance space B or other areas.
[0113] In some embodiments, the first air inlet 211 is located at a bottom wall 236 of the housing 23, and the second air inlet 212 is located at the second end 242 of the air blower 24. At least part of the compression elastic member 56 (abottom 5822 of the compression elastic member 56) is abutted between the second end 242 of the air blower 24 and the bottom wall 236 of the housing 23 to isolate the air inlet channel 25 from the air outlet channel 26, and the compression elastic member 56 has a openwork structure to allow the first air inlet 211 to be communicated with the second air inlet 212. The bottom wall 236 of the housing 23 may be directly abutted against the compression elastic member 56, and there is no need of the clearance space B, thereby saving space and reducing a volume of the housing 23.
[0114] In some embodiments, the first connecting part 541 is abutted against the first limiting part 231 and the second connecting part 542 is abutted against the first supporting surface 2411 to realize sealing under stretching action of the first stretching part 543. Further, due to stretching action of the elastic member 54, vibration of the air blower 24 can be cushioned by the first stretching part 543. In this case, a sealing and compressing part (that is, an abutting part) of the elastic member 54 is separated from the stretching part. The compressing part can be fully compressed to achieve sealing, and rigidity of the stretching part can be provided to be lower, so that stretching of the elastic member 54 can be fully utilized to cushion the vibration of the air blower 24 and realize elastic vibration reduction, so as to isolate the vibration of the air blower 24 from the inner wall of the housing 23, avoid the air blower 24 directly colliding with the housing 23 to reduce vibration and noise, and realize vibration reduction and noise reduction of the air blower 24.
[0115] If the elastic member 54 is configured to reduce vibration through compression, the whole elastic member 54 needs to function in compression and vibration reduction at the same time. Because the sealing requires a large compression force, cushioning capacity of the elastic member 54 may be reduced during a pressure bearing process, which results in degradation of vibration reduction effect and affects the vibration reduction performance. Therefore, in the embodiments of the present disclosure, the elastic member 54 is stretched to maintain the sealing effect while the elastic vibration reduction of the elastic member 54 can be fully utilized to realize effective vibration reduction.
[0116] In some embodiments, as shown in FIG. 17, the housing 23 includes a first wall 234 and a second wall 235, the first wall 234 and the second wall 235 are spaced apart and arranged outside the outer side wall of the air blower 24, the second wall 235 is located between the outer side wall of the air blower 24 and the first wall 234, and the elastic member 54 is connected between the outer side wall of the air blower 24 and the first wall 234. At least part of the compression elastic member 56 (aside of the compression elastic member 56) is abutted between the outer side wall of the air blower 24 and the second wall 235, and at least part of the air outlet channel 26 is formed between the first wall 234 and the second wall 235. In this embodiment, with provision of the first wall 234 and the second wall 235, there may be double-layer sound insulation effect, which may better isolate noise of the air blower 24 and improve the noise reduction effect. Since the first wall 234 and the second wall 235 can form at least part of the air outlet channel 26, a direction change in which the first wall 234 and the second wall 235 are arranged can change a direction of the air outlet channel 26.
[0117] In some embodiments, as shown in FIGS. 19 and 20, in the initial state (without the external force) , a distance between a surface of the elastic member 54 contacted with the first limiting part 231 and a lower edge of the compression elastic member 56 is labeled as a third distance c, and a distance between the first limiting part 231 and the bottom wall 236 is labeled as a fourth distance d. The third distance c is greater than or equal to the fourth distance d. In this embodiment, the third distance c is set to be greater than or equal to the fourth distance d, when the air blower 24 is installed and vibrates, the first stretching part 543 can be stretched due to limiting of the first limiting part 231 on the first stretching part 543, so as to realize elastic vibration reduction. When the air blower 24 vibrates, the compression elastic member 56 can be pressed due to limiting of the bottom wall 236 in combination with the second end 242 of the air blower 24, thus achieving sealing effect.
[0118] In some usage scenarios, as shown in FIG. 5, the air blower 24 is installed in the housing 23 and protrudes beyond the first limiting position 233. Since initially, the third distance c is greater than the fourth distance d, it is necessary to stretch the first elastic member 54a downward so that it can be stretched onto the first limiting position 233 and secured through the first limiting part 231. Alternatively, the first elastic member 54a can be fixed at the first limiting position 233 by the first limiting part 231 first, followed by installing the air blower 24 from below upwards, causing the top of the air blower 24 to push the first elastic member 54a upward, thereby stretching the first elastic member 54a upward. After installation is complete, the first limiting part 231 applies a downward first force on the first elastic member 54a, while the air blower 24 applies an upward second force on the first elastic member 54a, which pre-stretches the first elastic member 54a. This enhances the elastic vibration reduction capability of the first elastic member 54a.
[0119] In some embodiments, as shown in FIGS. 18 and 19, the housing 23 has an opening end 237 opposite to the bottom wall 236, the first end 241 of the air blower 24 protrudes from the opening end 237, and an edge of the opening end 237 forms the first limiting part 231. In this embodiment, the first stretching part 543 is fixed to the edge of the opening end 237, which facilitates positioning and operation.
[0120] In some embodiments, the second connecting part 542 is connected to the first end 241 of the air blower 24, where a gap exists between the second connecting part 542 and the housing 23. In this embodiment, the first end 241 refers to the upper end of the air blower 24, and the second connecting part 542 can be configured to cover the upper end of the air blower 24 while maintaining a gap with the housing 23, allowing for up-down vibration of the air blower 24. This arrangement prevents contact between the air blower 24 and the housing during vibration, thereby avoiding secondary noise caused by collisions.
[0121] It should be noted that the second connecting part 542 is not limited to being disposed covering the upper end of the air blower 24. For instance, in some alternative embodiments, the second connecting part 542 circumferentially surrounds and connects to the sidewall of the air blower 24, with the first end 241 of the air blower 24 passing through the first elastic member 54a and maintaining a gap between itself and the housing 23. In this embodiment, the second connecting part 542 is connected to the sidewall of the air blower 24, such that the upper end of the air blower 24 protrudes beyond the second connecting part 542 and still maintains a gap with the housing 23. This configuration allows for up-down vibration of the air blower 24, preventing collisions and subsequent generation of secondary noise.
[0122] In some embodiments, as shown in FIGS. 3 and 5, the housing 23 includes a first sub-housing 23a and a second sub-housing 23b wrapped around the first sub-housing 23a. The air blower 24 is accommodated within the first sub-housing 23a and features an air inlet 21 and an air outlet 22. An air outlet channel 26 communicating with the air outlet 22 is formed between the first sub-housing 23a and the second sub-housing 23b. A second elastic member 54b or a conventional compressible sealing buffer member is sleeved onto the end of the air blower 24 where the air inlet 21 is located, serving to block air from entering the gap between the air blower 24 and the first sub-housing 23a, thereby directing airflow into the air blower 24 through the air inlet 21 and out through the air outlet 22 into the air outlet channel 26. In this embodiment, the presence of the second elastic member 54b or the conventional compressible sealing buffer member effectively prevents air leakage from the gap between the lower end of the air blower 24 and the first sub-housing 23a, providing both sealing and vibration reduction functions. Consequently, it ensures that the airflow follows the direction depicted in FIG. 3, specifically entering the air blower 24 via the air inlet 21 and then exiting through the air outlet 22 into the air outlet channel 26, thereby establishing a complete intake and exhaust airflow pathway.
[0123] In some embodiments, a Shore hardness of the elastic member 54 is 30 degrees to 60 degrees. In this embodiment, the Shore hardness of the elastic member 54 is in a range of 30 degrees to 60 degrees, with better shock absorption and production reliability. For example, the Shore hardness of the elastic member 54 may be 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 55 degrees, or 60 degrees. Optionally, the Shore hardness of the elastic member 54 is 45 degrees, with better shock absorption and production reliability.
[0124] In some embodiments, the housing 23 includes at least two sub-housings, and a thickness of each of the sub-housings is greater than 1 mm to meet sound insulation requirements, with better sound insulation effect. At least two sub-housings are arranged around the air blower 24 and nested inwardly from the outer layer to form a first sound insulation and noise reduction structure 50c. A gap between two adjacent sub-housings has a distance of 1 mm to 10 mm. In this embodiment, an installation cavity A is formed by an innermost sub-housing, and the innermost sub-housing can include a first wall 234 and a second wall 235. With provision of multi-layer sub-housings, multi-layer sound insulation can be achieved, with better sound insulation effect. The gap between two adjacent sub- housings also defines an air layer. A thickness of the air layer may be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, or 10 mm, which can be actually designed according to required sound insulation frequency.
[0125] In some embodiments, as shown in FIGS. 3, 18, and 19, the opening end 237, the first limiting position 233, and the bottom wall 236 are provided on the first sub-housing 23a. The upper end of the air blower 24 extends outward from the opening end 237 of the first sub-housing 23a. After installation of the air blower 24 within the first sub-housing 23a, the air outlet 22 is positioned on the sidewall of the air blower 24 that protrudes from the opening end 237, located beneath the first elastic member 54a. By virtue of the configuration of the first elastic member 54a, it serves to guide the airflow discharged from the air outlet 22 toward the air outlet channel 26, thereby providing a sealing and vibration reduction effect. This ensures that the airflow can flow in the direction shown in FIG. 3, i.e., entering the air blower 24 through the air inlet 21 and subsequently exiting through the air outlet 22 into the air outlet channel 26, thereby establishing a complete intake and exhaust airflow pathway.
[0126] As shown in FIGS. 3, 5, 11-12, 16-17, and 21-22, embodiments of the present disclosure provide an elastic member 54 applied in a suction device 20. The elastic member 54 includes:
[0127] a first connecting part 541 / 544, connected with a housing 23;
[0128] a second connecting part 542 / 545, connected with an air blower 24;
[0129] a stretching part 543 / 546, the first connecting part 541 / 544 and the second connecting part 542 / 545 being connected through the stretching part 543 / 546; and
[0130] a reinforcing structure 547, at least one of the first connecting part 541 / 544 and the second connecting part 542 / 545 being provided with the reinforcing structure 547;
[0131] where the stretching part 543 / 546 is in a stretched state when the air blower 24 is installed to the housing 23 through the elastic member 54.
[0132] As shown in FIGS. 3, 5, 11-12, and 16-17, embodiments of the present disclosure provide a suction device 20, which includes a housing 23, an air blower 24, and either two or just one of the aforementioned elastic member 54. The air blower 24 is disposed within the housing 23 and is configured for generating suction airflow. In the case where there are two elastic members 54, these two elastic members are respectively designated as the first elastic member 54a and the second elastic member 54b. The first elastic member 54a and the second elastic member 54b are respectively positioned at the two ends of the air blower 24 along its axial direction and are sealingly connected between the air blower 24 and the housing 23. In the situation where there is only one elastic member 54 as described above, this elastic member 54 is arranged at one end of the air blower 24 along its axial direction and is sealingly connected between the air blower 24 and the housing 23.
[0133] As shown in FIGS. 1, 2 and 4, embodiments of this disclosure provide a cleaning apparatus 100, which includes:
[0134] a body 60;
[0135] a cleaning part 12, installed on the body 60 and configured to clean an object to be cleaned;
[0136] the above-mentioned suction device 20, installed on the body 60 and configured to generate suction airflow to recover dirt from a surface of the object to be cleaned.
[0137] The elastic member 54 provided by the present disclosure is capable of elastically contacting with the air blower 24 and the housing 23 to achieve vibration reduction and sealing. When the air blower 24 is installed in the housing 23 through the elastic member 54, effective vibration reduction is realized, thereby isolating the vibrations of the air blower 24 from the inner wall of the housing 23 and attenuating the vibration noise, thus achieving vibration reduction and noise reduction for the air blower 24. In addition, the provision of the reinforcing part 547 enhances the structural strength of the first connecting part 541 / 544 and / or the second connecting part 542 / 545, serving to shape these parts and preventing deformation of the first connecting part 541 / 544 and / or the second connecting part 542 / 545 during stretching of the elastic member 54. This ensures that the elastic member 54 maintains stable contact with the air blower 24 and / or the housing 23, thereby guaranteeing the sealing performance.
[0138] Illustratively, as shown in FIG. 3, the housing 23 includes three sub-housings, namely, a first sub-housing 23a, a second sub-housing 23b wrapped on the first sub-housing 23a, and a third sub-housing 23c wrapped on the second sub-housing 23b. With this three-layers sound insulation design, noise of the air blower 24 can be effectively isolated inside the housing 23.
[0139] In some embodiments, as shown in FIGS. 2, 3, 5, and 15, the noise reduction structure 50 at the air inlet channel 25 includes a second sound insulation and noise reduction structure 50e. The second sound insulation and noise reduction structure 50e includes at least one layer of sound insulation wall 57, and the sound insulation wall 57 is arranged around the outlet 32 and the air inlet 21. In case the second sound insulation and noise reduction structure 50e includes one layer of sound insulation wall 57, the one layer of sound insulation wall 57 forms the air inlet channel 25; and in case the second sound insulation and noise reduction structure 50e includes more than one layer of sound insulation wall 57, an innermost sound insulation wall 57 forms the air inlet channel 25. In this embodiment, the air inlet 21 refers to the first air inlet 211 of the housing 23, and the at least one layer of sound insulation wall 57 surrounds a space between the outlet 32 and the air inlet 21, so as to guide the airflow into the air inlet 21 from the outlet 32 through the air inlet channel 25, and prevent noise generated by incoming air at the air inlet 21 from being transmitted to the outside, thus effectively isolating noise generated when the suction device 20 intakes air. There is a long flow path of the airflow defined from the outlet 32 to the air outlet 22 through the air inlet 21 and interior of the suction device 20, which can effectively isolate noise, and prevent the noise from being directly transmitted to the outside. As shown in FIGS. 1, 3, and 5, the outlet 32 of the recovery device 30 and the air inlet 21 of the suction device 20 are located inside the second sound insulation and noise reduction structure 50e, and the air outlet channel 26 is located outside the second sound insulation and noise reduction structure 50e, thereby isolating the air inlet channel 25 from the air outlet channel 26. It can be seen that the second sound insulation and noise reduction structure 50e can also isolate the noise reduction structures 50 at the air inlet channel 25 and the air outlet channel 26.
[0140] In some embodiments, as shown in FIGS. 1, 23, and 24, the noise reduction structure 50 at the air outlet channel 26 includes a second sound absorption and noise reduction structure 50f. The second sound absorption and noise reduction structure 50f includes a sound absorption structure 58 arranged at the air outlet channel 26, in particular, the sound absorption structure 58 may be arranged in the air outlet channel 26 or on a side wall of the air outlet channel 26. The sound absorption structure 58 is configured to absorb noise generated by outgoing air at the air outlet 22 or generated in the air outlet channel 26. The air outlet channel 26 may be a channel defined by a gap between the recovery device 30 and the body 60, a channel defined inside the body 60 to exhaust air of the suction device 20, or a channel defined by a side wall of the recovery device 30 to exhaust air of the suction device 20. In this embodiment, the sound absorption structure 58 is arranged at the air outlet channel 26, and the sound absorption structure 58 may be a micropore or micro-slit type sound absorption structure, so that sound energy can be rubbed and collided in pores or slits to be consumed, thereby absorbing noise generated by outgoing air at the air outlet 22 or generated in the air outlet channel 26, realizing effective noise control and improving the user experience.
[0141] In some embodiments, as shown in FIGS. 1 and 23, the recovery device 30 has a third end and a fourth end which are opposite to each other, with the outlet 32 at the third end and the inlet 31 at the fourth end. The sound absorption structure 58 is formed at the third end of the recovery device 30, and the second sound insulation and noise reduction structure 50e is located between the sound absorption structure 58 and the outlet 32, for isolating the outlet 32 and the air inlet 21 from the air outlet channel 26, so as to prevent the airflow at the outlet 32 from entering the air outlet channel 26. In an upright state, the third end is the upper end of the recovery device 30, and the fourth end is the lower end of the recovery device 30. The second sound insulation and noise reduction structure 50e can also be provided to block between the sound absorption structure 58 and the outlet 32, that is, the air inlet channel 25 and the air outlet channel 26 are isolated, thus the air flow from the air inlet 21 is prevented from directly entering the air outlet channel 26.
[0142] In some embodiments, as shown in FIGS. 23 and 25, the second sound insulation and noise reduction structure 50e includes an annular elastic seal 57a. The higher material density, the better the sound insulation effect can be. Considering cost, the elastic seal 57a can be a sealing rubber ring, and specifically, can be made of rubber, silica gel, or other materials, which not only has good sound insulation effect, but also has low cost, and can effectively prevent the noise generated by incoming air at the air inlet 21 from being transmitted to the outside.
[0143] In some embodiments, as shown in FIG. 25, a width c of the elastic seal 57a between an inner edge 571 and an outer edge 572 is 2 mm to 4 mm. In this embodiment, when the density is given, the higher the thickness, the better the sound insulation effect. The width of the elastic seal 57a is designed to be 2 mm to 4 mm, which can ensure noise isolation.
[0144] In some embodiments, the sound absorption structure 58 is installed on the body 60 and / or the recovery device 30, and is arranged on the side wall of the air outlet channel 26. As described above, the sound absorption structure 58 is located at the air outlet channel 26, thus the arrangement of the sound absorption structure 58 to the air outlet channel 26 is in relevance to a formation of the air outlet channel 26. For example, the sound absorption structure 58 may be installed on the body 60, arranged on the recovery device 30, or even be arranged on both the body 60 and the recovery device 30. In this embodiment, the sound absorption structure 58 is arranged on the side wall of the air outlet channel 26 instead of inside the air outlet channel 26, so that the air outlet channel 26 cannot be occupied, which reduces wind resistance and improves the noise reduction effect.
[0145] As shown in FIGS. 1 and 5, the air outlet channel 26 includes a first gap 261 defined between the outer side wall of the recovery device 30 and the body 60. The recovery device 30 has the third end and the fourth end which are opposite to each other. The outlet 32 of the recovery device 30 is arranged at the third end, and the inlet 31 is arranged at the fourth end. The third end of the recovery device 30 can be divided into an outlet area where the outlet 32 is arranged and a remaining non-outlet area. The outlet 32 of the recovery device 30 is communicated with the air inlet 21 of the suction device 20. A second gap 262 is formed between the non-outlet area and a bottom 5822 of the suction device 20. The first gap 261 is communicated with the second gap 262 to form the air outlet channel 26. The sound absorption structure 58 may be arranged at the second gap 262 and installed at the third end of the recovery device 30, or be arranged at the first gap 261 and installed at a side wall of the recovery device 30 or a side wall of the body 60.
[0146] In some embodiments, any one, two or all of the recovery device 30, the body 60, and the air outlet channel 26 may be provided with one or more sound absorption structures 58.
[0147] In some embodiments, as shown in FIG. 1, 5 and FIGS. 23 to 28, the sound absorption structure 58 includes a sound absorption plate 581 and a groove 582, and the groove 582 may be defined on the recovery device 30 (as shown in FIGS. 1, 23, and 24) or on the body 60 (not shown) . The sound absorption plate 581 covers the groove 582, and the groove 582 and the sound absorption plate 581 enclose to form a sound absorption cavity 583. A plurality of sound absorption holes 5811 are defined on the sound absorption plate 581 (as shown in FIG. 27 and 28) , and the sound absorption cavity 583 is communicated with the air outlet channel 26 through the sound absorption holes 5811. In this embodiment, the groove 582 is defined with an opening 5821 at one of its surface (as shown in FIG. 28) , where the groove 582 may utilize a groove space of the recovery device 30 (as shown in FIG. 5, FIG. 23, FIG. 25, and FIG. 26) or the body 60, with the sound absorption plate 581 covering the opening 5821 of the groove 582 to form the sound absorption cavity 583, thus forming the sound absorption structure 58, which not only can achieve effective noise elimination and reduce noise, but also make rational use of space to avoid increasing space and thus product volume.
[0148] In some embodiments, the plurality of sound absorption holes 5811 in the sound absorption plate 581 may be micropores and / or micro-slits. That is to say, the sound absorption plate 581 may be a plate with microplates or micro-slits, or a plate with both micropores and micro-slits. The sound absorption plate 581 and the groove 582 are cooperated to form a microporous sound absorber, a micro-slit sound absorber, or a mixed sound absorber, with which noise elimination effect can be achieved.
[0149] In some other embodiments, the sound absorption structure 58, i.e., the sound absorption cavity 583, may be filled with a sound absorption material, such as a porous sound absorption material, to improve noise elimination effect.
[0150] It can be understood that the sound absorption structure 58 can be a combination of at least two of a micro-perforated sound absorber, a micro-slit sound absorber, and a porous sound absorption material, so as to improve the noise elimination effect.
[0151] In some embodiments, as shown in FIGS. 26 and 28, the groove 582 is defined with an opening 5821 and a bottom 5822 facing the opening 5821, and the sound absorption plate 581 covers the opening 5821. A distance between the sound absorption plate 581 and the bottom 5822 may be 5 mm to 20 mm. In this embodiment, a distance between the sound absorption plate 581 and the bottom 5822 of the groove 582 is designed to be greater than 5 mm, generally within a range of 5 mm to 20 mm, which, while realizing effective sound absorption, does not occupy too much space of the recovery device 30 and avoid affecting capacity of the recovery device 30 or occupying too much volume of the body 60. Of course, in some other embodiments, if allowed, the distance between the sound absorption plate 581 and the bottom 5822 of the groove 582 can be designed to be larger.
[0152] In some embodiments, as shown in FIG. 28, the bottom 5822 of the groove 582 includes bottom surfaces, and distances between respective bottom surfaces and the sound absorption plate 581 are different. In this embodiment, in order to effectively improve a sound absorption frequency bandwidth, the sound absorption cavity 583 can be provided as a space with various heights, that is, distances between respective bottom surfaces and the sound absorption plate 581 are different, which can be adapted to an irregular space in the recovery device 30. For example, the groove 582 is provided with three, four, or five bottom surfaces. Different heights can serve to eliminate noise of different frequencies, and thus provision of such a space with different heights can improve the sound absorption frequency bandwidth.
[0153] In some embodiments, as shown in FIG. 28, the bottom 5822 of the groove 582 includes a first bottom surface 58221 and a second bottom surface 58222, a distance between the first bottom surface 58221 and the sound absorption plate 581 is labeled as a fifth distance e, a distance between the second bottom surface 58222 and the sound absorption plate 581 is labeled as a sixth distance f, and the fifth distance e is greater than the sixth distance f. In this embodiment, in order to effectively improve the sound absorption frequency bandwidth, the fifth distance e and the sixth distance f are designed to be different. This design can also be adapted to an irregular space on the left and right sides of the recovery device 30, and can improve the sound absorption frequency bandwidth.
[0154] In some embodiments, as shown in FIG. 27 and FIG. 28, the sound absorption plate 581 is provided with a plurality of sound absorption holes 5811, and the sound absorption cavity 583 is communicated with the air outlet channel 26 through the sound absorption holes 5811. The sound absorption holes 5811 are round holes, with an aperture of each of the sound absorption holes less than 1 mm. In this embodiment, provision of the circular hole facilitates processing, and the aperture of the sound absorption hole 5811 is set to be less than 1 mm, which can ensure good high-frequency sound absorption performance.
[0155] In some embodiments, as shown in FIGS. 27 and 28, the sound absorption plate 581 is provided with a plurality of sound absorption holes 5811, the sound absorption cavity 583 is communicated with the air outlet channel 26 through the sound absorption holes 5811, and an open-hole ratio of the sound absorption holes 5811 in the sound absorption plate 581 is 1%to 10%. In this embodiment, the open-hole ratio is a ratio at which the area of the sound absorption hole 5811 accounts for the area of the sound absorption plate 581. The open-hole ratio of the sound absorption hole 5811 is limited to 1%to 10%, which can realize effective noise control. For example, the open-hole ratio of the sound absorption hole 5811 may be 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, etc., as long as it can meet noise elimination requirements.
[0156] In some embodiments, a thickness of the sound absorption plate 581 is 0.1 mm to 2 mm.
[0157] Design of the sound absorber is mainly determined by the thickness of sound absorption plate 581, a depth of sound absorption cavity 583, the aperture and the open-hole ratio of the sound absorption hole 5811. With the above design, effective noise control can be realized.
[0158] In some embodiments, the sound absorption plate 581 faces the air outlet 22. In this embodiment, the sound absorption plate 581 is arranged to be oriented toward the air outlet 22, which can facilitate absorption of noise.
[0159] Of course, in some other embodiments, in order to facilitate the installation of the recovery device 30 in cooperation with the groove space of the recovery device 30, the sound absorption plate 581 and the air outlet 22 can also be arranged to be staggered, as long as they are communicated.
[0160] In some embodiments, the sound absorption plate 581 is detachably connected at the groove 582. In this embodiment, the sound absorption plate 581 is designed to be detachable, which can facilitate users to take down the sound absorption plate 581 to clean an internal space of the sound absorber. For example, the sound absorption plate 581 may be detachably connected at the groove 582 of the recovery device 30 by magnetic attraction, snaps, screws, or the like.
[0161] In some embodiments, as shown in FIG. 1 and FIGS. 23 to 25, the recovery device 30 has a third end and a fourth end which are opposite to each other. The outlet 32 is arranged at the third end, and the inlet 31 is arranged at the fourth end. The third end includes the outlet area where the outlet 32 is arranged and the remaining non-outlet area, and the outlet 32 is in sealed communication with the air inlet 21, so that the suction device 20 can draw a vacuum within the recovery device 30. The sound absorption structure 58 is formed in the non-outlet area. In an upright state, the third end is the upper end of the recovery device 30, and the fourth end is the lower end of the recovery device 30. Generally, a size of the suction device 20, that is, the air inlet 21 of the air blower 24, may be provided smaller, while a cross-sectional area of the recovery device 30 may be provided larger in order to ensure the storage capacity of the recovery device 30. In such a case, in order to facilitate setting of the sealing structure to seal the outlet 32 of the recovery device 30 and the air inlet 21 of the suction device 20, the outlet 32 of the recovery device 30 may be generally provided with a smaller cross-sectional area than that of an end face of the third end of the recovery device 30, thus creating the remaining non-outlet area at the third end (upper end) of the recovery device 30. A remaining space at the upper end of the recovery device 30 can be effectively utilized by arranging the sound absorption structure 58 in the non-outlet 32 area, thus reducing noise while ensuring an effective volume of the recovery device 30.
[0162] In some embodiments, as shown in FIGS. 1, 5, and 23 to 25, there are two sound absorption structures 58 formed at the third end of the recovery device 30, with one of the two sound absorption structures 58 being located at a left side of the outlet 32 and the other being located at a right side of the outlet 32. In this embodiment, when the recovery device 30 is installed on the body 60, a part of the side wall of the recovery device 30 faces the body 60 and encloses with the body 60 to form a first gap 261. A top (third end) of the recovery device 30 is opposite to the bottom 5822 of the suction device 20. In such a case, the outlet 32 is docked with the air inlet 21 of the suction device 20, and a second gap 262 is defined between the non-outlet area of the third end of the recovery device 30 and the bottom 5822 of the suction device 20. The second gap 262 is separated from the air inlet 21 and is communicated with the first gap 261. By providing two sound absorption structures 58, not only sound absorbing efficiency can be improved, but also the non-outlet area at the upper end of the recovery device 30, that is, a remaining space at the left and right sides of the outlet area, can be effectively utilized.
[0163] In some embodiments, as shown in FIG. 23 to FIG. 25, the recovery device 30 further includes a filter 40. The filter 40 is arranged at the outlet 32 and configured for filtering solid particles and water vapor from the airflow to prevent particles and water vapor from entering the suction device 20. In this embodiment, the filter 40 may be adopted as HEPA, and the second sound insulation and noise reduction structure 50e surrounds the filter 40 and blocks between the sound absorption structure 58 and the filter 40.
[0164] In some embodiments, the first sound absorption and noise reduction structure 50d at the suction device 20 may be the same as the second sound absorption and noise reduction structure 50f, that is, the first sound absorption and noise reduction structure 50d can also be adopted as a sound absorption structure 58. For example, as shown in FIGS. 27 and 28, the sound absorption structure 58 (the first sound absorption and noise reduction structure 50d) includes a sound absorption plate 581 and a groove 582 formed in the housing 23, and the sound absorption plate 581 covers an opening 5821 of the groove 582. The groove 582 and the sound absorption plate 581 enclose to form the sound absorption cavity 583. The plurality of sound absorption holes 5811 are formed in the sound absorption plate 581. In this embodiment, the sound absorption cavity 583 and thus the first sound absorption and noise reduction structure 50d can be formed by covering the opening 5821 of the groove 582 with the sound absorption plate 581, which not only can achieve effective noise elimination and reduce noise, but also make rational use of space to avoid increasing space and thus product volume.
[0165] The plurality of sound absorption holes 5811 in the sound absorption plate 581 of the first sound absorption and noise reduction structure 50d may be micropores and / or micro-slits. That is to say, the sound absorption plate 581 may be a plate with microplates or micro-slits, or a plate with both micropores and micro-slits. The sound absorption plate 581 and the groove 582 are cooperated to form a microporous sound absorber, a micro-slit sound absorber, or a mixed sound absorber, with which noise elimination effect can be achieved.
[0166] In some other embodiments, the sound absorption cavity 583 of the first sound absorption and noise reduction structure 50d can also be filled with a sound absorption material, such as a porous sound absorption material, to improve the noise elimination effect.
[0167] It can be understood that the first sound absorption and noise reduction structure 50d can be adopted as a combination of at least two of a micro-perforated sound absorber, a micro-slit sound absorber, and a porous sound absorption material, so as to improve the noise elimination effect.
[0168] Different embodiments or examples and features of the different embodiments or examples described in this specification can be combined by those skilled in the art without contradicting each other.
[0169] The above is only specific implementations of this disclosure, but a protection scope of this disclosure is not limited to this. Various equivalent modifications or substitutions can easily occur to any technical personnel familiar with the art within a technical scope of the present disclosure, and these modifications or substitutions should be encompassed in the protection scope of this disclosure. Therefore, the protection scope of this disclosure shall be subject to the protection scope of claims.
Claims
1.A suction device, comprising:a housing, forming an installation cavity inside;an air blower, arranged in the installation cavity and configured for generate a suction airflow; andan elastic member, connected to the housing and the air blower;wherein there is a clearance space between the air blower and the housing in at least one of vibration directions of the air blower.2.The suction device according to claim 1, wherein,the air blower is suspended in the installation cavity only by way of the elastic member; and / orthe elastic member is in a stretched state at least when the air blower vibrates; and / orthere is a gap between the housing and the air blower in a direction perpendicular to the at least one vibration direction; and / orthe elastic member is an elastic strip, and there are two or more elastic strips arranged circumferentially around the air blower.3.The suction device according to claim 1, wherein, the suction device comprises at least two elastic members, and the at least two elastic members are spaced apart in the vibration direction.4.The suction device according to claim 3, wherein, the housing comprises a first limiting part and a second limiting part; the air blower includes a first end and a second end opposite to the first end in the vibration direction of the air blower, the first end comprises a first supporting surface, and the second end comprises a second supporting surface;the suction device comprises:a first elastic member, comprising a first connecting part, a second connecting part, and a first stretching part connected with the first connecting part and the second connecting part; anda second elastic member, comprising a third connecting part, a fourth connecting part, and a second stretching part connected with the third connecting part and the fourth connecting part;when the air blower is installed in the installation cavity, the first connecting part is abutted against the first limiting part, the second connecting part is abutted against the first supporting surface, the third connecting part is abutted against the second limiting part, the fourth connecting part is abutted against the second supporting surface, and the first stretching part and the second stretching part are in a stretched state at least when the air blower vibrates.5.The suction device according to claim 4, wherein,the first connecting part and / or the third connecting part is hollow; and / orthe first connecting part and / or the third connecting part is provided with a reinforcing structure; and / orthe second connecting part and / or the fourth connecting part is hollow; and / orthe second connecting part and / or the fourth connecting part is provided with a reinforcing structure.6.The suction device according to any one of claims 1-5, wherein,the housing comprises a first air inlet and a first air outlet;the air blower comprises a second air inlet and a second air outlet;the first air inlet is communicated with the second air inlet, and at least part of an air inlet channel is formed between the first air inlet and the second air inlet;the first air outlet is communicated with the second air outlet, and at least part of an air outlet channel is formed between the first air outlet and the second air outlet; andthe elastic member is arranged between the air inlet channel and the air outlet channel to isolate the air inlet channel from the air outlet channel.7.The suction device according to claim 6, wherein, the elastic member is an elastic sheet.8.The suction device according to claim 6, further comprising an airflow directing elastic member connected to the housing and the air blower, at least part of the air outlet channel is formed between the airflow directing elastic member and the elastic member so as to guide an airflow blown out from the second air outlet to be concentrated and blown out to the first air outlet through the air outlet channel.9.The suction device according to claim 8, wherein the housing comprises a first wall and a second wall, the first wall and the second wall are spaced apart and arranged outside an outer side wall of the air blower, the second wall is located between the outer side wall of the air blower and the first wall, the airflow directing elastic member is connected between the outer side wall of the air blower and the first wall, the elastic member is connected between the outer side wall of the air blower and the second wall, and at least part of the air outlet channel is formed between the first wall and the second wall.10.The suction device according to any one of claims 6-9, wherein, the first air outlet is located at the bottom of the housing.11.The suction device according to any one of claims 8-10, wherein,the elastic member comprises a first connecting part, a second connecting part, and a first stretching part connected with the first connecting part and the second connecting part;the housing comprises a first limiting part; andthe air blower comprises a first end and a second end opposite to the first end, and the first end comprises a first supporting surface;when the air blower is installed in the installation cavity, the first stretching part is in a stretched state, the first connecting part is abutted against the first limiting part, and the second connecting part is abutted against the first supporting surface.12.The suction device according to any one of claims 8-11, wherein,the airflow directing elastic member comprises a fifth connecting part, a sixth connecting part, and a third stretching part connected with the fifth connecting part and the sixth connecting part;the housing comprises a third limiting part; andthe air blower comprises a first end and a second end opposite to the first end, and the second end comprises a second supporting surface;when the air blower is installed in the installation cavity, the third stretching part is in a stretched state, the fifth connecting part is abutted against the second limiting part, and the sixth connecting part is abutted against the second supporting surface.13.The suction device according to claim 12, wherein,the fifth connecting part and / or the sixth connecting part is hollow; and / orthe fifth connecting part and / or the sixth connecting part is provided with a reinforcing structure.14.The suction device according to any one of claims 6-13, wherein, the second air outlet is located at a side of the air blower.15.The suction device according to claim 1, wherein,the air blower comprises a first end and a second end opposite to the first end in the vibration direction of the air blower;the elastic member is arranged between the first end of the air blower and the housing, and the clearance space is defined between the first end and the housing;the housing comprises a first air inlet and a first air outlet;the air blower comprises a second air inlet and a second air outlet;the first air inlet is communicated with the second air inlet, and at least part of an air inlet channel is formed between the first air inlet and the second air inlet; andthe first air outlet is communicated with the second air outlet, and at least part of an air outlet channel is formed between the first air outlet and the second air outlet;wherein the suction device further comprises a compression elastic member arranged between the air inlet channel and the air outlet channel to isolate the air inlet channel from the air outlet channel.16.The suction device according to claim 15, wherein,the elastic member comprises a first connecting part, a second connecting part, and a first stretching part connected with the first connecting part and the second connecting part;the housing comprises a first limiting part; andthe first end of the air blower comprises a first supporting surface;when the air blower is installed in the installation cavity, the first stretching part is in a stretched state, the first connecting part is abutted against the first limiting part, and the second connecting part is abutted against the first supporting surface.17.The suction device according to claim 15 or 16, wherein, the first air inlet is arranged at a bottom wall of the housing, the second air inlet is arranged on the second end of the air blower, the compression elastic member is at least partially abutted between the second end of the air blower and the bottom wall of the housing to isolate the air inlet channel from the air outlet channel, and the compression elastic member has an openwork structure to communicate the first air inlet with the second air inlet.18.The suction device according to any one of claims 15-17, wherein the housing comprises a first wall and a second wall, the first wall and the second wall are spaced apart and arranged outside an outer side wall of the air blower, the second wall is located between the outer side wall of the air blower and the first wall, the elastic member is connected between the outer side wall of the air blower and the first wall, the compression elastic member is at least partially abutted between the outer side wall of the air blower and the second wall, and at least part of the air outlet channel is formed between the first wall and the second wall.19.A cleaning apparatus, comprising a body, a recovery device, and the suction device as claimed in any one of claims 1-18, wherein the recovery device and the suction device are installed on the body, and the recovery device is communicated with the suction device to recover dirt through suction airflow generated by the suction device.20.A cleaning apparatus, comprising a body and following components installed on the body:a cleaning device comprising a driving mechanism and a cleaning part connected with the driving mechanism, the driving mechanism being configured for driving the cleaning part to clean an object to be cleaned;the suction device as claimed in any one of claims 1-18, configured for generating a suction airflow to remove dirt from a surface of the object to be cleaned by suction, the suction device being provided with an air inlet and an air outlet; anda recovery device configured for recovering the dirt suctioned by the suction device, and provided with an inlet and an outlet, the dirt entering the recovery device from the inlet, the outlet being communicated with the air inlet to form an air inlet channel, an airflow entering the suction device from the air inlet channel and exiting from the air outlet into an air outlet channel;wherein noise reduction structures are provided at least two of the cleaning device, the suction device, the air inlet channel, and the air outlet channel to reduce noise generated at the at least two of the cleaning device, the suction device, the air inlet channel, and the air outlet channel.21.The cleaning apparatus according to claim 20, wherein the suction device comprises a housing connected to the body and an air blower, the housing comprises an installation cavity, and the air blower is arranged in the installation cavity; andthe suction device is provided with the noise reduction structure, and the noise reduction structure at the suction device comprises at least one of a vibration noise reduction structure, a first sound insulation and noise reduction structure, and a first sound absorption and noise reduction structure.22.The cleaning apparatus according to claim 21, wherein the vibration noise reduction structure comprisesan elastic member connected to the housing and the air blower; wherein there is aclearance space between the air blower and the housing in at least one of vibration directionsof the air blower to allow for vibration of the air blower.23.The cleaning apparatus according to claim 22, wherein the air blower is suspended in the installation cavity only by way of the elastic member; and / or,the elastic member is in a stretched state at least when the air blower vibrates; and / or,there is a gap between the housing and the air blower in a direction perpendicular to the at least one vibration direction; and / or,the elastic member is an elastic strip, and there are two or more elastic strips arranged circumferentially around the air blower.24.The cleaning apparatus according to claim 21, wherein the housing comprises at least two sub-housings, the at least two sub-housings are arranged around the air blower and nested inwardly from the outer layer to form the first sound insulation and noise reduction structure, there is a gap between two adjacent sub-housings, and the installation cavity is defined by the sub-housing located innermost.25.The cleaning apparatus according to claim 20, wherein the air inlet channel is provided with the noise reduction structure, the noise reduction structure at the air inlet channel comprises a second sound insulation and noise reduction structure comprising at least one layer of sound insulation wall, and the sound insulation wall is arranged around the outlet and the air inlet.26.The cleaning apparatus according to claim 25, wherein,in case the second sound insulation and noise reduction structure comprises one layer of sound insulation wall, the one layer of sound insulation wall forms the air inlet channel; andin case the second sound insulation and noise reduction structure comprises more than one layer of sound insulation wall, an innermost sound insulation wall forms the air inlet channel.27.The cleaning apparatus according to claim 25 or 26, wherein the second sound insulation and noise reduction structure comprises an annular elastic seal.28.The cleaning apparatus according to claim 27, wherein a width of the elastic seal between an inner edge and an outer edge is 2 mm to 4 mm.29.The cleaning apparatus according to claim 20, wherein the air outlet channel is provided with the noise reduction structure, the noise reduction structure at the air outlet channel comprises a second sound absorption and noise reduction structure, and the second sound absorption and noise reduction structure comprises a sound absorption structure provided at the air outlet channel.30.The cleaning apparatus according to claim 29, wherein the sound absorption structure is installed on the body and / or the recovery device, and is arranged at a side wall of the air outlet channel.31.The cleaning apparatus according to claim 29 or 30, wherein the sound absorption structure comprises a sound absorption plate and a groove formed on the recovery device or the body, the sound absorption plate is provided with a plurality of sound absorption holes, the sound absorption plate covers the groove and encloses with the groove to form a sound absorption cavity, and the sound absorption cavity is communicated with the air outlet channel through the sound absorption holes.32.The cleaning apparatus according to claim 31, wherein the plurality of sound absorption holes are micropores and / or micro-slits; and / orthe sound absorption structure is filled with a sound absorption material.33.The cleaning apparatus according to claim 31, wherein the groove has an opening and a bottom facing the opening, and the sound absorption plate covers the opening.34.The cleaning apparatus according to any one of claims 31-33, wherein a distance between the sound absorption plate and the bottom is 5 mm to 20 mm.35.The cleaning apparatus according to claim 33 or 34, wherein the groove comprises bottom surfaces at the bottom, and distances between respective bottom surfaces and the sound absorption plate are different.36.The cleaning apparatus according to claim 35, wherein the groove comprises a first bottom surface and a second bottom surface at the bottom, a distance between the first bottom surface and the sound absorption plate is a first distance, a distance between the second bottom surface and the sound absorption plate is a second distance, and the first distance is greater than the second distance.37.The cleaning apparatus according to any one of claims 31-36, wherein the sound absorption plate is provided with a plurality of sound absorption holes, and aperture of any one of the sound absorption holes is less than 1 mm; and / orthe sound absorption plate is provided with a plurality of sound absorption holes, and an open-hole ratio of the sound absorption holes on the sound absorption plate is 1%to 10%; and / ora thickness of the sound absorption plate is 0.1 mm to 2 mm; and / orthe sound absorption plate faces the air outlet; and / orthe sound absorption plate is detachably connected to the groove.38.The cleaning apparatus according to any one of claims 29-37, wherein the recovery device comprises a third end and a fourth end opposite to the third end, the outlet is arranged at the third end, the inlet is arranged at the fourth end, the third end comprises an outlet area where the outlet is arranged and a remaining non-outlet area, and the outlet is in sealed communication with the air inlet; wherein the sound absorption structure is formed in the non-outlet area.39.The cleaning apparatus according to claim 38, wherein there is at least one sound absorption structure; and / orthere are two sound absorption structures, and the two sound absorption structures are formed at the third end with one being located at one side of the outlet and the other being located at the other side of the outlet; and / orthe outlet is provided with a filter.40.The cleaning apparatus according to claim 20, wherein the cleaning device is provided with the noise reduction structure, and the noise reduction structure at the cleaning device comprises a vibration reduction structure;the cleaning device further comprises a bottom shell, the driving mechanism and the cleaning part are installed on the bottom shell, the driving mechanism comprises a driver and a transmission assembly connected to the driver, the transmission assembly is connected to the cleaning part, and the driver is configured for driving the transmission assembly to drive the cleaning part to rotate;wherein the vibration reduction structure comprises:a first vibration reduction structure arranged at a connection between the driver and the bottom shell; and / or,a second vibration reduction structure arranged at a connection between the transmission assembly and the bottom shell; and / or,a third vibration reduction structure arranged at a connection between the cleaning part and the transmission assembly.