CN216477949U

CN216477949U - Portable fan

Info

Publication number: CN216477949U
Application number: CN202123029873.XU
Authority: CN
Inventors: 许加华; 杨广; 刘凯
Original assignee: Shenzhen Ranvoo Technology Co Ltd
Current assignee: Shenzhen Ranvoo Technology Co Ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-05-10
Anticipated expiration: 2031-12-03

Abstract

The utility model discloses a portable fan, including the casing and set up in first fan and second fan in the casing, the direction of rotation of first fan with the direction of rotation of second fan is opposite, the casing is in first fan with be provided with the wall that keeps out the wind between the second fan, and first fan with one side of second fan air-out is provided with the air guide grid, the air guide grid orientation extend in the casing and with keep out the wall butt, the extending width that the air guide grid is close to the wall position that keeps out the wind is greater than and keeps away from the extending width of wall position keeps out the wind. The utility model discloses an in the scheme, the air guide grid can also play the effect of snail tongue in the wind-guiding for the air current that is in the air guide grid intermediate position can be followed same direction and concentrated the derivation, and is not offset by the interference of each other. In addition, the portable fan is not provided with structures such as a handle, and the occupied volume can be reduced.

Description

Portable fan

Technical Field

The utility model relates to a fan technical field especially relates to a portable fan.

Background

The application limitation that large-scale fan brought has been solved in the appearance of portable fan, no matter be the use scenes such as motion, outdoor activities or office, people can all realize the demand of blowing anytime and anywhere through carrying portable fan.

However, the conventional portable fan usually has only one fan, and the air volume is small, so that the requirement of a user for quickly reducing the body temperature through blowing cannot be met. Secondly, a handle convenient for a user to hold is usually arranged on the shell of the portable fan, but the existence of the handle occupies a relatively large space, and the portability of the fan device is greatly influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, an object of the present invention is to provide a portable fan with a large air volume.

In order to achieve the above object, the embodiment of the present invention provides a technical solution that:

the utility model provides a portable fan, includes the casing and set up in first fan and second fan in the casing, the direction of rotation of first fan with the direction of rotation of second fan is opposite, the casing is in first fan with be provided with between the second fan and keep out the wind wall, and first fan with one side of second fan air-out is provided with the air guide grid, the air guide grid orientation extend in the casing and with keep out the wind wall butt, the extending width that the air guide grid is close to the wall position of keeping out the wind is greater than and keeps away from the extending width of wall position keeps out the wind.

Preferably, the extension width of the air guide grille gradually decreases from the center of the air guide grille to both ends of the air guide grille.

Preferably, the wind-guiding grid is formed by connecting a plurality of transverse wind-guiding ribs and a plurality of longitudinal wind-guiding ribs, the transverse wind-guiding ribs face one end of the wind-shielding wall and/or the longitudinal wind-guiding ribs face one end of the wind-shielding wall and are provided with cutting parts.

Preferably, a groove is formed in one side, facing the wind shielding wall, of the wind guiding grid, and the top end of the wind shielding wall is embedded into the groove; or a groove is formed in one side, facing the air guide grid, of the wind shielding wall, and the air guide grid is embedded into the groove.

Preferably, the casing includes apron, inner shell and set up in the shell in the inner shell outside, first fan, the second fan with the wall that keeps out the wind all set up in the inner shell, the wind-guiding grid set up in on the apron, the apron lid fits on the uncovered of inner shell.

Preferably, the portable fan includes a battery, a battery compartment for accommodating the battery is formed between the inner casing and the outer casing, an arc-shaped air guiding portion is disposed at a position of the inner casing corresponding to the battery compartment, and the arc-shaped air guiding portion extends toward an edge of the air guiding grille.

Preferably, the inner casing further includes a wind collecting plate connected to the arc wind guide portion, and the wind collecting plate is bent toward the wind shielding wall and abuts against the wind guide grille.

Preferably, the inner case includes a first inner case and a second inner case connected to the first inner case, and the outer case includes a first outer case disposed outside the first inner case and a second outer case disposed outside the second inner case; a first main air inlet corresponding to the first fan and a second main air inlet corresponding to the second fan are formed in the first inner side shell, and a plurality of main air inlet holes are correspondingly formed in the first outer side shell; the battery bin is formed between the second inner shell and the second outer shell, and the arc-shaped air guide part is arranged on the second inner shell.

Preferably, a first auxiliary air inlet corresponding to the first fan and a second auxiliary air inlet corresponding to the second fan are arranged on the second inner side shell, and the first auxiliary air inlet and the second auxiliary air inlet are both communicated with the battery bin; and a plurality of auxiliary air inlet holes are formed in the second inner shell or the second outer shell, and the auxiliary air inlet holes are communicated with the outside and the battery bin.

Preferably, a first mounting seat and a second mounting seat are arranged on one side of the second inner side shell, which faces away from the second outer side shell, the first fan is mounted on the first mounting seat, the first auxiliary air inlet is arranged in the circumferential direction of the first mounting seat, the second fan is mounted on the second mounting seat, and the second auxiliary air inlet is arranged in the circumferential direction of the second mounting seat.

In the above-mentioned scheme of this application, because portable fan includes the casing and sets up first fan and the second fan in the casing, first fan and second fan rotate simultaneously to the air-guiding grid air-out, and the amount of wind is bigger. The first fan and the second fan are separated by the wind shielding wall and do not interfere with each other. The extension width of the position, close to the wind shielding wall, of the wind guide grating is larger than that of the position, far away from the wind shielding wall, of the wind guide grating, and the wind guide grating can play a role of a volute tongue besides wind guide, so that air flow in the middle of the wind guide grating can be led out in a concentrated mode along the same direction, and mutual interference and cancellation are avoided. In addition, the portable fan is not provided with structures such as a handle, and the occupied volume can be reduced.

Drawings

FIG. 1 is a perspective view of a portable fan according to an embodiment of the present application;

FIG. 2 is a perspective view of an embodiment of a portable fan with a cover plate removed;

FIG. 3 is a perspective view of a cover plate in an embodiment of the present application;

FIG. 4 is a disassembled view of the portable fan in the embodiment of the present application;

FIG. 5 is another disassembled view of the portable fan of the present embodiment;

FIG. 6 is a further exploded view of the portable fan of the embodiment of the present application;

fig. 7 is a perspective view of another perspective view of the portable fan according to the embodiment of the present application.

Description of reference numerals:

100-shell, 101-wind screen wall, 102-arc wind guide part, 103-wind gathering plate,

110-cover plate, 111-wind guide grid, 112-blade, 113-groove, 114-air outlet, 120-inner shell, 121-first inner shell, 122-second inner shell, 130-outer shell, 131-first outer shell and 132-second outer shell;

210-a first fan, 220-a second fan;

301-battery compartment, 302-first main air inlet, 303-second main air inlet, 304-main air inlet hole, 305-first auxiliary air inlet, 306-second auxiliary air inlet, 307-auxiliary air inlet hole, 308-first mounting seat, 309-second mounting seat;

401-circuit board, 402-on-off key, 403-interface, 404-indicator light, 405-stringing hole and 406-battery.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to the drawings and specific embodiments. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. 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. In the following description, reference is made to the expression "some embodiments" which describe a subset of all possible embodiments, but it should be understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

It will also be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "inner," "outer," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

Referring to fig. 1 to 5, an embodiment of the present application provides a portable fan, including a casing 100, and a first fan 210 and a second fan 220 disposed in the casing 100, a rotation direction of the first fan 210 is opposite to a rotation direction of the second fan 220, the casing 100 is disposed with a wind shielding wall 101 between the first fan 210 and the second fan 220, and a wind guiding grille 111 is disposed at a side of the wind exiting from the first fan 210 and the second fan 220, the wind guiding grille 111 is formed with a plurality of wind exiting holes 114, the wind guiding grille 111 extends toward the casing 100 and abuts against the wind shielding wall 101, and an extension width of a position of the wind guiding grille 111 close to the wind shielding wall 101 is greater than an extension width of a position far from the wind shielding wall 101.

The first fan 210 and the second fan 220 rotate simultaneously to output air to the air guide grille 111, so as to meet the requirement of large air volume. The wind shielding wall 101 is located between the first fan 210 and the second fan 220 and is abutted to the wind guide grille 111 to prevent the air flow generated by the first fan 210 and the air flow generated by the second fan 220 from interfering with each other to affect the air volume. Since the rotation direction of the first fan 210 is opposite to the rotation direction of the second fan 220, the air flow is largest at the middle position of the air guide grill 111 (i.e., at the wind shielding wall 101). The air guide grille 111 has the largest extending width at the center (near the wind shielding wall 101) and the smallest extending width at the opposite ends (the farther from the wind shielding wall 101, the smaller the extending width). The air guide grille 111 is equivalent to the extension of the air ducts of the first fan 210 and the second fan 220, and particularly, the extension width of the middle position is large, so that the air guide grille can play a role of a volute tongue, and air flows in the middle position of the air guide grille 111 can be intensively led out along the same direction and are not interfered and offset mutually.

In the above-mentioned scheme of this application, because portable fan includes casing 100 and sets up first fan 210 and second fan 220 in casing 100, first fan 210 and second fan 220 rotate simultaneously and turn to air-guiding grid 111 air-out, and the amount of wind is bigger. The first fan 210 and the second fan 220 are spaced apart by the wind shielding wall 101 without interfering with each other. The extension width of the position, close to the wind shielding wall 101, of the wind guide grid 111 is larger than that of the position, far away from the wind shielding wall 101, of the wind guide grid 111, the wind guide grid 111 is used for guiding wind and can also play a role of a volute tongue, so that air flows in the middle of the wind guide grid 111 can be intensively guided out in the same direction and are not interfered and offset mutually. In addition, the portable fan is not provided with structures such as a handle, and the occupied volume can be reduced.

Preferably, the air guiding grid 111 is formed by connecting a plurality of transverse air guiding ribs and a plurality of longitudinal air guiding ribs, the transverse air guiding ribs are provided with blade portions 112 towards one end of the wind shielding wall 101, and/or the longitudinal air guiding ribs are provided with blade portions 112 towards one end of the wind shielding wall 101, and the blade portions 112 become thinner gradually along the direction close to the first fan 210/the second fan 220. In the present embodiment, the blade 112 is provided on the lateral wind-guiding rib and/or the longitudinal wind-guiding rib to further reduce the resistance of the wind, and the airflow can be smoothly guided into the wind-outlet hole 114 when passing through the blade 112, thereby increasing the wind speed and the wind volume. Further, a groove 113 is formed on the side of the air guide grille 111 facing the wind shielding wall 101, and the top end of the wind shielding wall 101 is fitted into the groove 113. The wind shielding wall 101 is embedded in the groove 113, so that the connection between the wind shielding wall 101 and the wind guide grille 111 is tighter, and the first fan 210 and the second fan 220 are completely isolated. In other embodiments, a groove is formed on the side of the wind shielding wall 101 facing the wind guide grille 111, and the wind guide grille 111 is embedded in the groove as long as the wind shielding wall 101 and the wind guide grille 111 are tightly connected.

Preferably, the extending width of the air guide grille 111 gradually decreases from the center of the air guide grille 111 to both ends. In the embodiment shown in the drawings, the extension width of the air guide grille 111 gradually decreases from the center of the air guide grille 111 to both ends thereof in a streamline and smooth manner, thereby avoiding the influence on the air volume to the maximum extent. In another embodiment, the extension width of the air guide grille 111 may be reduced from the center of the air guide grille 111 to both ends in a stepped or zigzag shape.

As the specific embodiment of the present invention, the casing 100 includes the cover plate 110, the inner casing 120 and the outer casing 130 disposed outside the inner casing 120, the first fan 210, the second fan 220 and the wind shielding wall 101 are disposed inside the inner casing 120, the wind guiding grille 111 is disposed on the cover plate 110, and the cover plate 110 covers the opening of the inner casing 120. The inner casing 120 is used to form an air duct and mount the first fan 210 and the second fan 220, and the outer casing 130 is used to function as a protective casing and cover the outer side of the inner casing 120. Meanwhile, the space between the inner case 120 and the outer case 130 may house other components. For maintenance and tuyere design, the inner casing 120 is of an open structure and is closed by a cover plate 110. The cover plate 110 and the inner shell 120 may be connected by a snap fit or screws.

Further, the portable fan includes a battery, a battery compartment 301 for accommodating the battery is formed between the inner casing 120 and the outer casing 130, a battery 406 is disposed in the battery compartment 301, and the battery 406 is used for supplying power to the first fan 210 and the second fan 220. The inner casing 120 is provided with an arc-shaped air guiding portion 102 at a position corresponding to the battery compartment 301, and the arc-shaped air guiding portion 102 extends toward the edge of the air guiding grille 111. The arc-shaped air guide part 102 is arranged, so that the air outlet of the air duct is designed to be wide-mouthed, and the air flow is guided to the air guide grating 111, so that the air outlet angle is increased, and the air outlet quantity is increased.

Further, the inner casing 120 further includes a wind collecting plate 103 connected to the arc-shaped wind guide portion 102, and the wind collecting plate 103 is bent toward the wind shielding wall 101 and abuts against the wind guide grill 111. The wind-collecting plate 103 plays a role of guiding wind to collect wind flow, and avoids wind loss to enable the wind flow to be sent out from the wind-guiding grille 111.

Referring to fig. 4 to 7, as a preferred embodiment of the present invention, the inner casing 120 includes a first inner casing 121 and a second inner casing 122 connected to the first inner casing 121, and the outer casing 130 includes a first outer casing 131 disposed outside the first inner casing 121 and a second outer casing 132 disposed outside the second inner casing 122; the first inner shell 121 is provided with a first main air inlet 302 corresponding to the first fan 210 and a second main air inlet 303 corresponding to the second fan 220, and the first outer shell 131 is correspondingly provided with a plurality of main air inlet holes 304; the battery compartment 301 is formed between the second inner casing 122 and the second outer casing 132, and the arc-shaped air guiding part 102 is disposed on the second inner casing 122. The external air flows into the first main inlet 302 and the second main inlet 303 of the first inner casing 121 through the plurality of main inlet openings 304 of the first outer casing 131, and the first fan 210 and the second fan 220 accelerate the air in the respective air channels to form an air flow to be blown out from the air guide grille 111 of the cover plate 110.

Preferably, the second inner casing 122 is provided with a first auxiliary air inlet 305 corresponding to the first fan 210 and a second auxiliary air inlet 306 corresponding to the second fan 220, the first auxiliary air inlet 305 and the second auxiliary air inlet 306 are both communicated with the battery compartment 301, the second inner casing 122 or the second outer casing 132 is provided with a plurality of auxiliary air inlet holes 307, and the auxiliary air inlet holes 307 are communicated with the outside and the battery compartment 301. A part of the air flows to the first fan 210 from the auxiliary air inlet hole 307, the battery compartment 301 and the first auxiliary air inlet 305 in sequence, and another part of the air flows to the second fan 220 from the auxiliary air inlet hole 307, the battery compartment 301 and the second auxiliary air inlet 306 in sequence, so as to perform the function of auxiliary air inlet. And because the air flows through the battery compartment 301, the heat dissipation efficiency of the battery can be improved at the same time.

A first mounting seat 308 and a second mounting seat 309 are arranged on one side of the second inner casing 122 facing away from the second outer casing 132, the first fan 210 is mounted on the first mounting seat 308, a first auxiliary air inlet 305 is arranged on the first mounting seat 308 in the circumferential direction, the second fan 220 is mounted on the second mounting seat 309, and a second auxiliary air inlet 306 is arranged on the second mounting seat 309 in the circumferential direction. In the embodiment shown in the figures, the first secondary intake vent 305 is a plurality of arcuate holes surrounding the first mounting base 308, and the second secondary intake vent 306 is a plurality of arcuate holes surrounding the second mounting base 309. The second inner casing 122 is further provided with a circuit board 401, the first fan 210 and the second fan 220 are both connected with the circuit board 401, the cover plate 110 is provided with an on-off key 402, and the on-off key 402 corresponds to a switch on the circuit board 401, so that the first fan 210 and the second fan 220 can be turned on and off by pressing the on-off key 402. The housing 100 is further provided with an interface 403 and an avoidance hole for avoiding the indicator lamp 404 of the circuit board 401. The interface 403 is electrically connected to a battery 406 for charging the battery 406, and an indicator lamp 404 for displaying the status of the battery 406. Preferably, the portable fan further includes a hanging cord connected to both sides of the housing 130. The housing 100 is no longer provided with a handle structure, but can be carried by being provided with a rope threading hole 405 and the like to match with a hanging rope.

The above embodiments are only 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 changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a portable fan, its characterized in that, include the casing and set up in first fan and second fan in the casing, the direction of rotation of first fan with the direction of rotation of second fan is opposite, the casing is in first fan with be provided with the wall that keeps out the wind between the second fan, and first fan with one side of second fan air-out is provided with the air guide grid, the air guide grid orientation extend in the casing and with keep out the wall butt, the extending width that the air guide grid is close to the wall position that keeps out the wind is greater than and keeps away from the extending width of wall position keeps out the wind.

2. The portable fan as claimed in claim 1, wherein the extension width of the air guide grill is gradually reduced from the center of the air guide grill to both ends.

3. The portable fan as claimed in claim 1, wherein the air guide grille is formed by connecting a plurality of lateral air guide ribs and a plurality of longitudinal air guide ribs, the lateral air guide ribs are formed with blades at ends facing the wind shielding wall, and/or the longitudinal air guide ribs are formed with blades at ends facing the wind shielding wall.

4. The portable fan as claimed in claim 1, wherein a groove is formed on a side of the air guiding grille facing the wind shielding wall, and a top end of the wind shielding wall is embedded in the groove; or a groove is formed in one side, facing the air guide grid, of the wind shielding wall, and the air guide grid is embedded into the groove.

5. The portable fan according to any one of claims 1 to 4, wherein the casing includes a cover plate, an inner casing, and an outer casing disposed outside the inner casing, the first fan, the second fan, and the wind blocking wall are disposed inside the inner casing, the wind guiding grille is disposed on the cover plate, and the cover plate covers an opening of the inner casing.

6. The portable fan of claim 5, wherein the portable fan comprises a battery, a battery compartment for accommodating the battery is formed between the inner casing and the outer casing, and an arc-shaped air guiding portion is disposed on the inner casing at a position corresponding to the battery compartment and extends toward an edge of the air guiding grille.

7. The portable fan of claim 6, wherein the inner case further comprises a wind-collecting plate connected to the arc-shaped wind-guiding portion, the wind-collecting plate being bent toward the wind-guiding wall and abutting against the wind-guiding grille.

8. The portable fan of claim 6, wherein said inner case comprises a first inner case and a second inner case connected to said first inner case, and said outer case comprises a first outer case disposed outside said first inner case and a second outer case disposed outside said second inner case; a first main air inlet corresponding to the first fan and a second main air inlet corresponding to the second fan are formed in the first inner side shell, and a plurality of main air inlet holes are correspondingly formed in the first outer side shell; the battery bin is formed between the second inner shell and the second outer shell, and the arc-shaped air guide part is arranged on the second inner shell.

9. The portable fan of claim 8, wherein the second inner housing has a first auxiliary inlet corresponding to the first blower and a second auxiliary inlet corresponding to the second blower, and the first auxiliary inlet and the second auxiliary inlet are both in communication with the battery compartment; and a plurality of auxiliary air inlet holes are formed in the second inner shell or the second outer shell, and the auxiliary air inlet holes are communicated with the outside and the battery bin.

10. The portable fan of claim 9, wherein a side of the second inner case facing away from the second outer case is provided with a first mounting seat and a second mounting seat, the first fan is mounted on the first mounting seat, a circumferential direction of the first mounting seat is provided with the first auxiliary air inlet, the second fan is mounted on the second mounting seat, and a circumferential direction of the second mounting seat is provided with the second auxiliary air inlet.