Power device of cleaning equipment and cleaning equipment

Abstract

The invention provides a power device of cleaning equipment and the cleaning equipment, and the power device of the cleaning equipment comprises a first shell which is provided with an inner cavity with an open top and an outer cavity with an open top, the inner cavity is provided with an air inlet, and the outer cavity is provided with an exhaust channel; the second shell comprises a barrel-shaped part and an interlayer part fixed in the barrel-shaped part, one end of the barrel-shaped part is in butt joint fit with the opening in the top of the inner cavity, the interlayer part is provided with a plurality of pressure equalizing holes distributed annularly, and the space in the barrel-shaped part is divided into a first pressure equalizing cavity and a second pressure equalizing cavity by the interlayer part; the third shell covers the second shell and is in butt joint fit with the opening in the top of the outer cavity, and an interlayer cavity is formed between the third shell and the outer side face of the cylindrical part; one part of the fan assembly is located in the inner cavity, and the other part of the fan assembly is located in the second pressure equalizing cavity; the air inlet is communicated with the exhaust channel through the inner cavity, the second pressure equalizing cavity, the first pressure equalizing cavity, the interlayer cavity and the outer cavity in sequence.

Description

Technical Field

[0001] The invention relates to the technical field of household cleaning appliances, and in particular to a power device and a cleaning device. Background Art

[0002] With the improvement of living standards, users' demand for convenient household cleaning equipment is gradually increasing. For example, in order to reduce the cleaning burden of floor cleaning work and improve cleaning efficiency and effect, cleaning equipment such as vacuum cleaners and floor scrubbers are gradually becoming popular in households.

[0003] At present, household cleaning equipment such as vacuum cleaners and floor scrubbers on the market usually use high-speed motors as power sources to generate high negative pressure to clean the dust particles on the floor surface. When users use these devices, they generate a lot of noise due to factors such as motor vibration and airflow disturbance, which affects the user experience. Summary of the invention

[0004] The present invention provides a power device of a cleaning device and a cleaning device, which are used to solve the defect of high noise in the operation of the cleaning device in the prior art and reduce the operation noise of the cleaning device.

[0005] The present invention provides a power device of a cleaning equipment, comprising: a first shell, having an inner chamber and an outer chamber with an open top, the inner chamber is provided with an air inlet, and the outer chamber is provided with an exhaust passage; a second shell, comprising a cylindrical portion and a partition portion fixed in the cylindrical portion, one end of the cylindrical portion is docked with the opening at the top of the inner chamber, the partition portion is provided with a plurality of pressure-equalizing holes distributed in a ring shape, and the partition portion divides the space in the cylindrical portion into a first pressure-equalizing chamber and a second pressure-equalizing chamber; a third shell, which is covered above the second shell and docked with the opening at the top of the outer chamber, and a sandwich chamber is formed between the third shell and the outer side surface of the cylindrical portion; a fan assembly, a part of which is located in the inner chamber, and the rest of which is located in the second pressure-equalizing chamber; the air inlet is connected to the exhaust passage through the inner chamber, the second pressure-equalizing chamber, the first pressure-equalizing chamber, the sandwich chamber and the outer chamber in sequence.

[0006] According to a power device of a cleaning equipment provided by the present invention, a cylindrical silencer is provided in the first pressure equalizing chamber, and the silencer is coaxially arranged with the cylindrical portion; a silencer chamber is formed inside the silencer, and a plurality of silencer holes connecting the inside and outside of the silencer chamber are evenly distributed on the outer peripheral wall of the silencer.

[0007] Specifically, this embodiment provides an implementation method for improving the noise reduction effect by arranging a muffler. When the airflow passes through the outer peripheral wall of the muffler, the muffler hole plays a filtering role on the noise within a certain frequency range.

[0008] According to a power device of a cleaning equipment provided by the present invention, a support member is arranged between the third shell and the second shell; the support member includes a tubular portion supported between the partition portion and the top of the third shell, the muffler has a center hole matching the tubular portion, and the muffler is sleeved on the tubular portion; the partition portion has an opening opposite to the tubular portion, so that the power circuit of the fan assembly can extend through the tubular portion to the outside of the third shell.

[0009] Specifically, this embodiment provides an implementation method of disposing a support member between the second shell and the third shell. The support member can not only provide support but also set a power supply line of the fan assembly through the tubular portion.

[0010] According to a power device of a cleaning device provided by the present invention, sound-absorbing cotton is arranged at the intersection of the outer chamber and the exhaust passage.

[0011] Specifically, this embodiment provides an implementation method of reducing noise by using sound-absorbing cotton. The sound-absorbing cotton is placed at the intersection of the outer chamber and the exhaust passage to absorb the noise conducted in the air passing through the sound-absorbing cotton.

[0012] According to a power device of a cleaning device provided by the present invention, a side of the sound-absorbing cotton facing the outer chamber is an arc-shaped surface, and the arc-shaped surface and the outer chamber are combined to form an annular air duct structure.

[0013] Specifically, this embodiment provides an implementation method of a specific shape of the sound-absorbing cotton. The arc surface and the outer cavity are combined to form an annular air duct structure, thereby reducing the impact of the sound-absorbing cotton on air circulation.

[0014] According to a power device of a cleaning equipment provided by the present invention, the fan assembly includes a fan body and a funnel-shaped wind guide cover, and the bottom of the wind guide cover is formed with an air duct entrance opposite to the air inlet; a first vibration-damping pad is arranged between the fan body and the partition part, and a second vibration-damping pad is arranged between the wind guide cover and the inner chamber.

[0015] Specifically, this embodiment provides an implementation method in which a fan body and an air guide cover of a fan assembly are respectively provided with a first vibration damping pad and a second vibration damping pad. The first vibration damping pad and the second vibration damping pad reduce the external vibration transmission of the fan assembly during operation.

[0016] According to a power device of a cleaning equipment provided by the present invention, at least one annular groove is formed on the outer peripheral surface of the first vibration damping pad and / or the second vibration damping pad to form multiple vibration damping layers on the outer periphery of the first vibration damping pad and / or the second vibration damping pad.

[0017] Specifically, this embodiment provides an implementation in which the first vibration damping pad and / or the second vibration damping pad is formed with an annular groove. The multiple vibration damping layers of the first vibration damping pad and / or the second vibration damping pad can absorb vibration by elastic deformation by compressing the space of the annular groove.

[0018] According to a power device of a cleaning equipment provided by the present invention, the second vibration damping pad has a skirt portion matching the shape of the air guide cover, and the skirt portion completely isolates the outer surface of the air guide cover from the inner surface of the inner chamber; and / or the air inlet of the inner chamber forms a convex structure facing the fan assembly, and the second vibration damping pad forms a concave structure matching the air inlet on the side close to the air inlet.

[0019] Specifically, this embodiment provides an implementation method in which the second vibration damping pad has a skirt portion, and the second vibration damping pad forms a concave structure that matches the air inlet. The skirt portion isolates the air duct and the inner chamber, so that the vibration transmission in all directions of the air duct and the inner chamber can be reduced based on the elastic deformation of the skirt portion; the cooperation of the convex structure and the concave structure is conducive to the relative position limitation of the air duct and the inner chamber.

[0020] According to the present invention, a power device of a cleaning equipment includes a battery pack formed by multiple cylindrical batteries; the outer peripheral surface of the third shell is formed with an arc groove for limiting the installation position of the cylindrical batteries; the air flowing in the interlayer chamber can exchange heat with the cylindrical batteries in the arc groove through the heat conduction effect of the third shell.

[0021] Specifically, this embodiment provides an implementation method that can utilize the air flow inside the third shell to dissipate heat from the battery pack. When the fan assembly is running, the cylindrical battery generates heat while supplying power, and the heat is transferred to the third shell, where it exchanges heat with the air flowing inside the third shell, thereby preventing the battery pack from overheating.

[0022] The present invention also provides a cleaning device, comprising a power device of the cleaning device described in any one of the above embodiments.

[0023] The power device and cleaning device of the cleaning equipment provided by the present invention, the power device of the cleaning equipment forms the outer structure of the fan assembly through the first shell, the second shell and the third shell, while protecting the fan assembly, forming an air passage composed of an inner chamber, a second pressure equalizing chamber, a first pressure equalizing chamber, an interlayer chamber and an outer chamber. The interlayer portion separates the space in the cylindrical portion into a first pressure equalizing chamber and a second pressure equalizing chamber. During the air flow process, the air can only enter the first pressure equalizing chamber from the second pressure equalizing chamber through a plurality of pressure equalizing holes distributed in an annular shape, so that the air is evenly distributed after entering the first pressure equalizing chamber, reducing the pressure difference gradient between the flowing air in all directions, thereby reducing the aerodynamic noise generated by eddy currents and pressure pulsations, and reducing the generation of noise. Moreover, the fan assembly is arranged in the inner chamber and the second pressure equalizing chamber, and when the air passes through, it can also exchange heat with the running fan assembly to achieve heat dissipation of the fan assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the structure of the power device of the cleaning equipment provided by the present invention;

[0026] Figure 2 It is a schematic cross-sectional structural diagram of a power device of a cleaning device provided by the present invention;

[0027] Figure 3 It is a schematic diagram of the exploded structure of the power device of the cleaning equipment provided by the present invention;

[0028] Figure 4 It is a structural schematic diagram of the third housing of the power device of the cleaning equipment provided by the present invention;

[0029] Figure 5 It is a structural schematic diagram of the second shell of the power device of the cleaning equipment provided by the present invention;

[0030] Figure 6 It is a schematic cross-sectional structural diagram of a second shell of a power device of a cleaning device provided by the present invention;

[0031] Figure 7 It is a structural schematic diagram of a muffler of a power device of a cleaning device provided by the present invention;

[0032] Figure 8 It is a schematic cross-sectional structural diagram of a muffler of a power device of a cleaning device provided by the present invention;

[0033] Fig. 9 It is a schematic structural diagram of a second vibration damping pad of a power device of a cleaning device provided by the present invention;

[0034] Fig.10 It is a schematic cross-sectional structural diagram of a second vibration damping pad of a power device of a cleaning device provided by the present invention;

[0035] Fig.11 It is a structural schematic diagram of a first vibration damping pad of a power device of a cleaning device provided by the present invention;

[0036] Fig.12 It is a structural schematic diagram of the first shell of the power device of the cleaning equipment provided by the present invention.

[0037] Reference numerals:

[0038] The first shell 110; the inner chamber 111; the outer chamber 112; the air inlet 113; the exhaust duct 114; the second shell 120; the cylindrical portion 121; the interlayer portion 122; the pressure equalizing hole 123; the first pressure equalizing chamber 124; the second pressure equalizing chamber 125; the third shell 130; the interlayer chamber 131; the arc groove 132; the silencer 140; the silencer chamber 141; the silencer hole 142; the support 150; the tubular portion 151; the central hole 152; the sound-absorbing cotton 160; the arc surface 161; the first vibration-damping pad 170; the annular groove 171; the vibration-damping layer 172; the second vibration-damping pad 180; the skirt portion 181; the cylindrical battery 190; the fan assembly 200; the fan body 210; the wind guide cover 220; the air duct inlet 221. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0041] The present invention provides a power device for cleaning equipment, which reduces the noise generated by the vibration of air fluid by ensuring the uniform flow of gas in the flow channel, thereby providing a noise reduction solution for the cleaning equipment and solving the noise reduction problem of the equipment.

[0042] Combine the following Figure 1-Figure 12 Various specific embodiments of the power device of the cleaning equipment of the present invention are described.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, the present invention provides a power device of a cleaning equipment, comprising: a first shell 110, having an inner chamber 111 and an outer chamber 112 with an open top, the inner chamber 111 being provided with an air inlet 113, and the outer chamber 112 being provided with an exhaust passage 114; a second shell 120, comprising a cylindrical portion 121 and a partition portion 122 fixed in the cylindrical portion 121, one end of the cylindrical portion 121 being docked with the opening at the top of the inner chamber 111, the partition portion 122 being provided with a plurality of pressure equalizing holes 123 distributed in a ring shape, the partition portion 122 dividing the space in the cylindrical portion 121 into a first pressure equalizing chamber 124 and a second pressure equalizing chamber 125; a third shell 130, which is covered above the second shell 120 and docked with the opening at the top of the outer chamber 112, and a sandwich chamber 131 is formed between the third shell 130 and the outer side surface of the cylindrical portion 121. With the cooperation of the first shell 110, the second shell 120 and the third shell 130, the above-mentioned shell structure realizes the flow channel structure in which the air inlet 113 is connected to the exhaust channel 114 through the inner chamber 111, the second pressure equalizing chamber 125, the first pressure equalizing chamber 124, the interlayer chamber 131 and the outer chamber 112 in sequence.

[0044] The power device of the cleaning equipment also includes a fan assembly 200, a part of which is located in the inner chamber 111, and the rest is located in the second pressure equalizing chamber 125. The outer shell structure of the fan assembly 200 is formed by the first shell 110, the second shell 120 and the third shell 130, which protects the fan assembly 200 while forming an air passage composed of the inner chamber 111, the second pressure equalizing chamber 125, the first pressure equalizing chamber 124, the interlayer chamber 131 and the outer chamber 112. The interlayer portion 122 separates the space in the cylindrical portion 121 into the first pressure equalizing chamber 124 and the second pressure equalizing chamber 125. During the air flow process, the air can only enter the first pressure equalizing chamber 124 from the second pressure equalizing chamber 125 through a plurality of pressure equalizing holes 123 distributed in an annular manner, so that the air is evenly distributed after entering the first pressure equalizing chamber 124, reducing the pressure difference gradient between the flowing air in all directions, thereby reducing the aerodynamic noise generated by the vortex and pressure pulsation, and reducing the generation of noise.

[0045] In addition, the mechanical noise generated by the fan assembly 200 during operation needs to pass through the chamber composed of the inner chamber 111 and the second pressure equalizing chamber 125, and the chamber composed of the interlayer chamber 131 and the outer chamber 112 before it can be transmitted to the outside, and the air in the two chambers can also absorb and reduce the mechanical noise. Moreover, the fan assembly 200 is arranged in the inner chamber 111 and the second pressure equalizing chamber 125. When the air passes through, it can also exchange heat with the running fan assembly 200 to achieve heat dissipation of the fan assembly 200.

[0046] like Figure 5 and Figure 6 As shown, the second shell 120 preferably adopts two circles of coaxial circular holes designed to be evenly distributed to form the above-mentioned multiple pressure equalizing holes 123 distributed in an annular manner. The fan assembly 200 drives the airflow through the pressure equalizing holes 123 and evenly enters the first pressure equalizing chamber 124 from the second pressure equalizing chamber 125, fully reducing the pressure difference gradient between the air in all radial directions of the device, and reducing the aerodynamic noise generated by air vortices and pressure pulsations. The gas in the first pressure equalizing chamber 124 is evenly entered into the interlayer chamber 131 by turning 180°, so that the air dissipates heat to the shell structure inside and outside the device during the flow.

[0047] According to the present invention, a power device of a cleaning device is provided, such as Figure 2 and Figure 3 As shown, a cylindrical muffler 140 is provided in the first pressure equalizing chamber 124, and the muffler 140 is coaxially arranged with the cylindrical portion 121. Figure 2 , Figure 7 and Figure 8 As shown, a silencer cavity 141 is formed inside the silencer 140, and a plurality of silencer holes 142 are evenly distributed on the outer peripheral wall of the silencer 140 to connect the inside and outside of the silencer cavity 141. Figure 2As shown, when the airflow passes through the outer peripheral wall of the muffler 140, the muffler hole 142 filters the noise within a certain frequency range, and the noise reduction effect can be improved by providing the muffler 140. The main body shape of the fan assembly 200 is preferably cylindrical, and the radial dimension of the muffler 140 is preferably close to the radial dimension of the fan assembly 200, or the radial dimension of the muffler 140 is the same as the radial dimension of the fan assembly 200, so that a uniform air flow channel can be formed around the muffler 140 and the fan assembly 200.

[0048] like Figure 7 and Figure 8 As shown, the structure of the silencer 140 is preferably a cylindrical sealed cavity, and a circular hole is opened on the outer side of the silencer 140 to form a micro-perforated plate sound absorption structure. The actual opening rate and aperture can be adaptively designed according to the operating frequency and bandwidth of the fan assembly 200. Compared with the traditional perforated silencer, when the above-mentioned silencer 140 is in use, the airflow flows vertically through the silencer hole 142 instead of passing through the silencer hole 142, thereby reducing the impact on the air circulation speed. In specific applications, cleaning equipment such as floor scrubbers have a high fan speed, usually above 60,000 rpm, and the shaft fundamental frequency generated by the fan is usually between 1000 Hz and 1500 Hz. The silencer 140 can be specifically designed with respect to the peak value of the fan fundamental frequency to achieve targeted noise reduction.

[0049] According to the power device of a cleaning device provided by the present invention, the muffler 140 can be directly installed between the third shell 130 and the second shell 120 to support both of them, or an additional supporting structure can be provided between the third shell 130 and the second shell 120 to limit the relative position between the two. Figure 2 As shown, a support member 150 is provided between the third housing 130 and the second housing 120. The support member 150 includes a tubular portion 151 supported between the interlayer portion 122 and the top of the third housing 130, the muffler 140 has a central hole 152 matching the tubular portion 151, and the muffler 140 is sleeved on the tubular portion 151; the interlayer portion 122 has an opening opposite to the tubular portion 151, so that the power supply line of the fan assembly 200 can extend to the outside of the third housing 130 through the tubular portion 151.

[0050] By providing the support member 150 between the second housing 120 and the third housing 130, it is possible not only to provide support between the second housing 120 and the third housing 130, but also to provide a power line for the fan assembly 200 through the tubular portion 151, thereby reducing the difficulty of structural design and disassembly and maintenance of the device. For example, the power line between the fan assembly 200 and the power supply element can be connected through the tubular portion 151 without disassembling the first housing 110, the second housing 120 and the third housing 130.

[0051] According to a power device of a cleaning device provided by the present invention, a sound-absorbing cotton 160 is arranged at the intersection of the outer chamber 112 and the exhaust passage 114. The sound-absorbing cotton 160 is preferably made of a porous material, and the sound-absorbing cotton 160 absorbs the energy of the sound waves, thereby achieving noise reduction. The sound-absorbing cotton 160 is at the intersection of the outer chamber 112 and the exhaust passage 114. When air passes through, the sound-absorbing cotton 160 absorbs the energy of the noise sound waves conducted in the air passing through the sound-absorbing cotton 160, thereby reducing the noise sound waves.

[0052] According to the present invention, a power device of a cleaning device is provided, such as Fig.12 As shown, the side of the sound-absorbing cotton 160 facing the outer chamber 112 is preferably an arc surface 161, and the arc surface 161 and the outer chamber 112 form an annular air duct structure. The arc surface 161 and the outer chamber 112 form an annular air duct structure, which can absorb noise energy while reducing the impact of the sound-absorbing cotton on air circulation, which is conducive to maintaining uniform air pressure in the annular air duct structure.

[0053] The fan assembly 200 can be suspended and installed between the second housing 120 and the first housing 110 through a bracket provided with a vibration reduction structure to prevent mechanical vibration from being directly transmitted to the housing structure. Figure 2 and Figure 3 As shown, the fan assembly 200 includes a fan body 210 and a funnel-shaped air guide cover 220, and the bottom of the air guide cover 220 is formed with an air duct inlet 221 opposite to the air inlet 113. A first vibration damping pad 170 is arranged between the fan body 210 and the interlayer portion 122, and a second vibration damping pad 180 is arranged between the air guide cover 220 and the inner chamber 111. The fan body 210 and the air guide cover 220 of the fan assembly 200 are respectively provided with a first vibration damping pad 170 and a second vibration damping pad 180, and the elastic vibration damping effect of the first vibration damping pad 170 and the second vibration damping pad 180 reduces the external vibration transmission of the fan assembly 200 during operation, thereby reducing the noise generated by mechanical vibration.

[0054] According to a preferred embodiment, Figure 2 As shown, the fan assembly 200 is in direct contact with only the first vibration damping pad 170 and the second vibration damping pad 180 in the device, and the first shell 110 and the second shell 120 limit and fix the fan assembly 200 via the first vibration damping pad 170 and the second vibration damping pad 180, thereby reducing the conduction of mechanical vibration.

[0055] According to a power device of a cleaning device provided by the present invention, the vibration reduction effect of the vibration reduction pad can be achieved only based on its own elastic material, or in a preferred case, such as Fig. 9 , Fig.10 and Fig.11As shown, at least one annular groove 171 is formed on the outer circumferential surface of the first vibration damping pad 170 and / or the second vibration damping pad 180, so as to form a plurality of vibration damping layers 172 on the outer circumference of the first vibration damping pad 170 and / or the second vibration damping pad 180. The plurality of vibration damping layers 172 of the first vibration damping pad 170 and / or the second vibration damping pad 180 can absorb vibration by utilizing elastic deformation by compressing the space of the annular groove 171, thereby improving the vibration damping performance of the first vibration damping pad 170 and / or the second vibration damping pad 180.

[0056] According to the present invention, a power device of a cleaning device is provided, such as Figure 2 , Fig. 9 and Fig.10 As shown, the second vibration damping pad 180 preferably has a skirt portion 181 that matches the shape of the air scoop 220, and the skirt portion 181 completely isolates the outer surface of the air scoop 220 from the inner surface of the inner chamber 111. The skirt portion 181 isolates the air scoop 220 from the inner chamber 111, so that the air scoop 220 and the inner chamber 111 can reduce vibration transmission in all directions based on the elastic deformation of the skirt portion 181, further preventing the increase of mechanical vibration noise due to rigid contact. Fig. 9 and Fig.10 As shown, the outer surface of the skirt portion 181 may also form a plurality of shallow annular grooves, which have a similar function to the annular grooves 171 described above, and increase the compression deformation performance and vibration reduction performance of the skirt portion 181 .

[0057] On the other hand, Figure 2 and Fig.10 As shown, the air inlet 113 of the inner chamber 111 preferably forms a convex structure facing the fan assembly 200, and the second vibration damping pad 180 forms a concave structure matching the air inlet 113 on the side close to the air inlet 113. The cooperation of the convex structure and the concave structure is conducive to the relative position definition of the air guide cover 220 and the inner chamber 111. Under the mechanical vibration generated by the operation of the fan assembly 200, the convex structure and the concave structure match each other to prevent the second vibration damping pad 180 from being displaced. When the second vibration damping pad 180 has relatively reliable stability, the vibration damping performance of the second vibration damping pad 180 can be fully utilized, and a better sealing effect can be provided between the inner chamber 111 and the air guide cover 220.

[0058] According to market demand, cleaning equipment is gradually developing towards miniaturization and lightness. In a limited space, not only noise reduction should be considered, but also the battery temperature during equipment operation. When the battery temperature is too high, it is easy to cause battery damage or trigger power protection, which not only easily reduces the battery life, but also makes it impossible for users to complete the cleaning operation smoothly.

[0059] According to the present invention, a power device of a cleaning device is provided, such as Figure 1 and Figure 3As shown, a battery pack is formed by a plurality of cylindrical batteries 190. Figure 4 As shown, the outer peripheral surface of the third housing 130 is preferably formed with an arc groove 132 for defining the installation position of the cylindrical battery 190; the air flowing in the interlayer chamber 131 can exchange heat with the cylindrical battery 190 in the arc groove 132 through the heat conduction of the third housing 130. According to the power device of this embodiment, the air flow inside the third housing 130 can be used to dissipate heat from the battery pack.

[0060] Specifically, when the fan assembly 200 is running, the cylindrical battery 190 generates heat while supplying power, and the arc groove 132 of the third shell 130 increases the contact area with the cylindrical battery 190, so that the heat is quickly transferred to the third shell 130. The heat is heat-exchanged with the air flowing in the inner interlayer chamber 131 of the third shell 130 to achieve an indirect air-cooling and heat dissipation effect on the cylindrical battery 190, which can prevent the battery pack from being overheated.

[0061] The present invention also provides a cleaning device, comprising a power device of the cleaning device of any one of the above embodiments, and the cleaning device may be a commonly used household cleaning electrical device such as a floor scrubber or a vacuum cleaner.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power device for cleaning equipment, characterized in that: include: A first shell (110) having an inner chamber (111) with an open top and an outer chamber (112), wherein the inner chamber (111) is provided with an air inlet (113), and the outer chamber (112) is provided with an exhaust passage (114); The second shell (120) comprises a cylindrical portion (121) and a partition portion (122) fixed in the cylindrical portion (121), one end of the cylindrical portion (121) is docked with the opening at the top of the inner chamber (111), the partition portion (122) is provided with a plurality of pressure equalizing holes (123) distributed in an annular shape, and the partition portion (122) divides the space in the cylindrical portion (121) into a first pressure equalizing chamber (124) and a second pressure equalizing chamber (125); A third shell (130) is disposed above the second shell (120) and is docked with the opening at the top of the outer chamber (112), so that an interlayer chamber (131) is formed between the third shell (130) and the outer side surface of the cylindrical portion (121); A fan assembly (200), a portion of which is located in the inner chamber (111), and the rest of which is located in the second pressure equalizing chamber (125); The air inlet (113) is connected to the exhaust passage (114) through the inner chamber (111), the second pressure equalizing chamber (125), the first pressure equalizing chamber (124), the interlayer chamber (131) and the outer chamber (112) in sequence.

2. The power device of the cleaning equipment according to claim 1, characterized in that: A cylindrical silencer (140) is provided in the first pressure equalizing chamber (124), and the silencer (140) is coaxially arranged with the cylindrical portion (121); A silencer cavity (141) is formed inside the silencer (140), and a plurality of silencer holes (142) communicating with the inside and outside of the silencer cavity (141) are evenly distributed on the outer peripheral wall of the silencer (140).

3. The power device of the cleaning equipment according to claim 2, characterized in that: A support member (150) is provided between the third shell (130) and the second shell (120); The support member (150) comprises a tubular portion (151) supported between the barrier portion (122) and the top of the third shell (130), the muffler (140) has a central hole (152) matching the tubular portion (151), and the muffler (140) is sleeved on the tubular portion (151); The partition portion (122) has an opening opposite to the tubular portion (151), so that the power supply line of the fan assembly (200) can extend to the outside of the third housing (130) through the tubular portion (151).

4. The power device of the cleaning equipment according to claim 1, characterized in that: Sound-absorbing cotton (160) is provided at the intersection of the outer chamber (112) and the exhaust passage (114).

5. The power device of the cleaning equipment according to claim 4, characterized in that: The side of the sound-absorbing cotton (160) facing the outer chamber (112) is a curved surface (161), and the curved surface (161) and the outer chamber (112) are combined to form an annular air duct structure.

6. The power device of the cleaning equipment according to claim 1, characterized in that: The fan assembly (200) comprises a fan body (210) and a funnel-shaped wind guide cover (220), wherein a wind duct inlet (221) opposite to the air inlet (113) is formed at the bottom of the wind guide cover (220); A first vibration-damping pad (170) is arranged between the fan body (210) and the barrier layer portion (122), and a second vibration-damping pad (180) is arranged between the air guide cover (220) and the inner chamber (111).

7. The power device of the cleaning equipment according to claim 6, characterized in that: At least one annular groove (171) is formed on the outer circumferential surface of the first vibration damping pad (170) and / or the second vibration damping pad (180), so as to form a plurality of vibration damping layers (172) on the outer circumference of the first vibration damping pad (170) and / or the second vibration damping pad (180).

8. The power device of the cleaning equipment according to claim 6, characterized in that: The second vibration-damping pad (180) has a skirt portion (181) that matches the shape of the air guide cover (220), and the skirt portion (181) completely isolates the outer surface of the air guide cover (220) from the inner surface of the inner chamber (111); And / or, the air inlet (113) of the inner chamber (111) forms a convex structure facing the fan assembly (200), and the second vibration damping pad (180) forms a concave structure matching the air inlet (113) on a side close to the air inlet (113).

9. The power device of the cleaning equipment according to any one of claims 1 to 8, characterized in that: A battery pack comprising a plurality of cylindrical batteries (190); The outer peripheral surface of the third housing (130) is formed with an arc-shaped groove (132) for defining the installation position of the cylindrical battery (190); The air flowing in the interlayer chamber (131) can exchange heat with the cylindrical batteries (190) in the arc-shaped grooves (132) through the heat conduction effect of the third shell (130).

10. A cleaning device, characterized in that: A power device comprising the cleaning equipment according to any one of claims 1 to 9.

Images