WO2022011909A1

WO2022011909A1 - Flow guide device of dust collector, and dust collector

Info

Publication number: WO2022011909A1
Application number: PCT/CN2020/129857
Authority: WO
Inventors: 邹晨海; 胡斯特; 黄建明; 李冰; 李书奇
Original assignee: 广东美的白色家电技术创新中心有限公司; 美的集团股份有限公司
Priority date: 2020-07-17
Filing date: 2020-11-18
Publication date: 2022-01-20
Also published as: CN113944655B; CN113944655A

Abstract

A flow guide device of a dust collector. The flow guide device (10) is arranged upstream of a fan (20). The flow guide device (10) comprises a flow guide member (100), wherein the flow guide member (100) comprises a fixed shaft (110) and a plurality of guide blades (120); the plurality of guide blades (120) are arranged on the fixed shaft (110) at intervals in the circumferential direction of the fixed shaft (110), and extend towards the outside of the fixed shaft (110); each of the guide blades (120) comprises a first air guide face (121) and a second air guide face (122) which are oppositely provided in the circumferential direction of the fixed shaft (110); and on a cross section parallel to the axial direction of the fixed shaft (110), a tangent line of the first air guide face (121) and/or the second air guide face (122) forms a first included angle with the axial direction of the fixed shaft (110), with the first included angle gradually increasing in a direction approaching the fan (20). A dust collector, comprising the flow guide device (10). The flow guide device can change the velocity and flow rate of an airflow at an air inlet of the fan, such that the working efficiency point of the fan matches the working efficiency point of the whole machine, and the actual suction power of the dust collector is higher during a use process.

Description

A kind of guide device of vacuum cleaner and vacuum cleaner

This application claims the priority of the Chinese patent application with the application number 2020106941108 filed on July 17, 2020, and the invention title is "A deflector for a vacuum cleaner and a vacuum cleaner", which is fully incorporated into this application by reference.

【Technical field】

The invention relates to the technical field of household appliances, in particular to a flow guiding device of a vacuum cleaner and a vacuum cleaner.

【Background technique】

In the vacuum cleaner, negative air pressure is generally generated in the sealed casing through the high rotation of the fan, so that dust and other sundries are sucked into the casing to achieve the cleaning function. The efficiency and convenience of its cleaning work can bring great convenience to the life of home users.

The inventor of the present application has found in the long-term research and development that the working efficiency point of the current vacuum cleaner fan does not match the working efficiency point of the whole machine, and the performance of the fan cannot be fully exerted, resulting in the user's actual suction power of the vacuum cleaner during use. low, thus affecting the cleaning effect of the vacuum cleaner.

[Content of the invention]

The present invention provides a guide device for a vacuum cleaner and a vacuum cleaner, so as to solve the technical problem that the working efficiency point of the fan of the vacuum cleaner does not match the working efficiency point of the whole machine in the prior art.

In order to solve the above technical problems, a technical solution adopted by the present invention is to provide a flow guide device for a vacuum cleaner, the vacuum cleaner includes a fan, the flow guide device is arranged upstream of the fan, and the flow guide device includes a flow guide parts, the guide parts include:

fixed shaft;

a plurality of guide vanes, the plurality of guide vanes are arranged on the fixed shaft at intervals along the circumferential direction of the fixed shaft, and extend to the outside of the fixed shaft;

Wherein, the guide vane includes a first wind guide surface and a second wind guide surface oppositely arranged along the circumferential direction of the fixed shaft, and on a reference section parallel to the axial direction of the fixed shaft, the first guide A first included angle is formed between the wind surface and/or the tangent of the second wind guide surface and the axial direction of the fixed shaft, and the first included angle gradually increases in the direction close to the fan.

In a specific embodiment, the first air guide surface and the second air guide surface respectively include an air inlet end facing away from the fan and an air outlet end close to the fan, and the tangential line of the air inlet end is The first included angle with the axial direction of the fixed shaft is less than or equal to 5°, and the first included angle between the tangent of the air outlet end and the axial direction of the fixed shaft is 20° ° to 40°.

In a specific embodiment, the guide vane further includes a first end surface for connecting the air inlet ends of the first wind guide surface and the second wind guide surface, and a first end surface for connecting the first wind guide surface. surface and the second end surface of the air outlet end of the second air guide surface, the first end surface and the second end surface are arranged in an arc shape, and the curvature of the first end surface and the second end surface The radius is smaller than the radius of curvature of the first wind guide surface and the second wind guide surface.

In a specific embodiment, the flow guide device includes a flow guide pipe, the flow guide pipe includes a first pipe section and a second pipe section, the first pipe section is a straight pipe and is disposed close to the fan, and the first pipe section is a straight pipe. The second pipe section is an arc-shaped pipe and is disposed away from the fan. The air guide is disposed in the first pipe section, and the second pipe section is between the axial direction of the fixed shaft and the axial direction of the first pipe section. The included angle is less than 5°.

In a specific embodiment, the inner wall of the first pipe section is provided with a card slot, and the opening of the card slot is away from the second pipe section, so that the air inlet end can be inserted into the card slot from the opening, The third included angle between the extending direction of the snap groove and the axial direction of the first pipe section is equal to the first included angle between the tangent of the air inlet end and the axial direction of the fixed shaft.

In a specific embodiment, the inner wall of the first pipe section is provided with a card slot, and the opening of the card slot faces the second pipe section, so that the air outlet end can be inserted into the card slot from the opening, The third included angle between the extending direction of the clamping groove and the axial direction of the first pipe section is equal to the first included angle between the tangent of the air outlet end and the axial direction of the fixed shaft.

In a specific embodiment, the first pipe segment is provided with a first connection portion, the second pipe segment is provided with a second connection portion, and the first connection portion and the second connection portion are respectively a flat sawtooth structure, The first connection part and the second connection part are engaged with each other to realize the connection of the first pipe section and the second pipe section.

In a specific embodiment, the flow guiding device includes a grille, the grille is arranged upstream of the fan, the grille is formed with an accommodating groove, and the flow guiding member is arranged in the accommodating groove Inside.

In a specific embodiment, the thickness of the guide vanes along the circumferential direction of the fixed shaft is 1 mm to 3 mm, and the number of the guide vanes is 3 to 8 pieces.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a vacuum cleaner, a fan and the above-mentioned flow guide device, wherein the flow guide device is arranged upstream of the fan for suctioning the fan air diversion.

In the present invention, a flow guide device is arranged upstream of the fan of the vacuum cleaner, and the flow guide device includes a fixed shaft and a plurality of guide vanes arranged at intervals along the circumferential direction of the fixed shaft and extending to the outside of the fixed shaft. The first included angle formed between the tangent of the first wind guide surface and/or the second wind guide surface arranged opposite to the circumferential direction of the fixed shaft and the circumferential direction of the fixed shaft gradually increases in the direction close to the fan, which can change the air intake of the fan. The speed and flow of the airflow at the tuyere match the working efficiency of the fan with the working efficiency of the whole machine, so that the performance of the fan can be better played, the actual suction power of the vacuum cleaner during use is higher, and the cleaning effect of the vacuum cleaner is better. good.

【Description of drawings】

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, under the premise of no creative work, other drawings can also be obtained from these drawings, wherein:

1 is a schematic structural diagram of a vacuum cleaner in an embodiment of a flow guiding device for a vacuum cleaner of the present invention;

FIG. 2 is a schematic three-dimensional structure diagram of an embodiment of a flow guiding device of a vacuum cleaner according to the present invention;

3 is a schematic three-dimensional structure diagram of an embodiment of the flow guiding device of the vacuum cleaner of the present invention;

4 is a schematic three-dimensional structure diagram of a flow guide in an embodiment of the flow guide device of the vacuum cleaner of the present invention;

5 is a schematic front view of the structure of a flow guide in an embodiment of the flow guide device of the vacuum cleaner of the present invention;

6 is a schematic diagram of the functional relationship between the absorbed power of the fan and the whole machine and the flow rate of the airflow in an embodiment of the air guide device of the vacuum cleaner of the present invention;

Fig. 7 is a simulation schematic diagram of the vacuuming effect in an embodiment of the flow guiding device of the vacuum cleaner of the present invention;

8 is a schematic structural diagram of the first pipe section of the guide pipe in an embodiment of the guide device of the vacuum cleaner of the present invention;

9 is a schematic structural diagram of the first pipe section of the guide pipe in another embodiment of the guide device of the vacuum cleaner of the present invention;

10 is a schematic front view of the structure of the first pipe section of the guide pipe in an embodiment of the guide device of the vacuum cleaner of the present invention;

11 is a schematic top view of the structure of the first pipe section of the guide pipe in an embodiment of the guide device of the vacuum cleaner of the present invention;

12 is a schematic front view of the structure of the second pipe section of the guide pipe in an embodiment of the guide device of the vacuum cleaner of the present invention;

13 is a schematic top view of the structure of the second pipe section of the guide pipe in an embodiment of the guide device of the vacuum cleaner of the present invention;

14 is a schematic three-dimensional structural diagram of a grille in another embodiment of the air guide device of the vacuum cleaner of the present invention.

【detailed description】

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The terms "first" and "second" in this application are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined. Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices. The term "and/or" is only an association relationship to describe the associated objects, which means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone these three situations. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

Referring to FIGS. 1 to 5 , in an embodiment of the air guide device 10 for a vacuum cleaner of the present invention, the vacuum cleaner includes a fan 20 , the air guide device 10 is disposed upstream of the fan 20 , and the air guide device 10 includes a air guide member 100 , and the air guide member 100 It includes a fixed shaft 110 and a plurality of guide vanes 120. The plurality of guide vanes 120 are arranged on the fixed shaft 110 at intervals along the circumferential direction of the fixed shaft 110 and extend to the outside of the fixed shaft 110; The circumferentially oppositely arranged first wind guide surface 121 and second wind guide surface 122, on the reference section parallel to the axial direction of the fixed shaft 110, the first wind guide surface 121 and/or the second wind guide surface 122 A first included angle is formed between the tangent line and the axial direction of the fixed shaft 110 , and the first included angle gradually increases in the direction close to the fan 20 .

In the embodiment of the present invention, a flow guide device 10 is provided upstream of the fan 20 of the vacuum cleaner. The flow guide device 10 includes a fixed shaft 110 and a plurality of guide vanes arranged at intervals along the circumferential direction of the fixed shaft 110 and extending to the outside of the fixed shaft 110 120, by arranging the guide vanes 120 so that the first angle formed between the tangent of the first wind guide surface 121 and/or the second wind guide surface 122 oppositely arranged along the circumferential direction of the fixed shaft 110 and the circumferential direction of the fixed shaft 110 is It gradually increases in the direction close to the fan 20, which can change the speed and flow of the airflow at the air inlet of the fan 20, so that the working efficiency of the fan 20 matches the working efficiency of the whole machine, so that the performance of the fan 20 can be better played. , the actual suction power of the vacuum cleaner during use is higher, and the cleaning effect of the vacuum cleaner is better.

Referring to FIGS. 1 to 3 , in this embodiment, the air guide device 10 includes a guide tube 200 , and the guide member 100 is arranged in the guide tube 200 , wherein the guide tube 200 can also serve to connect the fan 20 and the vacuum cleaner. The function of the filter device 30 is not limited, and the diversion device 10 can also prevent the user from directly contacting the fan 20 during the process of disassembling and assembling the filter device 30, thereby avoiding mechanical damage to the user.

In this embodiment, the thickness of the guide vane 120 along the circumferential direction of the fixed shaft 110 is 1 mm to 3 mm, for example, 1 mm, 2 mm, or 3 mm.

In an embodiment, the number of guide vanes is 3 to 8, for example, 3, 5, or 8.

Referring to FIGS. 4 to 6 together, in this embodiment, the first wind guide surface 121 and the second wind guide surface 122 respectively include an air inlet end (not marked in the figure) facing away from the fan 20 and an outlet close to the fan 20 . At the wind end (not shown in the figure), the first included angle θ1 between the tangent of the air inlet end and the axial direction of the fixed shaft 110 is less than or equal to 5°, such as 5°, 2° or 0°, etc. The tangent of the air outlet end The first included angle θ2 with the axial direction of the fixed shaft 110 is 20° to 40°, such as 20°, 30° or 40°, etc. By arranging the air outlet end with an axial offset relative to the fixed shaft 110, it is compatible with the fan. The cooperation of the fan blades 20 can make the airflow entering the fan 20 generate negative pre-swirl, so that the high-efficiency point of the suction power P1 of the fan 20 can be shifted to match the suction power P2 of the whole machine.

In this embodiment, the guide vane 120 further includes a first end surface 123 for connecting the air inlet ends of the first wind guide surface 121 and the second wind guide surface 122 and a first end surface 123 for connecting the first wind guide surface 121 and the second wind guide surface The second end face 124 of the air outlet end of the face 122, the first end face 123 and the second end face 124 are all arranged in an arc shape, and the curvature radius of the first end face 123 and the second end face 124 is smaller than that of the first wind guide face 121 and the second guide face 121. By setting the first end surface 123 and the second end surface 124 to be arc-shaped, the radius of curvature of the wind surface 122 can reduce the resistance to the airflow passing through the guide vane 120 and better divide or merge. In other embodiments, the first end surface 123 and the second end surface 124 may also be flat surfaces, which are not limited herein.

Table 1

Referring to FIG. 7 together with Table 1 above, the vacuum cleaner provided with the flow guide device 10 in the present application has an increase of more than 8W in absorbing power compared to the vacuum cleaner without the flow guide device, which is a significant improvement.

In this embodiment, the diversion pipe 200 includes a first pipe section 210 and a second pipe section 220. The first pipe section 210 is a straight pipe and is disposed close to the fan 20, and the second pipe section 220 is an arc-shaped pipe and is disposed away from the fan 20. The flow guide 100 is disposed in the first pipe section 210, and the second included angle between the axial direction of the fixed shaft 110 and the axial direction of the first pipe section 210 is less than 5°, such as 5°, 2° or 0°, etc., so as to The airflow can smoothly flow into the guide tube 200 along the axial direction of the fixed shaft 110 .

Referring to FIG. 8 together, in this embodiment, the inner wall of the first pipe section 210 is provided with a card slot 211, and the opening of the card slot 211 faces away from the second pipe section 220, so that the air inlet end of the guide vane 120 can be inserted into the card slot from the opening. 211. The connection between the guide vane 120 and the guide tube 200 is realized through the cooperation of the air inlet end and the card slot 211, so that the guide tube 200 can be adapted to the guide members 100 of different specifications, such as guides with different deflection angles of the air outlet end. The component 100 can be adapted to fans 20 of different specifications or different working conditions, and the versatility and practicability of the flow guiding device 10 can be improved.

In this embodiment, the third included angle between the extending direction of the clamping groove 211 and the axial direction of the first pipe section 210 is equal to the first included angle between the tangent of the air inlet end and the axial direction of the fixed shaft 110 , so that the guide The axial direction of the fixed shaft 110 of the flow member 100 can be consistent with the axial direction of the first pipe section 210 , so that the airflow can pass through the guide pipe 200 .

Referring to FIG. 9 , in another embodiment of the air guide device 10 of the vacuum cleaner of the present invention, the inner wall of the first pipe section 210 is provided with a card slot 212, and the opening of the card slot 212 faces the second pipe section 220, so that the outlet end can be inserted into the card through the opening. The grooves 212 can make the matching structure of the flow guide member 100 and the flow guide tube 200 more stable.

In this embodiment, the third included angle between the extending direction of the clamping groove 212 and the axial direction of the first pipe section 210 is equal to the first included angle between the tangent of the air outlet end and the axial direction of the fixed shaft 110 , so that the guide The axial direction of the fixed shaft 110 of the flow member 100 can be consistent with the axial direction of the first pipe section 210 , so that the airflow can pass through the guide pipe 200 .

10 to 13 , in this embodiment, the first pipe section 210 is provided with a first connection portion 213 , the second pipe section 220 is provided with a second connection portion 221 , the first connection portion 213 and the second connection portion 221 They are flat saw-tooth structures respectively, and the first connecting portion 213 and the second connecting portion 221 are engaged with each other to realize the connection of the first pipe section 210 and the second pipe section 220, which can improve the sealing performance of the guide tube 200, so that the overall The structure is more stable.

In other embodiments, the first pipe section 210 and the second pipe section 220 may also be connected by means of snapping or sticking, which is not limited herein.

1 and 14, in another embodiment of the air guide device 10 for a vacuum cleaner of the present invention, the vacuum cleaner includes a fan 20, the air guide device 10 includes a guide member 100 and a grill 300, and the grill 300 is arranged upstream of the fan 20, The grill 300 is formed with an accommodating groove 310 , and the air guide 100 is disposed in the accommodating groove 310 .

The specific structure of the air guide member 100 can be referred to the air guide member 100 in the above-mentioned embodiment of the air guide device 10 of the vacuum cleaner, which will not be repeated here.

Referring to FIG. 1 , the embodiment of the vacuum cleaner of the present invention includes a flow guiding device 10 and a fan 20 . The flow guiding device 10 is arranged upstream of the fan 20 and is used for guiding the air drawn by the fan 20 .

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other related technologies Fields are similarly included in the scope of patent protection of the present invention.

Claims

An air guide device for a vacuum cleaner, characterized in that the vacuum cleaner includes a fan, the air guide device is arranged upstream of the fan, the air guide device includes a guide element, and the air guide element includes:

fixed shaft;

a plurality of guide vanes, the plurality of guide vanes are arranged on the fixed shaft at intervals along the circumferential direction of the fixed shaft, and extend to the outside of the fixed shaft;

Wherein, the guide vane includes a first wind guide surface and a second wind guide surface oppositely arranged along the circumferential direction of the fixed shaft, and on a reference section parallel to the axial direction of the fixed shaft, the first guide A first included angle is formed between the wind surface and/or the tangent of the second wind guide surface and the axial direction of the fixed shaft, and the first included angle gradually increases in the direction close to the fan.
The air guiding device according to claim 1, wherein the first air guiding surface and the second air guiding surface respectively comprise an air inlet end facing away from the fan and an air outlet end close to the fan, The first included angle between the tangent line of the air inlet end and the axial direction of the fixed shaft is less than or equal to 5°, and the angle between the tangent line of the air outlet end and the axial direction of the fixed shaft is less than or equal to 5°. The first included angle is 20° to 40°.
The air guide device according to claim 2, wherein the guide vane further comprises a first end surface for connecting the air inlet ends of the first air guide surface and the second air guide surface, and a On the second end surface of the air outlet end connecting the first air guide surface and the second air guide surface, the first end surface and the second end surface are both arranged in an arc shape, and the first end surface and the radius of curvature of the second end surface is smaller than the radius of curvature of the first wind guide surface and the second wind guide surface.
The diversion device according to claim 2, wherein the diversion device comprises a diversion pipe, the diversion pipe comprises a first pipe section and a second pipe section, and the first pipe section is a straight pipe and is close to the The fan is arranged, the second pipe section is an arc-shaped pipe, and is arranged away from the fan, the flow guide is arranged in the first pipe section, and the axial direction of the fixed shaft is the same as that of the first pipe section. The second included angle between the axial directions is less than 5°.
The flow guiding device according to claim 4, wherein a clamping groove is provided on the inner wall of the first pipe section, and the opening of the clamping groove is away from the second pipe section, so that the air inlet end can pass from the The opening is inserted into the card slot, and the third included angle between the extension direction of the card slot and the axial direction of the first pipe section is equal to the distance between the tangent of the air inlet end and the axial direction of the fixed shaft of the first included angle.
The flow guiding device according to claim 4, wherein a clamping groove is provided on the inner wall of the first pipe section, and the opening of the clamping groove faces the second pipe section, so that the air outlet end can pass from the The opening is inserted into the card slot, and the third included angle between the extension direction of the card slot and the axial direction of the first pipe section is equal to the distance between the tangent of the air outlet end and the axial direction of the fixed shaft of the first included angle.
The flow guiding device according to claim 4, wherein the first pipe section is provided with a first connection part, the second pipe section is provided with a second connection part, and the first connection part and the second connection part are provided. The connecting parts are respectively in zigzag structures, and the first connecting part and the second connecting part are engaged with each other to realize the connection of the first pipe section and the second pipe section.
The air guide device according to claim 1, wherein the air guide device comprises a grille, the grille is arranged upstream of the fan, the grille is formed with an accommodating groove, and the flow guider The component is arranged in the accommodating groove.
The flow guide device according to claim 1, wherein the thickness of the guide vanes along the circumferential direction of the fixed shaft is 1 mm to 3 mm, and the number of the guide vanes is 3 to 8.
A vacuum cleaner, characterized in that a fan and the air guide device according to any one of claims 1 to 9, the air guide device is arranged upstream of the fan, and is used for the air suctioned by the fan diversion.