CN213488590U

CN213488590U - Handheld dust collector

Info

Publication number: CN213488590U
Application number: CN202021822808.5U
Authority: CN
Inventors: 尹伯翔; 周航标; 窦红润
Original assignee: Zhuichuang Technology Suzhou Co Ltd
Current assignee: Dreame Innovation Technology Suzhou Co Ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2021-06-22
Anticipated expiration: 2030-08-27

Abstract

The application discloses handheld dust catcher includes: the shell comprises an upper shell and a lower shell, a storage bin for containing chippings is formed in the lower shell, and a dust collection inlet for air to enter the storage bin is formed in the bottom of the lower shell; the upper shell is covered on the base, and the power assembly is positioned in an accommodating space defined by the upper shell and the base; the base is still including the opening that is used for intercommunication storage storehouse and accommodation space, goes up the casing and offers intercommunication accommodation space and external air outlet, and power component sets up on the air current circulation route between opening and air outlet, and the air current flows into storage storehouse from the dust absorption entry, and through opening entering accommodation space, power component flows through, finally outwards flows out from the air outlet. The application provides a handheld dust catcher, power component utilize the suction air current heat dissipation, and the radiating effect is good.

Description

Handheld dust collector

Technical Field

The application relates to the technical field of dust collectors, in particular to a handheld dust collector.

Background

In families and working lives, dust and debris cannot be prevented from accumulating on a table top or other table tops, and the table top dust collector needs to be cleaned at any time, so that the table top dust collector is widely required and applied.

Traditional desktop dust catcher, including the last casing of mutual lock and lower casing, lower housing setting storage bin and dust absorption entry, the air outlet generally sets up in last casing and casing lock position department down, and drive assembly lobe setting alone relies on drive assembly nature heat dissipation completely, and the radiating effect is relatively poor, and long-time heat accumulation leads to life to reduce easily.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the technology, the application provides the handheld dust collector with the heat dissipation driving assembly.

In order to solve the technical problem, the technical scheme adopted by the application is as follows:

a hand-held vacuum cleaner comprising:

the device comprises a shell, a dust collecting device and a dust collecting device, wherein the shell comprises an upper shell and a lower shell detachably connected with the upper shell, a storage bin for containing chippings is formed in the lower shell, and a dust collecting inlet for allowing air flow to enter the storage bin is formed in the bottom of the lower shell;

the storage bin is surrounded by the lower end face of the base and the lower shell together, the upper shell is covered on the base, and the power assembly is positioned in an accommodating space surrounded by the upper shell and the base;

the base is characterized by further comprising an opening used for communicating the storage bin with the accommodating space, the upper shell is provided with an air outlet communicated with the accommodating space and the outside, the power assembly is arranged on an air flow circulation path between the opening and the air outlet, air flows into the storage bin from the dust suction inlet, enters the accommodating space through the opening, flows through the power assembly and finally flows out from the air outlet.

In a preferred embodiment, the base includes a support plate for supporting the power assembly, the power assembly is supported above the support plate, the impeller is disposed below the support plate, and a gap for air flow is formed between the support plate and the side wall of the upper housing.

In a preferred embodiment, the base further includes a wind guiding ring connected below the supporting plate, and the wind guiding ring has a wind guiding inclined surface disposed obliquely, and is used for guiding the airflow thrown radially outward by the impeller to the upper side of the gap so as to flow to the power assembly side.

In one preferred embodiment, the air guiding slope is substantially in the shape of a curved surface of an inverted circular truncated cone.

In a preferred embodiment, the base further includes an air deflector disposed below the impeller, and the opening is opened in a middle portion of the air deflector and is located substantially directly below the impeller.

In one of preferred embodiment, the air inlet direction of the opening and the rotation axis of the impeller form an included angle, and the projection of the opening on the rotation plane of the impeller is located outside the range of the projection of the dust suction inlet on the rotation plane, so that the scraps entrained in the airflow can fall into the storage bin conveniently.

In a preferred embodiment, the dust collector further comprises a filter element disposed at the opening, and the filter element covers the opening and is used for filtering air flowing in from the dust inlet to filter out dirt.

In one preferred embodiment, the middle of the air deflector is recessed downwards to form a mounting groove for mounting the filter element, and the circumferential direction of the mounting groove is hollowed out to form the opening for air to flow into.

In a preferred embodiment, a baffle is arranged at the bottom of the mounting groove, and the projection of the baffle on the rotation plane of the impeller covers the projection of the dust suction inlet on the rotation plane.

In one preferred embodiment, the air outlet is formed in a top wall of the upper housing, the housing further includes a top cover disposed on the top of the upper housing, and an air outlet gap inclined upward is formed between the top cover and the top wall of the upper housing.

Compared with the prior art, the application has the beneficial effects that: the application provides a handheld dust catcher through opening the air outlet on last casing, sets up the opening that supplies the air current circulation on the base for the air current flows through power component, can improve the radiating effect for power component heat dissipation, prolongs power component's life

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:

FIG. 1 is a perspective view of a hand-held vacuum cleaner according to the present application;

FIG. 2 is a cross-sectional view of the hand-held cleaner shown in FIG. 1;

FIG. 3 is an exploded view of the hand-held cleaner of FIG. 1;

fig. 4 is a perspective view of the top cover of the hand-held cleaner of fig. 1.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "comprising" and "having," as well as any variations thereof, in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

A hand-held cleaner as shown in figures 1 to 3 comprises a housing, a base, a power assembly and an impeller 60.

The shell is used for accommodating the power assembly. The housing includes an upper housing 12 and a lower housing 11, a storage bin 111 for containing chips is formed in the lower housing 11, and a dust suction inlet 110 for air to flow into the storage bin 110 is formed at the bottom of the storage bin. The lower housing 11 is detachably connected to the upper housing 12 so that the lower housing 11 is detached to clean debris contained in the storage bin 111. It will be appreciated that the lower housing 11 and the upper housing 12 are not limited to a direct detachable connection, but that there may also be an intermediate element.

The base 30 is used to support the power assembly. Specifically, the power assembly is supported on the base 30, the lower end surface of the base 30 and the lower housing 11 together enclose a storage bin 111, the upper housing 12 covers the base 30, and the power assembly is disposed in the accommodating space enclosed by the upper housing 12 and the base 30. Referring to fig. 2, the base 30 is used as a boundary, the upper portion of the base 30 is an accommodating space for accommodating the power assembly, and the lower portion is a storage bin 111 for storing chips. The expressions "upper" and "lower" are used herein for illustrative purposes only and should not be construed as limiting the present application.

Wherein the power assembly is in driving connection with the impeller 60 for driving the impeller 60 to rotate to form a suction airflow.

Further, the upper housing 12 is provided with an air outlet 1210 communicating the accommodating space with the outside, the base 30 is provided with an opening 310 for communicating the storage bin 111 with the accommodating space, and the power assembly is disposed on an airflow path between the opening 310 and the air outlet 1210. Referring to the airflow flowing direction shown by the arrow in fig. 2, during the operation of the handheld vacuum cleaner 100, the impeller 60 is driven to rotate, and since the accommodating space and the storage bin 111 are communicated with each other through the opening 310 formed in the base 30, the impeller 60 rotates to form a negative pressure, and the airflow flows into the storage bin 111 from the dust suction inlet 110 below, enters the accommodating space through the opening 310, flows through the power assembly, and finally flows out from the air outlet 1210.

The application provides a handheld dust catcher, power component set up on the air current circulation route, can utilize the rotatory suction air flow that produces of impeller to dispel the heat, improve power component's radiating effect, can prolong power component's life.

Further, the power assembly includes a drive motor 20, and the drive motor 20 drives the impeller 60 to rotate, thereby generating a suction airflow. The impeller 60 is embodied as a centrifugal impeller.

The power assembly also includes a battery 50 for powering the drive motor 20. The handheld vacuum cleaner 100 is powered by a battery, which ensures portability and flexibility of the handheld vacuum cleaner. Specifically, the battery may be a lithium battery, a nickel-chromium battery. Preferably a lithium battery.

Referring to fig. 2, the base 30 includes a support plate 32 for supporting the power assembly, the power assembly being supported above the support plate 32, and an impeller 60 being disposed below the support plate 32. In order to facilitate the air flow to the power unit side, a gap for the air flow to flow is provided between the support plate 32 and the side wall 120 of the upper case 12, and the air flow is thrown out by the impeller 60 and then flows upward from the gap between the support plate 32 and the side wall 120 to flow to the power unit side. Specifically, the support plate 32 is substantially circular, the side wall 120 is cylindrical with an inner diameter larger than that of the support plate 32, an annular gap is formed between the support plate 32 and the side wall 120, and the airflow is thrown out in the radial direction of the impeller 60 and flows upward through the annular gap.

In order to further improve the circulation efficiency of the air flow, reduce the air flow loss and ensure the heat dissipation effect. The base 30 further includes a wind guide ring 312 connected below the support plate 32 for guiding the air flow thrown outward by the impeller 60 toward the upper side of the gap. Specifically, the air guide ring 312 has an inclined air guide slope, the outer contour of the air guide ring 312 is substantially in the shape of an inverted circular truncated cone, and the air guide slope is substantially in the shape of a curved surface of the inverted circular truncated cone, so that the air flow is guided upward.

When the hand-held cleaner is in operation, the impeller 60 rotates to form a suction airflow which flows in from the suction inlet 110 and the opening 310 in sequence, and it can be understood that the open positions of the opening 310 and the suction inlet 110 determine an air inlet path of the airflow, and further determine air inlet efficiency. In the present embodiment, the opening 310 is opened just below the impeller 60 in order to ensure the air intake efficiency. Specifically, the base 30 further includes an air deflector 31 disposed below the impeller 60, and the opening 310 is opened in the middle of the air deflector 31 and is located substantially right below the impeller 60. Further, the suction inlet 110 is also located directly below the impeller 60, and preferably, the suction inlet 110 substantially coincides with the center of the impeller 60. In this way, the airflow passage in the intake path is concentrated near the rotation axis of the impeller, and the airflow loss is small.

To assist in positioning the power assembly, the hand-held cleaner 100 also includes a positioning plate 40 disposed above the power assembly. Specifically, the positioning plate 40 includes a limiting groove for limiting the swing of the driving motor 20, and the limiting groove covers the driving motor 20 and can limit the driving motor 20. The positioning plate 40 has a gap in the circumferential direction from the upper case 12 for the circulation of the air flow.

In this embodiment, the air inlet direction of the opening 310 is arranged at an angle to the axis of rotation of the impeller 60, so as to change the direction of the airflow, thereby facilitating separation of dirt entrained in the airflow from the airflow. Further, the projection of the opening 310 onto the plane of rotation of the impeller 60 is outside the projection of the suction inlet 110 onto the plane of rotation, so that dirt entrained in the airflow, after entering the suction inlet 110, will float to a position obliquely above the suction inlet 110 as the airflow moves towards the opening 310, and will fall under gravity to the storage bin, rather than falling directly above the suction inlet 110.

It can be understood that the dust and debris are carried by the airflow flowing in from the dust suction inlet 110, wherein the debris with smaller particles must cause the pollution of the power assembly if entering the accommodating space along with the airflow, and meanwhile, the debris can be discharged to the outside from the air outlet, so that the ambient air environment is polluted, and the user experience is reduced. In order to prevent dirt entrained in the airflow from entering the accommodating space and polluting the power module and the outside air, a filter 70 is disposed at the opening 310 to block the opening 310 and filter the dirt in the airflow flowing in from the dust inlet 110. Wherein, the filtering member 70 may be a sponge, a filter cotton, a filter net, etc.

Specifically, the air guiding plate 31 is recessed downward at the middle portion to form a mounting groove for mounting the filtering element 70, and the circumferential direction of the mounting groove is hollowed out to form the opening 310 for air to flow into. The bottom of mounting groove sets up the baffle, can block that elongated object stretches into and touches impeller 60, causes the harm to impeller 60, and on the other hand also can prevent that the finger from stretching into, avoids the impeller of high-speed rotation to cut the finger, causes the injury. Preferably, the projection of the baffle onto the plane of rotation of the impeller 60 covers the suction inlet 110.

After handheld dust catcher used a certain period, filtered 70 filter effect worsened, for the convenience of changing filtered piece, aviation baffle 31 and backup pad 32 detachable are connected, when needing to change filtered piece 70, dismantle casing 11 down, dismantle backup pad 32 and aviation baffle 31, after having changed filtered piece, again pack back in proper order.

The handheld dust collector provided by the embodiment is used for absorbing dust, debris and the like on a table top, is small and portable, and therefore can be called as a table top dust collector. In one specific application scenario, the eraser is used for absorbing eraser scraps, pencil scraps and the like, and therefore, the eraser can also be used as stationery.

When the handheld dust collector is used for cleaning a table top or other table surfaces, air flow blown out from the air outlet of the handheld dust collector is difficult to avoid acting on articles placed on the table top or the table surfaces, and if the articles are light in weight, the documents are easy to blow away due to too large air flow. Therefore, it is necessary to design the outlet structure of the handheld vacuum cleaner to solve the above problems.

In this embodiment, the air outlet 1210 is disposed on the top wall 121 of the upper housing 12, the housing further includes a top cover 14 disposed on the top of the upper housing 12, the top cover 14 covers the air outlet 1210, and an inclined upward air outlet gap is formed between the top cover 14 and the top wall 121 of the upper housing 12. The top wall 121 of the upper housing 12 may be provided separately from the side wall 120, or may be integrally formed, which is not limited herein.

The air outlet gap is obliquely and upwards arranged, so that the air flow blown out from the air outlet 1210 can be guided to be obliquely and upwards blown out, on one hand, the risk that the blown air flow blows away the files on the cleaning surface can be reduced, on the other hand, the air flow is blown out not directly above, the formation of concentrated air flow directly above is avoided, the strength of the air flow felt by the hand or arm of a user is weak when the hand or arm of the user is above the handheld dust collector, and the user experience is good.

Further, the top wall 121 is in a bowl shape gradually recessed from the edge to the middle, and the air outlet 1210 is disposed at the bottom of the bowl-shaped top wall 121. Specifically, the outer contour of the top wall 121 is circular, the circumferential edge thereof is fixedly connected with the side wall 120, the middle portion is recessed into the accommodating space, and the air outlet 1210 is opened at the bottom of the recess. Since the air flow is from bottom to top, the air flow flows upwards from the bottom of the bowl-shaped top wall 121, and has a tendency to incline upwards under the guiding action of the top wall 121.

For more even air-out, weakening air-out air current intensity, the air-out clearance is roughly annular, and the air current flows from the bottom of roof 121 upwards, and the circulation cross sectional area in air-out clearance increases gradually, and like this, the air-out speed is showing and is reducing, and the air current intensity that can feel weakens. Specifically, the top cover includes a covering portion 142 covering the air outlet 1210, a middle portion of the covering portion 142 is supported and connected to the top wall 120, and the covering portion 142 is spaced from the top wall 121 in the circumferential direction to form a substantially annular air outlet gap.

Annular air-out clearance blows off the air current dispersion from circumference, has weakened the speed that the air current blew off, has reduced the air current to placing the influence of other article on cleaning surface, has also weakened the user to the impression of air-out air current, promotes user experience.

Specifically, referring to fig. 3 and 4, the top cover 14 includes a supporting portion 141 for connecting with the top wall 121, and the supporting portion 141 is connected to a substantially middle position of the covering portion 142 of the top cover 14. The top wall 121 is provided with a mounting seat 1211 for mounting the supporting portion 141, and the mounting seat 1211 is disposed in the middle of the top wall 121. The supporting portion 141 is connected to the mounting seat 1211, the top cover 14 is supported above the top wall 121, and an annular air outlet gap is formed between the lower end surface of the top cover 14 and the upper end surface of the top wall 121. More specifically, the cover portion 142 is substantially circular, and the outer contour of the top wall 121 is also circular in conformity with the cover portion 142, defining an annular airflow communication gap therebetween.

Preferably, the air outlets 1210 are multiple and arranged at the bottom of the top wall 121 in a substantially circumferential arrangement, so that the air is discharged more uniformly in the circumferential direction. More preferably, the air outlets 1211 are evenly spaced around the mount 1211 at the bottom of the top wall 121, i.e., the mount 1211 is located at a middle position of the air outlet 1210.

When the airflow circulation path is not smooth or other faults cause the handheld dust collector to be in an abnormal working state, the handheld dust collector is reminded of a user whether the handheld dust collector works normally or not in real time. In one embodiment, an impeller 143 is also provided to visually reflect the flow rate of the exhaust. Specifically, impeller 143 sets up in air outlet 1210 department, is formed on top cap 14, and top cap 14 and roof 121 are rotatable to be connected, and impeller 143 sets up space and accommodation space intercommunication, and the air current that so is convenient for to flow acts on impeller 143, and drive impeller 143 rotates to drive top cap 14 and rotate, thereby the user can audio-visually observe top cap 14's slew velocity, thereby judge whether the air output is in normal range. Specifically, if the top cover 14 does not rotate or the rotation speed is low during the operation, it is determined that the airflow path is blocked or abnormal due to other faults, and the operation is stopped in time for maintenance.

To sum up, the handheld dust catcher that this application provided is through changing the air current circulation route for the air current flows through power component, can improve the radiating effect for power component heat dissipation, prolongs power component's life.

The above description is only for the purpose of illustrating embodiments of the present invention and is not intended to limit the scope of the present invention, and all modifications, equivalents, and equivalent structures or equivalent processes that can be used directly or indirectly in other related fields of technology shall be encompassed by the present invention.

Claims

1. A hand-held cleaner, comprising:

2. The hand-held cleaner of claim 1, wherein the base includes a support plate for supporting the power assembly, the support plate supporting the power assembly above and the impeller below, the support plate and the sidewall of the upper housing having a gap therebetween through which air flows.

3. The hand-held cleaner according to claim 2, wherein the base further comprises a wind guide ring connected below the support plate, the wind guide ring having a wind guide slope obliquely arranged to guide the airflow thrown radially outward by the impeller to the upper side of the gap to flow toward the power unit side.

4. The hand-held cleaner of claim 3, wherein the air-guiding ramp is substantially in the shape of an inverted truncated cone.

5. The hand-held cleaner of claim 1, wherein the base further comprises a deflector disposed below the impeller, and the opening opens at a middle portion of the deflector substantially directly below the impeller.

6. The hand-held cleaner of claim 5, wherein the air inlet direction of the opening is disposed at an angle to the rotation axis of the impeller, and the projection of the opening onto the rotation plane of the impeller is located outside the projection of the dust suction inlet onto the rotation plane, so as to facilitate the falling of the debris entrained in the air flow into the storage bin.

7. The hand-held cleaner of claim 5, further comprising a filter element disposed at the opening, the filter element covering the opening for filtering air flowing in from the dust inlet to remove dirt.

8. The hand-held vacuum cleaner of claim 7, wherein the air deflector is recessed at a middle portion thereof to form a mounting groove for mounting the filter element, and the mounting groove is hollowed out in a circumferential direction to form the opening for air to flow into.

9. The handheld vacuum cleaner of claim 8, wherein a baffle is disposed at a bottom of the mounting groove, and a projection of the baffle on a rotation plane of the impeller covers a projection of the dust suction inlet on the rotation plane.

10. The handheld vacuum cleaner of claim 1, wherein the air outlet is formed in a top wall of the upper housing, the housing further comprises a top cover disposed on a top of the upper housing, and an air outlet gap is formed between the top cover and the top wall of the upper housing and is inclined upward.