CN213176100U

CN213176100U - Preceding screen panel and circulation fan

Info

Publication number: CN213176100U
Application number: CN202020809354.1U
Authority: CN
Inventors: 陈小平; 林勇进; 唐清生
Original assignee: Yunmi Internet Technology Guangdong Co Ltd
Current assignee: Yunmi Internet Technology Guangdong Co Ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-05-11
Anticipated expiration: 2030-05-14

Abstract

The utility model discloses a preceding screen panel and circulation fan, wherein, preceding screen panel includes screen panel body and leg, and the screen panel body has air inlet side and air-out side, and the leg is located air-out side and encircles the edge of locating the screen panel body, and the profile that screen panel body one side was kept away from to the leg is wave circle form. The utility model discloses a preceding screen panel sets up the leg through the air-out side at the screen panel body to set wave circle form to through the profile of keeping away from screen panel body one side with the leg, the leg of wave circle form forms one section anomalous water conservancy diversion wall in the air-out side, can effectively delay the energy loss that the vortex air current goes on because of turbulent small scale structure, thereby noise abatement's production can make the air current field that the screen panel spreads out in the past even moreover, promotes user experience.

Description

Preceding screen panel and circulation fan

Technical Field

The utility model relates to a household electrical appliances field especially relates to a preceding screen panel and an adopt circulation fan of screen panel before this.

Background

The circulating fan is a device for generating air flow, and comprises a supporting rod, a chassis assembly and a machine head assembly, wherein the chassis assembly is installed at the bottom end of the supporting rod, the machine head assembly is installed at the top end of the supporting rod, the machine head assembly comprises a middle frame, a front mesh enclosure installed at the front end of the middle frame, a rear mesh enclosure installed at the rear end of the middle frame, fan blades arranged in the middle frame and a motor used for driving the fan blades to rotate, and when the motor drives the fan blades to rotate, air compressed by the fan blades generates air flow. The existing circulating fan has the defects that the vortex airflow generated by rotation of the fan blade is at the air outlet side of the front mesh enclosure, the energy loss is caused by the small-scale structure of the turbulent flow, the noise is generated, and the user experience is not good.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses a first aspect discloses a preceding screen panel, can effectively delay the energy loss that the vortex air current goes on because of the small-scale structure of torrent, noise abatement's production can make the air current flow field that the screen panel spreads out in the past even moreover, promotes user experience.

In order to achieve the above object, the utility model provides a following technical scheme:

a preceding screen panel for a circulation fan, preceding screen panel includes:

the screen comprises a screen body, a first screen body and a second screen body, wherein the screen body is provided with an air inlet side and an air outlet side;

the air outlet side of the air outlet is provided with an air outlet, the air outlet side of the air.

A second aspect of the present invention discloses a circulation fan, including:

a support mechanism;

the chassis mechanism is arranged at the bottom of the supporting mechanism;

the machine head mechanism is arranged at the top of the supporting mechanism and used for driving air to flow;

wherein, the aircraft nose mechanism includes:

a middle frame;

the front mesh enclosure is connected with the front end of the middle frame and adopts the front mesh enclosure;

the rear net cover is connected with the rear end of the middle frame;

and the wind dispelling mechanism is arranged in the middle frame and is used for driving air to flow.

According to the technical scheme, the utility model discloses a preceding screen panel sets up the leg through the air-out side at the screen panel body to set wave circle form through the profile of keeping away from screen panel body one side with the leg, wave circle form the leg form one section anomalous water conservancy diversion wall in the air-out side, can effectively delay the energy loss that the vortex air current goes on because of the small size structure of torrent, thereby noise abatement's production, and can make the air current field that the screen panel spreads out in the past even, promote user experience.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required 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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic front view of a front mesh enclosure according to an embodiment of the present invention;

fig. 2 is a schematic side view of a front mesh enclosure according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view B-B of FIG. 1;

fig. 4 is a schematic perspective view of a front mesh enclosure according to an embodiment of the present invention;

fig. 5 is a schematic rear view of a front mesh enclosure according to an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view C-C of FIG. 5;

fig. 7 is a schematic structural view of a first viewing angle of the middle frame, the front mesh enclosure, and the pressing ring according to an embodiment of the present invention;

FIG. 8 is an enlarged view of a portion of FIG. 7 at E;

fig. 9 is a schematic structural view of a second viewing angle of the middle frame, the front mesh enclosure, and the press ring according to an embodiment of the present invention;

FIG. 10 is an enlarged view of a portion of FIG. 9 at F;

fig. 11 is a partially enlarged view of fig. 9 at G.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Referring to fig. 1-3, an embodiment of the present invention discloses a circulation fan 100, which includes a supporting mechanism 10, a chassis mechanism 20 and a head mechanism 30, wherein the chassis mechanism 20 is installed at the bottom of the supporting mechanism 10, the head mechanism 30 is installed at the top of the supporting mechanism 10, the chassis mechanism 20 is used for the circulation fan 100 to be stably placed on the ground, and the head mechanism 30 is used for driving air to flow to form an air flow. Specifically, the head mechanism 30 includes a middle frame 31, a front mesh enclosure 32, a rear mesh enclosure 33, and a wind-driving mechanism 34, wherein the front mesh enclosure 32 is connected to a front end of the middle frame 31, the rear mesh enclosure 33 is connected to a rear end of the middle frame 31, and the wind-driving mechanism 34 is disposed in the middle frame 31 for driving air to flow.

Referring to fig. 4-6, in an alternative embodiment, the front mesh enclosure 32 includes a mesh enclosure body 321, the mesh enclosure body 321 has an air inlet side 32a and an air outlet side 32b, and the mesh enclosure body 321 is in an arch structure with a high middle and a low periphery from the air inlet side 32a to the air outlet side 32 b. The airflow generated by the wind-driving mechanism 34 passes through the mesh enclosure body 321 from the wind inlet side 32a, and then is diffused to the surrounding environment from the wind outlet side 32 b.

After adopting foretell technical scheme, through setting screen panel body 321 to the domes, can effectively delay the energy loss that the vortex air current that produces by wind-driving mechanism 34 goes on because of the small-scale structure of torrent to the production of noise abatement can make the air current flow field that spreads out from preceding screen panel 32 even moreover, promotes user experience.

In an optional embodiment, the mesh enclosure body 321 includes a first circular ring member 3211, a second circular ring member 3212, and a first rib 3213, the second circular ring member 3212 is disposed at an interval inside the first circular ring member 3211, and is disposed concentrically with the first circular ring member 3211, the first rib 3213 is connected between the first circular ring member 3211 and the second circular ring member 3212, wherein a distance from an air outlet side of the second circular ring member 3212 to an air outlet side of the first circular ring member 3211 is a, an inner diameter of the first circular ring member 3211 is D, and a is (0-0.15) D. In some preferred embodiments, a may be selected from 0.05D, 0.07D, 0.09D, 0.010D, 0.11D, 0.13D, 0.15D. By setting a to (0-0.15) D, the air-out effect of the circulation fan 100 can be improved.

In an alternative embodiment, the first ribs 3213 extend arcuately from an outer sidewall of the second ring 3212 to an inner sidewall of the first ring 3211. Through setting first rib 3213 to the arc, can reduce the air current from the guard 32 when going out the time preceding guard 32 the guard 32 to blockking that the air current formed, can understand ground, the fan blade of circulation fan also can drive the air current and form certain rotation when driving the air current from the guard 32 and going out, through setting first rib 3213 to the arc, can form with the pivoted air current and coincide, like this, guard 32 before the air current strikes less when going out from guard 32 to play the effect of making an uproar.

In an alternative embodiment, the first ring member 3211 has a center 101, and defines that an end of the first rib 3213 connected to the first ring member 3211 is a first connection end 102, an end of the first rib 3213 connected to the second ring member 3212 is a second connection end 103, a line connecting the center 101 and the first connection end 102 is a first straight line S, a line connecting the center 101 and the second connection end 103 is a second straight line M, an included angle α between the first straight line S and the second straight line M is α, and α is greater than 0 ° and less than 90 °. That is, the starting and ending points of the first ribs 3213 are rotated by an angle not more than pi/2. The included angle alpha is in the range, the goodness of fit of the airflow is best, and therefore the noise reduction effect is good. In some preferred embodiments, α may be selected from 30 °, 45 °, or 60 °.

In an alternative embodiment, a line tangent to the first connection end 102 is defined as a first tangent line T, a line tangent to the second connection end 103 is defined as a second tangent line P, an included angle between the first tangent line T and the first straight line S is defined as f, an included angle between the second tangent line P and the second straight line M is defined as n, and f > n. That is, the curvature of the end of the first rib 3213 adjacent to the first ring member 3211 is greater than the curvature of the end of the first rib 3213 adjacent to the second ring member 3212. Two adjacent first ribs 3213 have a larger distance at the first connection end 102, which is beneficial to noise reduction.

In an optional embodiment, the mesh enclosure body 321 further includes a third circular ring member 3214 and a second rib 3215, the third circular ring member 3214 is disposed at an interval inside the second circular ring member 3212, and is disposed concentrically with the second circular ring member 3212, and the second rib 3215 extends from an outer sidewall of the third circular ring member 3214 to an inner sidewall of the second circular ring member 3212 in an arc shape. As described above, the third circular ring member 3214 and the second ribs 3215 are provided to reduce noise.

In an alternative embodiment, the direction of curvature of the second ribs 3215 is coincident with the direction of curvature of the first ribs 3213. The uniform bending direction means that when the first ribs 3213 are bent clockwise, the second ribs 3215 are also bent clockwise, and vice versa, both are bent counterclockwise. The bending direction of the second ribs 3215 is consistent with the bending direction of the first ribs 3213, so that air flow can be smoothed, and noise reduction is achieved.

In an alternative embodiment, the front mesh enclosure 32 further includes a surrounding wall 322, and the surrounding wall 322 is disposed on the air outlet side 32b and surrounds the edge of the mesh enclosure body 321. The surrounding wall 322 can guide the airflow, so that the air outlet effect of the circulating fan 100 is good.

In an alternative embodiment, the wall 322 is contoured to have an undulating shape on the side away from the cap body 321. The wavy circular shape means that the surrounding wall 322 includes a plurality of wave troughs 3221 facing the center of the mesh enclosure body 321 and a plurality of wave crests 3222 far away from the center of the mesh enclosure body 321, and the plurality of wave troughs 3221 and the plurality of wave crests 3222 are staggered and connected in sequence to form an annular structure.

After adopting foretell technical scheme, through setting up the leg 322 into wave circle form, wave circle's leg 322 forms one section anomalous water conservancy diversion wall in air-out side 32b, can effectively delay the energy loss that the vortex air current that produces by wind-driving mechanism 34 goes on because of the small-scale structure of torrent to the production of noise abatement can make the air current flow field that spreads out from the screen panel 32 in the past even, promotes user experience in addition.

Referring to fig. 3 and fig. 7 to 11, in an alternative embodiment, the head mechanism 30 further includes a pressing ring 35, the pressing ring 35 is sleeved on the periphery of the front mesh enclosure 32 and detachably connected to the front mesh enclosure 32, and the pressing ring 35 is detachably connected to the front end of the middle frame 31.

In an optional embodiment, a plurality of screw fixing positions 3216 are arranged on the outer side wall of the mesh enclosure body 321 at intervals, the pressing ring 35 is provided with a plurality of notches 351, the plurality of screw fixing positions 3216 are embedded in the notches 351 in a one-to-one correspondence manner, and each screw fixing position 3216 is fastened on the pressing ring 35 through screws. Preferably, the screw fixing portion 3216 is disposed on an outer sidewall of the first ring member 3211.

In an optional embodiment, a plurality of protrusions 311 are spaced apart from the inner side wall of the middle frame 31, a plurality of L-shaped notches 352 are formed in the pressing ring 35, and the plurality of protrusions 311 are detachably engaged with the plurality of L-shaped notches 352.

When the front mesh enclosure 32 and the middle frame 31 are assembled, the pressing ring 35 is firstly sleeved on the outer side wall of the front mesh enclosure 32, the pressing ring 35 and the screw fixing piece 3216 are fastened through screws, and then the pressing ring 35 is fixed at the front end of the middle frame 31 in a mode that the protruding block 311 is clamped in the L-shaped notch 352, so that the assembly is very convenient.

In an alternative embodiment, the L-shaped notch 352 includes a first hole portion 3521 opened from a side of the pressing ring 35 adjacent to the rear mesh enclosure 33 in an axial direction of the pressing ring 35 and a second hole portion 3522 opened in a radial direction of the pressing ring 35, the second hole portion 3522 communicates with the first hole portion 3521, and the first hole portion 3521 and the second hole portion 3522 are combined to form an L-shape. When the press ring 35 and the middle frame 31 are assembled, the first hole portion 3521 of the press ring 35 is pressed down in alignment with the boss 311 so that the boss 311 is fitted into the first hole portion 3521, and then the press ring 35 is rotated so that the boss 311 is fitted into the second hole portion 3522.

In an alternative embodiment, the width of the second hole portion 3522 is smaller than the thickness of the protrusion 311, the inner wall surface of the second hole portion 3522 close to the rear mesh enclosure 33 is recessed with a groove 3523, and the protrusion 311 is embedded in the groove 3523, so that the protrusion 311 can be stably clamped in the second hole portion 3522.

In an alternative embodiment, the second hole portion 3522 is provided with a slant 3524 at a position adjacent to the inner wall surface of the rear mesh 33 and intersecting the first hole portion 3521, and the slant 3524 is used for facilitating the engagement of the protrusion 311 into the second hole portion 3522.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a preceding screen panel for circulation fan, its characterized in that, preceding screen panel includes:

2. The front mesh enclosure of claim 1, wherein the mesh enclosure body comprises:

a first circular ring member;

the second circular ring pieces are arranged on the inner side of the first circular ring piece at intervals and are arranged concentrically with the first circular ring piece;

the first ribs extend from the outer side wall of the second circular ring piece to the inner side wall of the first circular ring piece in an arc shape.

3. The front mesh enclosure of claim 2, wherein the first annular member has a center of circle, the end of the first rib connected to the first annular member is defined as a first connection end, the end of the first rib connected to the second annular member is defined as a second connection end, a line connecting the center of circle and the first connection end is a first straight line, a line connecting the center of circle and the second connection end is a second straight line, an included angle between the first straight line and the second straight line is α, and 0 ° < α < 90 °.

4. The front mesh enclosure of claim 3, wherein a line tangent to the first connecting end is defined as a first tangent line, a line tangent to the second connecting end is defined as a second tangent line, an included angle between the first tangent line and the first straight line is f, an included angle between the second tangent line and the second straight line is n, and f > n.

5. The front mesh enclosure of claim 2, wherein the mesh enclosure body further comprises:

the third circular ring pieces are arranged on the inner side of the second circular ring piece at intervals and are arranged concentrically with the second circular ring piece;

and the second ribs extend from the outer side wall of the third circular ring part to the inner side wall of the second circular ring part in an arc shape.

6. The front mesh cover according to claim 5, wherein a bending direction of the second ribs coincides with a bending direction of the first ribs.

7. A circulation fan, comprising:

a support mechanism;

the chassis mechanism is arranged at the bottom of the supporting mechanism;

wherein, the aircraft nose mechanism includes:

a middle frame;

the front mesh enclosure is connected with the front end of the middle frame, and the front mesh enclosure adopts the front mesh enclosure as claimed in any one of claims 1 to 6;

the rear net cover is connected with the rear end of the middle frame;

8. The circulation fan as claimed in claim 7, wherein the head mechanism further comprises:

the clamping ring, the clamping ring cover is located the periphery of preceding screen panel and with the connection can be dismantled to preceding screen panel, the clamping ring with the connection can be dismantled to the front end of center.

9. The circulation fan according to claim 8, wherein a plurality of screw fixing positions are protruded on the outer side wall of the mesh enclosure body at intervals, the pressing ring is provided with a plurality of notches, the plurality of screw fixing positions are embedded in the plurality of notches in a one-to-one correspondence manner, and each screw fixing position is fastened on the pressing ring through a screw.

10. The circulating fan as claimed in claim 8, wherein a plurality of projections are spaced from the inner side wall of the middle frame, the pressing ring is provided with a plurality of L-shaped notches, and a plurality of projections are detachably engaged with the plurality of L-shaped notches.