WO2020135066A1

WO2020135066A1 - Handheld cleaning apparatus

Info

Publication number: WO2020135066A1
Application number: PCT/CN2019/124799
Authority: WO
Inventors: 王志宝; 靳思宇; 周威
Original assignee: 江苏美的清洁电器股份有限公司; 美的集团股份有限公司
Priority date: 2018-12-28
Filing date: 2019-12-12
Publication date: 2020-07-02
Also published as: CN109602327A

Abstract

Disclosed is a handheld cleaning apparatus (100), comprising a handle (10), an electric motor assembly (2), a cyclone separation assembly (3), and a fluid channel (4). The cyclone separation assembly (3) is provided with an air inlet opening (3a) and an air outlet opening (3b), and the cyclone separation assembly (3) comprises a first-stage cyclone unit (31) and a second-stage cyclone unit (32) connected to each other in series, with chambers of the first-stage cyclone unit (31) and the second-stage cyclone unit (32) being arranged in parallel; and the fluid channel (4) is used for communicating the chambers of the first-stage cyclone unit (31) and the second-stage cyclone unit (32) with one another, and the fluid channel (4) is located outside the two chambers. The handheld cleaning apparatus (100) is simple in structure, and has a good dust removal effect.

Description

Handheld cleaning equipment

Cross-reference of related applications

This application is based on a Chinese patent application with an application number of 201811628847.9 and an application date of December 28, 2018, and claims the priority of the above-mentioned Chinese patent application. The entire contents of the above-mentioned Chinese patent application are incorporated herein by reference.

Technical field

The present application relates to the technical field of cleaning equipment, in particular to a handheld cleaning equipment.

Background technique

At present, the multi-stage cyclone separation system is a hot selling point in the vacuum cleaner industry, and has great commercial use for the vacuum cleaner industry. The handheld vacuum cleaner is one of the important directions of the current industry development. Many handheld vacuum cleaners use a multi-stage cyclone separation system device. The separation device includes a single first separation unit and multiple second cyclone separation units. The air inlet enters the belt The air with debris enters the air inlet channel and successively passes through the first and second cyclone separation units. Larger garbage and part of the dust in the work are separated from the air flow in the first cyclone separation unit, large particles of garbage and foreign objects will be collected in the first dust chamber; then the airflow with some fine dust particles enters the second In the cyclone separation, most of the dust particles are collected in the second dust chamber by the second cyclone separation device; a very small part of the dust is separated from the air in the separation unit again, and finally the air flow with a small amount of dust is filtered by the filter cotton Back into the air.

The existing cyclone separation device for a vacuum cleaner generally includes a first cyclone separation unit and a second cyclone separation unit located inside the first cyclone separation. The first cyclone device is a single cyclone device, and the axis is perpendicular to the horizontal direction, and the second cyclone device includes a plurality of combined level cyclone separation devices. The dust chamber of the first stage is outside the first cyclone device, and the second dust chamber is inside the first cyclone device. The existing dust cup separation device has the following disadvantages

1. In the existing dust cup separation device, the second-stage separation device is above or inside the dust bucket, the structure is complicated, the volume is increased at the same time, and the sealing requirement is relatively high.

2. The structure is relatively complex, and it is not easy to disassemble during cleaning.

3. Adopting the enclosed structure, the size and structure of the first-stage separation device and the second-stage separation device restrict each other and have a negative impact on the separation efficiency.

4. The flow channel is complicated, which is not conducive to the improvement of filtration efficiency.

Summary of the invention

This application aims to solve at least one of the technical problems in the prior art. To this end, the present application proposes a hand-held cleaning device. The hand-held cleaning device has a simple structure, is convenient to disassemble, and has a simple flow channel and high filtration efficiency.

A hand-held cleaning device according to an embodiment of the present application includes: a handle that is adapted to be gripped during use; a motor assembly that is used to generate a flowing air flow; a cyclone separation assembly, the cyclone separation assembly having At the air inlet and the air outlet, the cyclone separation assembly includes a first-stage cyclone unit and a second-stage cyclone unit connected in series with each other, and the first-stage cyclone unit and the second-stage cyclone unit respectively have independent chambers to perform Cyclone separation and dust removal, the chambers of the first-level cyclone unit and the second-level cyclone unit are juxtaposed; the fluid channel is used to connect the first-level cyclone unit and the second-level cyclone unit The chamber, the fluid channel is located outside the two chambers; the dust-containing airflow flows from the air inlet into the chamber of the first-stage cyclone unit under the action of the motor assembly, and the rear airflow passes through The fluid channel leaves the first-stage cyclone unit and enters the second-stage cyclone unit downstream.

According to the handheld cleaning device of the embodiment of the present application, since the cyclone separation assembly includes the first-stage cyclone unit and the second-stage cyclone unit connected in series with each other, and the dust-containing airflow flows into the first stage from the air inlet a under the action of the motor assembly In the chamber of the cyclone unit, the rear airflow leaves the first-stage cyclone unit through the fluid channel and enters the downstream second-stage cyclone unit, which simplifies the structure of the cyclone separation assembly and simplifies the structure of the fluid channel, thereby simplifying the handheld cleaning equipment The structure improves the efficiency of cyclone dust removal.

In some embodiments, the bottom of the chamber of the first-stage cyclone unit and the bottom of the chamber of the second-stage cyclone are respectively formed with inverted dust outlets, and the two inverted dust outlets are arranged flush.

In some embodiments, the motor assembly is located above the cyclone separation assembly, the axis of the motor assembly is arranged horizontally, and the axis of the cyclone separation assembly is arranged vertically.

In some embodiments, the first-stage cyclone unit has a first outlet communicating with the fluid channel, and a first wind guide structure corresponding to the first outlet is provided in the fluid channel, the first The wind guide structure includes at least one of an arc surface and a tapered surface. .

In some specific embodiments, the first outlet is disposed toward the outer wall of the motor assembly, and the outer wall of the motor assembly is an arc-shaped wall at least at a portion facing the first-stage cyclone unit, the arc-shaped wall It is formed as the first wind guide structure.

In some embodiments, the second-stage cyclone unit has a second outlet with the motor assembly, and a second corresponding to the second outlet is provided between the motor assembly and the second-stage cyclone separation unit A second wind-guiding structure, the second wind-guiding structure includes at least one of a curved surface and a conical surface.

In some specific embodiments, a filter cotton directly facing the second-stage cyclone unit is provided between the motor assembly and the second-stage cyclone separation unit, and the second outlet is disposed toward the outer wall of the filter cotton, At least a portion of the outer wall of the filter cotton facing the second-stage cyclone unit is an arc-shaped surface, and the arc-shaped surface is the second wind guide structure.

In some embodiments, the first cyclone unit includes a first cyclone, the first cyclone is formed as a cylinder, and an upper portion of the first cyclone unit is formed as a first in communication with the fluid channel At the outlet, the lower part of the first cyclone separator is provided with a cyclone ash pressing device to prevent dust from swirling up again.

In some specific embodiments, the cyclone ash pressing device includes: a connecting portion that extends into the first-stage cyclone unit; an ash pressing portion, the ash pressing portion is located below the connecting portion, In the radial direction of the first cyclone, the size of the soot is larger than the size of the first cyclone.

In some optional embodiments, the ash pressing portion is provided with a plurality of dust falling holes, and the plurality of dust falling holes are distributed around the interval of the first cyclone separator.

In some embodiments, the second-stage cyclone unit includes at least one second cyclone separator. When the second cyclone is separated into two, a plurality of the second cyclones are arranged in parallel, and a plurality of the The second cyclone separator is located on the rear side of the first-stage cyclone unit.

In some specific embodiments, each of the second cyclone separators is formed as a cyclone cone, and a plurality of the cyclone cones are arranged in a first shape or an arc shape.

In some embodiments, an air inlet pipe is connected to the air inlet, and the axis direction of the air inlet pipe is parallel or perpendicular to the axis direction of the motor assembly.

Additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description, or be learned through practice of the present application.

BRIEF DESCRIPTION

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

FIG. 1 is an internal structure and airflow diagram of a handheld cleaning device according to an embodiment of the present application.

FIG. 2 is a partial structural diagram of the handheld cleaning device shown in FIG. 1.

3 is a cross-sectional view of the handheld cleaning device shown in FIG. 1 in another direction.

4 is a cyclone ashing device of the handheld cleaning device shown in FIG. 1.

5 is a schematic view of the appearance of a handheld cleaning device according to another embodiment of the present application.

6 is a schematic diagram of the internal structure of the handheld cleaning device shown in FIG. 5.

Reference mark:

Handheld cleaning equipment 100,

Motor assembly 2.

Cyclone separation module 3, air inlet 3a, air outlet 3b, ash outlet 3c,

The first stage cyclone unit 31,

The first cyclone 311,

First dust chamber 312, first outlet 3121

Cyclone ash pressing device 313, connecting part 3131, ash pressing part 3132,

Second-level cyclone unit 32,

The second cyclone 321,

Second dust chamber 322, second outlet 3221

The fluid channel 4, the air inlet pipe 5, the first air guide structure 6, the second air guide structure 7, the air inlet tube 8, the filter cotton 9, and the handle 10.

detailed description

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present application, and cannot be construed as limiting the present application.

In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", The azimuth or positional relationship indicated by "inner", "outer", "axial", "radial", "circumferential", etc. is based on the azimuth or positional relationship shown in the drawings, just for the convenience of describing the application and simplification The description does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the present application. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, the meaning of "plurality" is two or more.

In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connected", and "connected" should be understood in a broad sense, for example, it can be fixed or detachable Connected, or connected integrally; either mechanically or electrically; directly connected, or indirectly connected through an intermediary, or internally connected between two components. For those of ordinary skill in the art, the specific meaning of the above terms in this application can be understood in specific situations.

The handheld cleaning device 100 according to an embodiment of the present application is described below with reference to FIGS. 1-4.

As shown in FIGS. 1-2, the handheld cleaning device 100 according to an embodiment of the present application includes a handle 10, a motor assembly 2, a cyclone separation assembly 3, and a fluid channel 4, the handle 10 is suitable for gripping when in use, and the motor assembly 2 For generating a flowing air flow, the cyclone separation assembly 3 has an air inlet 3a and an air outlet 3b. The cyclone separation assembly 3 includes a first-stage cyclone unit 31 and a second-stage cyclone unit 32 connected in series with each other, a first-stage cyclone unit 31 and a second The first-level cyclone unit 32 has separate chambers for cyclone separation and dust removal. The chambers of the first-level cyclone unit 31 and the second-level cyclone unit 32 are arranged side by side. The fluid channel 4 is used to communicate the first-level cyclone unit 31 and the second In the chamber of the first-level cyclone unit 32, the fluid channel 4 is located outside the two chambers. After the dust-containing airflow flows into the chamber of the first-level cyclone unit 31 from the air inlet 3a under the action of the motor assembly 2, the airflow passes through the fluid channel 4 Leaving the first-stage cyclone unit 31 and turning into the downstream second-stage cyclone unit 32.

It can be understood that in the embodiment of the present application, the dust-containing airflow flows from the air inlet 3a to the chamber of the first-stage cyclone unit 31 under the action of the motor assembly 2 and leaves the first-stage cyclone unit 31 through the fluid passage 4 and turns Entering the downstream second-stage cyclone unit 32, that is, the first-stage cyclone unit 31 and the second-stage cyclone unit 32 are arranged in series, and since the first-stage cyclone unit 31 and the second-stage cyclone unit 32 are arranged side by side, such a row Compared with the existing enclosed cyclone separation device, the distribution method has the characteristics of simple structure and simple flow channel. In addition, since the first-stage cyclone unit 31 and the second-stage cyclone unit 32 have separate chambers for cyclone separation and dust removal, the efficiency and effect of cyclone separation and dust removal are improved to a certain extent.

According to the hand-held cleaning device 100 of the embodiment of the present application, since the cyclone separation assembly 3 includes the first-stage cyclone unit 31 and the second-stage cyclone unit 32 connected in series with each other, and the dust-containing airflow flows from the air inlet 3a under the action of the motor assembly 2 After flowing into the chamber of the first-stage cyclone unit 31, the rear airflow leaves the first-stage cyclone unit 31 through the fluid channel 4 and turns into the downstream second-stage cyclone unit 32, simplifying the structure of the cyclone separation assembly 3 and simplifying the fluid channel The structure of 4 simplifies the structure of the handheld cleaning device 100 and improves the efficiency of dust removal by cyclone separation.

It should be added here that the fluid channel 4 may be a separate air pipe connected between the first outlet 3121 of the first-stage cyclone unit 31 and the second inlet of the second-stage cyclone unit 32, or may be a motor assembly 2. The outer casing of the outer shell of the second stage cyclone unit 31 and the second cyclone unit defines a flow channel.

In some embodiments, as shown in FIG. 1, the bottom of the chamber of the first-level cyclone unit 31 and the bottom of the chamber of the second-level cyclone unit respectively form an inverted ash port 3c, and the two inverted ash ports 3c are arranged flush. It can be understood that the ash pouring port 3c of the first-stage cyclone unit 31 and the ash pouring port 3c of the second-stage cyclone unit 32 are arranged flush with each other, and one-key ash pouring can be realized. That is to say, one sealing cover on the dust pouring port 3c of the first-stage cyclone unit 31 and the second-stage cyclone unit 32 can be used, which can simplify the structure of the handheld cleaning device 100 and facilitate the user to pour dust.

In some embodiments, as shown in FIG. 1, the motor assembly 2 is located above the cyclone separation assembly 3, the axis of the motor assembly 2 is arranged horizontally, and the axis of the cyclone separation assembly 3 is arranged vertically. It can be understood that the motor assembly 2 is located above the cyclone separation assembly 3 and the axis of the motor assembly 2 is perpendicular to the axial direction of the cyclone separation assembly 3, such an arrangement can reduce the volume of the handheld cleaning device 100 as much as possible, Therefore, the miniaturized design of the handheld cleaning device 100 is better achieved. Of course, it should be noted here that when the motor assembly 2 is located above the cyclone separation assembly 3, the axes of the motor assembly 2 and the cyclone separation assembly 3 may also be arranged in parallel. In addition, in other embodiments of the present application, the motor assembly 2 may also be located elsewhere in the cyclone separation assembly 3.

In some embodiments, as shown in FIG. 1, the first-stage cyclone unit 31 has a first outlet 3121 communicating with the fluid channel 4, and a first wind guide structure 6 corresponding to the first outlet 3121 is provided in the fluid channel 4. The first wind guide structure 6 includes at least one of an arc-shaped surface and a tapered surface. It can be understood that when the airflow from the first outlet 3121 impinges on the first air guide structure 6, the first air guide structure 6 can play a guiding role, so that the airflow flows better to the second inlet, the first The presence of the air guide structure 6 can reduce the flow resistance of the airflow, so that the airflow flows to the second-stage cyclone unit 32 faster, thereby improving the dust removal efficiency of the handheld cleaning device 100.

In some specific embodiments, as shown in FIG. 3, the first outlet 3121 is disposed toward the outer wall of the motor assembly 2, and the outer wall of the motor assembly 2 is an arc-shaped wall at least in a portion facing the first-stage cyclone unit 31. The wall is the first wind guide structure 6. It can be understood that the outer wall of the motor assembly 2 is the first wind guide structure 6 at least in the portion facing the first-stage cyclone unit 31, so that it is not necessary to provide another first wind guide structure 6 in the fluid passage 4 to a certain extent The internal structure of the handheld cleaning device 100 is simplified. Moreover, in this case, the fluid passage 4 is defined by the housings of the motor assembly 2 and the cyclone separation assembly 3, which eliminates the need to install a connecting pipe between the motor assembly 2 and the cyclone separation assembly 3 to form the fluid passage 4, simplifying The structure of the handheld cleaning device 100 is described.

It should be additionally noted that, in the embodiment of the present application, the first wind guiding structure 6 may be a complete arc surface or the first wind guiding structure 6 composed of multiple small convex hulls. Advantageously, the center of the first wind guide structure 6 is closer to the first outlet 3121 relative to the periphery or the peripheral partial area, and the center of the first wind guide structure 6 and the periphery or the peripheral partial area are transitioned by a straight line or a curve. In this way, the first wind guiding structure 6 can play a better wind guiding function, so that the airflow can flow to the second inlet more quickly after flowing out from the first outlet 3121. Of course, in other embodiments of the present application, the first wind guide structure 6 may also be formed as another structure that is easy to guide wind, and is not limited to the above structure.

In some embodiments, as shown in FIG. 1, the second-stage cyclone unit 32 has a second outlet 3221 corresponding to the motor assembly 2, and a second outlet 3221 corresponding to the second outlet 3221 is provided between the motor assembly 2 and the second-stage cyclone unit 32. The second wind guiding structure 7 includes at least one of an arc-shaped surface and a conical surface. It can be understood that when the airflow from the second outlet 3221 impinges on the second wind guide structure 7, the second wind guide structure 7 can play a guiding role, so that the airflow flows better to the air outlet of the motor assembly 2 In the direction 3b, the presence of the second wind guide structure 7 can reduce the flow resistance of the airflow, so that the airflow flows toward the air outlet 3b faster, thereby improving the dust removal efficiency of the handheld cleaning device 100.

In some specific embodiments, as shown in FIG. 1, the motor assembly 2 and the second-stage cyclone separation unit 32 are provided with a filter cotton 9 directly facing the second-stage cyclone unit 32, and the second outlet 3221 faces the filter cotton 9. The outer wall is provided, and the outer wall of the filter cotton 9 has an arc-shaped surface at least at a portion facing the second-stage cyclone unit 32, and the arc-shaped surface is the second wind guide structure 7.

It can be understood that the outer wall of the filter cotton 9 has an arc-shaped surface at least at the portion facing the second-stage cyclone unit 32, and this arc-shaped surface constitutes a second wind guide structure corresponding to the arrangement of the second outlet 3221 in the fluid passage 4 7. It should be added here that the center of the second wind guide structure 7 is closer to the second outlet 3221 relative to the periphery or the peripheral partial area, and the center of the second wind guide structure 7 and the peripheral or peripheral partial area are transitioned by a straight line or a curve. In this way, the second wind guiding structure 7 can play a better wind guiding role, so that the airflow can flow more quickly to the air outlet 3b of the motor assembly 2 after flowing out from the second outlet 3221. Of course, in other embodiments of the present application, the second wind guide structure 7 may also be formed as another structure that is easy to guide wind, and is not limited to the above structure.

In some embodiments, as shown in FIG. 1, the first-stage cyclone unit 31 includes a first cyclone separator 311, the first cyclone separator 311 is formed as a cylinder, and an upper portion of the first cyclone separator 311 is formed with a fluid passage 4. The first outlet 3121 communicating with each other. The lower part of the first cyclone 311 is provided with a cyclone ashing device 313 which prevents dust from swirling up again. Thus, the cyclone ashing device 313 can prevent the dust at the bottom of the dust chamber of the first-stage cyclone unit 31 from being re-swept, thereby reducing the efficiency of the cyclone separating dust of the first-stage cyclone unit 31.

In some specific embodiments, as shown in FIGS. 1 and 4, the cyclonic ash pressing device 313 includes a connecting portion 3131 and an ash pressing portion 3132. The connecting portion 3131 extends into the first-stage cyclone unit 31, and the ash pressing portion 3132 is located Below the connecting portion 3131, in the radial direction of the first cyclone 311, the size of the ash pressing portion 3132 is larger than the size of the first cyclone 311. It can be understood that, in the radial direction of the first cyclone separator 311, the size of the ash pressing portion 3132 is larger than that of the first cyclone separator 311, which can better prevent the dust at the bottom of the first dust chamber 312 from turning up Phenomenon occurred.

In some optional embodiments, as shown in FIG. 4, a plurality of dust falling holes 31321 are provided on the soot pressing portion 3132, and the plurality of dust falling holes 31321 are distributed around the interval of the first cyclone separator 311. It can be understood that since the size of the ash pressing part 3132 is larger than the size of the first cyclone 311, the ash pressing part 3132 is provided with a plurality of dust falling holes 31321 provided around the first cyclone separator 311, and the dust falling holes 31321 ensure the pressure The ash portion 3132 is less likely to accumulate ash, thereby reducing the possibility that dust on the ash pressing portion 3132 may be turned up again. Advantageously, the ash pressing portion 3132 is spaced apart from the inner wall of the first dust chamber 312, which ensures that garbage and foreign matter are smoothly entered into the first dust chamber 312.

It should be additionally noted here that the dust falling hole 31321 is only used to avoid the accumulation of dust in the dust pressing portion 3132, and the specific shape and number of the dust falling hole 31321 are not limited here.

In some embodiments, as shown in FIG. 2, the second-stage cyclone unit 32 includes at least one second cyclone 321. When there are multiple second cyclones 321, the multiple second cyclones 321 are arranged in parallel. A plurality of second cyclone separators 321 are located on the rear side of the first-stage cyclone unit 31. It can be understood that the airflow entering the second-stage cyclone unit 32 from the second inlet can be split into a plurality of second cyclones 321 arranged in parallel, which can improve the cyclone separation efficiency and speed of the second-stage cyclone unit 32, Therefore, the dust removal efficiency of the handheld cleaning device 100 is improved.

In some specific embodiments, each second cyclone separator 321 is formed as a cyclone cone, and a plurality of cyclone cones are arranged along a set direction that is perpendicular to the front-rear direction of the cyclone cone and the axis direction of the cyclone cone, respectively Direction. As a result, the plurality of cyclone cones reduces the volume of the second-stage cyclone unit 32 while ensuring the efficiency of the second-stage cyclone unit 32 to separate dust, thereby reducing the volume of the entire handheld cleaning device 100. Of course, it should be noted here that the second cyclone separator 321 is not limited to the cyclone cone, and the second cyclone separator 321 may be any tangential inlet second cyclone separator 321 or axial second cyclone separator 321.

In some embodiments, as shown in FIG. 1, an air inlet pipe 85 is connected to the air inlet 3 a, and the axis direction of the air inlet pipe 85 is parallel or perpendicular to the axis direction of the motor assembly 2. It can be understood that, in some embodiments, the axis direction of the air inlet pipe 85 may be parallel to the axis direction of the motor assembly 2, and the air inlet pipe 85 is located on the front side wall of the cyclone separation assembly 3. In some embodiments, as shown in FIGS. 5-6, the axial direction of the air inlet pipe 85 is perpendicular to the axis direction of the motor assembly 2, and the air inlet pipe 85 is located on the lower side wall of the cyclone separation assembly 3, As shown in FIG. 5, the air inlet 3a may also be located at the bottom of the unit chamber of the first-stage cyclone separation 311 unit. The first cyclone separator 311 is the separator that generates the cyclone through the spiral air channel after entering the center, or the first cyclone separation The generator 311 is a separator that generates a cyclone by a spiral guide blade, and those skilled in the art can make corresponding changes according to the design of the existing cyclone, which is not limited herein.

In some embodiments, the power supply portion of the hand-held cleaning device 100 is located at the lower end of the handle 10, and the upper end of the handle 10 is connected to the motor assembly 2 or supports the motor assembly 2 and the cyclone separation assembly 3 by connecting a support plate.

The structure of the handheld cleaning device 100 according to a specific embodiment of the present application is described below with reference to FIGS. 1-4.

The handheld cleaning device 100 of this embodiment includes a motor assembly 2, a cyclone separation assembly 3, a fluid channel 4 and a handle 10. , The handle 10 is set to be suitable for gripping when in use, the motor assembly 2 is set to generate a flowing air flow, the cyclone separation assembly 3 has an air inlet 3a and an air outlet 3b, and the cyclone separation assembly 3 includes first-level cyclones connected in series The unit 31 and the second-stage cyclone unit 32, the first-stage cyclone unit 31 and the second-stage cyclone unit 32 respectively have independent chambers for cyclone separation and dust removal. The first-stage cyclone unit 31 includes a first cyclone separator 311 and a first dust chamber 312, and the second-stage cyclone unit 32 includes a second cyclone separator and a second dust chamber 322. The first dust chamber 312 and the second dust chamber 322 are arranged side by side. The fluid channel 4 is used to communicate the first dust chamber 312 and the second dust chamber 322. The fluid channel 4 is located outside the two dust chambers. The air flows into the first dust chamber 312 from the air inlet 3a, and the rear airflow leaves the first dust chamber 312 through the fluid channel 4 and enters the downstream second dust chamber 322.

The bottom of the first dust chamber 312 and the bottom of the second dust chamber 322 are respectively formed with dust pouring ports 3c, and the two dust pouring ports 3c are arranged flush. The motor assembly 2 is located above the cyclone separation assembly 3, the axis of the motor assembly 2 is arranged horizontally, and the axis of the cyclone separation assembly 3 is arranged vertically. The first dust chamber 312 has a first outlet 3121 communicating with the fluid channel 4, and a first wind guide structure 6 corresponding to the first outlet 3121 is provided in the fluid channel 4. The first outlet 3121 is disposed toward the outer wall of the motor assembly 2, and the outer wall of the motor assembly 2 is at least a first wind guide structure 6 at a portion facing the first cyclone unit. The second-stage cyclone unit 32 has a second outlet 3221 communicating with the motor assembly 2. A filter cotton 9 facing the second-stage cyclone unit 32 is provided between the motor assembly 2 and the second-stage cyclone unit, and the second outlet 3221 faces The outer wall of the filter cotton 9 is provided, and the outer wall of the filter cotton 9 is the second wind guide structure 7 at least in a portion facing the second-stage cyclone unit 32.

The first-stage cyclone unit 31 includes a first cyclone separator 311, the first cyclone separator 311 is formed as a cylinder, an upper portion of the first cyclone separator 311 is formed as a first outlet 3121 communicating with the fluid passage 4, the first cyclone is separated The lower part of the device 311 is provided with a cyclone ashing device 313 which prevents the dust from re-cycling. The cyclone ash pressing device 313 includes a connecting portion 3131 and an ash pressing portion 3132, the connecting portion 3131 extends into the first-stage cyclone unit 31, the ash pressing portion 3132 is located below the connecting portion 3131, in the radial direction of the first cyclone separator 311 The size of the ash pressing part 3132 is larger than the size of the first cyclone 311. The dust pressing part 3132 is provided with a plurality of dust falling holes 31321, and the plurality of dust falling holes 31321 are distributed around the interval of the first cyclone separator 311. The second-stage cyclone unit 32 includes a plurality of second cyclones 321 arranged in parallel, and the plurality of second cyclones 321 are located on the rear side of the first-stage cyclone unit 31. Each second cyclone separator 321 is formed as a cyclone cone, and a plurality of cyclone cones are arranged along a set direction that is perpendicular to the front-rear direction of the cyclone cone and the axis direction of the cyclone cone, respectively. An air inlet pipe 85 is connected to the air inlet 3a, and the axis direction of the air inlet pipe 85 is parallel to the axis direction of the motor assembly 2.

The working process of the handheld cleaning device 100 of this embodiment is as follows:

The air fluid entrained with garbage is sucked in from the air inlet 3a, making a circular motion in the first dust chamber 312 macroscopically, most of the garbage and large particles of impurities are thrown out under the action of centrifugal force and gravity, and finally the garbage settles in the first dust The bottom of the cavity 312. The fine dust that has not been separated follows the air flow into the fluid channel 4 through the first cyclone separator 311, is guided by the first wind guide structure 6 and then enters the second dust chamber 322 with the air flow, and then is brought into the second cyclone separator 321 by the air flow, Under the action of centrifugal force and gravity, most of the dust enters the bottom of the second dust chamber 322, and the air flow with a small amount of very small dust passes through the second outlet 3221, passes through the filter cotton 9, and enters the outside air.

The handheld cleaning device 100 of this embodiment has the following advantages;

1. The structural system combining the first-level cyclone separation unit and the second-level separation unit has a high cyclone separation effect.

2. The two-stage separator has an independent dust chamber structure. The first dust chamber 312 and the second dust chamber 322 are arranged side by side, and the lower cross sections of the two dust chambers are on the same plane. The structure is arranged reasonably, which is convenient for pouring dust.

3. The motor assembly 2 and the filter cotton are placed horizontally above the cyclone separation assembly 3, which is convenient for size and weight control.

4. A cyclone ash device 313 is designed at the lower end of the first cyclone 311 to improve the separation efficiency.

5. A guide structure (the first air guide structure 6 and the second air guide structure 7) is provided at the outlet of the first cyclone separator 311 and the outlet of the second cyclone separator 321 to guide the airflow and reduce the airflow resistance, Improve the cyclone separation efficiency. .

In the description of this specification, the description with reference to the terms "embodiments", "examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application . In this specification, the schematic expression of the above term does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Although the embodiments of the present application have been shown and described, those of ordinary skill in the art may understand that various changes, modifications, replacements, and variations can be made to these embodiments without departing from the principle and purpose of the present application, The scope of the application is defined by the claims and their equivalents.

Claims

A hand-held cleaning device, characterized in that it includes:

Handle, the handle is suitable for grasping when using;

A motor assembly that generates a flowing air flow;

A cyclone separation assembly having an air inlet and an air outlet, the cyclone separation assembly includes a first-stage cyclone unit and a second-stage cyclone unit connected in series with each other, the first-stage cyclone unit and the second-stage cyclone unit The cyclone units each have independent chambers for cyclone separation and dust removal, and the chambers of the first-level cyclone unit and the second-level cyclone unit are arranged side by side;

A fluid channel for connecting the chambers of the first-level cyclone unit and the second-level cyclone unit, the fluid channel is located outside the two chambers; the dust-containing airflow is in the motor After the component flows from the air inlet into the chamber of the first-stage cyclone unit, the airflow leaves the first-stage cyclone unit through the fluid channel and enters the second-stage cyclone unit downstream.
The hand-held cleaning device according to claim 1, wherein the bottom of the chamber of the first-level cyclone unit and the bottom of the chamber of the second-level cyclone unit are respectively formed with inverted ash outlets, and two of the inverted Gray level setting.
The hand-held cleaning device according to claim 1 or 2, wherein the motor assembly is located above the cyclone separation assembly, the axis of the motor assembly is arranged horizontally, and the axis of the cyclone separation assembly is arranged vertically.
The handheld cleaning device according to any one of claims 1 to 3, wherein the first-stage cyclone unit has a first outlet communicating with the fluid channel, and the fluid channel is provided with a A first wind guide structure corresponding to the first outlet, the first wind guide structure includes at least one of an arc surface and a conical surface.
The handheld cleaning device according to claim 4, wherein the first outlet is disposed toward the outer wall of the motor assembly, and the outer wall of the motor assembly is curved at least at a portion facing the first-stage cyclone unit The arc-shaped wall is formed as the first wind guide structure.
The hand-held cleaning device according to any one of claims 1 to 5, wherein the second-stage cyclone unit has a second outlet communicating with the motor assembly, the motor assembly and the second A second air guide structure corresponding to the second outlet is provided between the stage cyclone separation units, and the second air guide structure includes at least one of an arc surface and a conical surface.
The hand-held cleaning device according to claim 6, characterized in that a filter cotton facing the second-level cyclone unit is provided between the motor assembly and the second-level cyclone separation unit, the second The outlet is disposed toward the outer wall of the filter cotton, and the outer wall of the filter cotton has an arc-shaped surface at least at a portion facing the second-stage cyclone unit, and the arc-shaped surface is the second wind guide structure.
The hand-held cleaning device according to any one of claims 1-7, wherein the first-stage cyclone unit includes a first cyclone separator, the first cyclone separator is formed as a cylinder, the The upper part of the first cyclone separator is formed as a first outlet communicating with the fluid channel, and the lower part of the first cyclone separator is provided with a cyclone dust-pressing device that prevents the secondary swirling of dust.
The hand-held cleaning device according to claim 8, characterized in that the cyclone ashing device comprises:

A connecting portion, the connecting portion extends into the first-level cyclone unit;

The ash pressing part is located below the connecting part, and the size of the ash pressing part is larger than the size of the first cyclone separator in the radial direction of the first cyclone separator.
The hand-held cleaning device according to claim 9, wherein a plurality of dust-falling holes are provided on the soot pressing portion, and the plurality of dust-falling holes are distributed around the interval of the first cyclone separator.
The hand-held cleaning device according to any one of claims 1-10, wherein the second-stage cyclone unit includes at least one second cyclone separator, when there are multiple second cyclones, A plurality of the second cyclones are arranged in parallel, and a plurality of the second cyclones are located at the rear side of the first-stage cyclone unit.
The hand-held cleaning device according to claim 11, wherein each of the second cyclone separators is formed as a cyclone cone, and a plurality of the cyclone cones are arranged in a straight line or an arc shape.
The handheld cleaning device according to any one of claims 1-12, wherein an air inlet pipe is connected to the air inlet, and the axis direction of the air inlet pipe is parallel to the axis direction of the motor assembly or vertical.