CN112524065A - Portable telescopic folding bladeless fan - Google Patents

Portable telescopic folding bladeless fan Download PDF

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Publication number
CN112524065A
CN112524065A CN202011416855.4A CN202011416855A CN112524065A CN 112524065 A CN112524065 A CN 112524065A CN 202011416855 A CN202011416855 A CN 202011416855A CN 112524065 A CN112524065 A CN 112524065A
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CN
China
Prior art keywords
wind wheel
shell
wheel set
blades
rotary table
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Granted
Application number
CN202011416855.4A
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Chinese (zh)
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CN112524065B (en
Inventor
杨传福
王智
邱福光
彭卫
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Dongguan Xiangheyuan Electronic Technology Co ltd
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Dongguan Xiangheyuan Electronic Technology Co ltd
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Publication of CN112524065A publication Critical patent/CN112524065A/en
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Publication of CN112524065B publication Critical patent/CN112524065B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F04D29/162—Sealings between pressure and suction sides especially adapted for elastic fluid pumps of a centrifugal flow wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
    • F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a portable telescopic folding bladeless fan which comprises a shell, cross-flow wind wheels and a control part, wherein the cross-flow wind wheels are divided into an upper group and a lower group, and a space capable of accommodating the control part to retract is formed in the shell; the blades are provided with bristles, and the front ends of the bristles are in contact with or close to the inner circumferential surface of the shell. According to the invention, the bristles are arranged on the cross-flow wind wheel, and the bristles are used for plugging the gap between the outer end surface of the blade and the inner circumferential surface of the shell, so that the wind is prevented from flowing back from the gap, and the effect of increasing the total wind volume is achieved. Meanwhile, the brush hair can solve the problem of wind backflow, so that the wind quantity does not need to be increased by widening fan blades, the rotating speed does not need to be increased by increasing the power of a motor, the fan can keep smaller size, the control part can be completely retracted into the shell when the fan is not needed, the length of the whole fan is reduced by at least one third, the small bag and the portable bag can be conveniently put in, and the carrying is more convenient.

Description

Portable telescopic folding bladeless fan
Technical Field
The invention relates to the technical field of fan products, in particular to a portable bladeless fan, namely a bladeless fan with no exposed blades.
Background
The fan is widely used for cooling in various fields due to low cost, low power consumption and convenient use, and is most commonly used for indoor floor fans, table fans, wall fans and the like. However, such fans are generally cumbersome and inconvenient to carry. Therefore, a portable fan has been invented by some people, and the fan can be taken along for use when people go out or go to the occasion without the fan or the air conditioner. The first axial fans appeared with the blades exposed and covered by protective wind, but they still have safety hazards. Therefore, the portable fan based on the cross-flow type fan blade is invented, and the fan can better solve the problems of the traditional axial flow type fan.
However, the conventional portable cross-flow fan has the following problems that firstly, the blades extend along the axial direction, are long in length, are generally made of plastics, are low in strength, can shake to a certain extent when the fan blade rotates at a high speed, and the longer the length and the wider the width of the blades, the larger the shaking amplitude is, and particularly the shaking is aggravated when the fan is held in the hand. Therefore, in order to prevent the blade from being damaged due to the shaking collision of the blade on the shell, a larger gap needs to be reserved between the blade and the inner circumferential surface of the shell. Firstly, the blades of the cross-flow wind wheel are originally small, and the blades need to be made smaller in order to realize portability and reserved gaps, so that the air output is influenced, and the effect of the portable fan is poor. At the moment, the size of the whole fan is enlarged so as to increase the size of the blades synchronously and improve the air quantity, so that the portable characteristic is sacrificed; or the rotating speed of the fan blade is increased by adopting a high-power motor, so that the requirement on the fan blade is higher, potential safety hazards are possibly caused, and meanwhile, the noise is also increased sharply. Secondly, because the clearance between the shell and the blades is large, in the process of high-speed rotation of the fan blade, a lot of wind flows out of the clearance and cannot be driven by the blades to flow forwards, so that the wind loss is caused, according to measurement and calculation, the wind loss reaches about one third of the total wind, the power of the motor is seriously wasted, and the effect of the fan is reduced.
Secondly, the size and length of the fan are constant, and in order to make the fan blow enough wind, the whole fan, especially the wind wheel, must be made to have enough length and radius, so that the whole length of the fan is usually not less than 20CM, otherwise, the whole length of the fan is not smaller than 20CM, and the whole length of the fan is not much wind (of course, the wind is not particularly obvious although the wind is influenced by one or two centimeters). However, it is difficult to put a fan with a length of 20cm or more into a small bag or a pocket on the body, which is inconvenient to carry. In addition, the existing portable fan has the problem of single function.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art, and provides a portable telescopic foldable bladeless fan which is more reasonable in structural design, can improve air quantity on the premise of not increasing motor power, and can reduce length when not in use.
In order to solve the technical problems, the invention adopts the following technical scheme: a portable telescopic folding bladeless fan comprises a shell, a cross-flow wind wheel, a motor, a circuit board and a battery, wherein the cross-flow wind wheel, the motor, the circuit board, the battery and the shell are assembled into a portable structure; the motor is connected to the through-flow wind wheel, and motor connecting circuit board, circuit board connection battery, circuit board are connected with control button, its characterized in that: the control part comprises a control box, and the motor, the circuit board and the battery are arranged in a control bin of the control box to form the whole control part; the control box and the shell are of a split structure, and a space capable of accommodating the control box to retract is arranged in the shell;
the cross flow wind wheel at least comprises an upper wind wheel set and a lower wind wheel set, the lower end of the lower wind wheel set is connected with the motor, and the lower end of the upper wind wheel set is connected with the upper end of the lower wind wheel set to form a structure that the upper wind wheel set and the lower wind wheel set can synchronously rotate; the blades of the upper wind wheel set and the blades of the lower wind wheel set are staggered with each other to form a structure that the blades of the lower wind wheel set can be inserted into the upper wind wheel set so as to shorten the length of the whole cross flow wind wheel;
the blades are provided with bristles which extend out of the outer end faces of the blades, so that the front ends of the bristles are in contact with or close to the inner circumferential face of the shell (for example, a gap of several millimeters can be formed), and a blocking structure for the gap between the blades and the inner circumferential face of the shell is formed.
Furthermore, the shell comprises a shell, an air inlet support and an air outlet support, the shell is formed by butt joint of a left half and a right half, and the air inlet support and the air outlet support are butt jointed to form a complete inner frame; the air inlet support is provided with an air inlet grid, and the air inlet grid is aligned to the air inlet; the air outlet support is provided with an air outlet grid, and the air outlet grid is aligned to the air outlet; an annular accommodating groove matched with the control box is arranged between the lower half sections of the air inlet support and the air outlet support and the lower half section of the shell, and the control box is inserted into the top end of the accommodating groove to enable the whole control part to be completely retracted into the shell.
Furthermore, the bristles are fixed on the outer end faces of the blades in an implanted mode, the bristles extend out towards the inner circular faces of the air inlet support and the air outlet support along the normal direction of the cross-flow wind wheel, and the bristles are fully distributed on the whole outer end faces of the blades. When the cross-flow wind wheel rotates, the brush hair rotates along with the cross-flow wind wheel, so that gaps among the blades, the air inlet support and the air outlet support can be blocked, and the air loss caused by backflow of wind from the gaps can be prevented.
Furthermore, the lower wind wheel set comprises a lower bottom turntable and a lower top turntable, the upper wind wheel set comprises an upper bottom turntable and an upper top turntable, and the lower bottom turntable is connected with a transmission shaft of the motor; the upper end and the lower end of each blade of the lower wind wheel set are respectively inserted into the lower bottom rotary table and the lower top rotary table; the upper bottom rotary table and the lower top rotary table are fixedly connected, a rotating shaft of the upper top rotary table is installed at the top end of an inner frame consisting of an air inlet support and an air outlet support through a bearing, and the lower bottom rotary table, the lower top rotary table, the upper bottom rotary table and the upper top rotary table are coaxially arranged; the upper end of the blade of the lower wind wheel set penetrates through the lower top rotary table and then is inserted into the upper bottom rotary table, and the lower end of the blade of the lower wind wheel set is inserted into the lower bottom rotary table; the upper end of the blade of the upper wind wheel set is inserted into the upper top turntable, and the lower end of the blade penetrates through the upper bottom turntable and then is inserted into the lower top turntable; the lower top rotating disc and the upper bottom rotating disc are respectively provided with a through hole through which the blades of the lower wind wheel set can pass, when the control part is pushed into the shell, the blades of the lower wind wheel set pass through the through holes and are inserted between the blades of the upper wind wheel set, when the control part is completely retracted into the shell, the lower bottom rotating disc is attached to the lower top rotating disc, at the moment, the length of the whole fan can be reduced by at least one third, and the original fan with the length of 22 cm can be shortened to be about 13 cm.
Furthermore, the control box is formed by butt joint of a left half and a right half, butt joints with the thickness larger than that of the main body part of the control box are respectively arranged at the butt joint parts of the two half control boxes, and the two half control boxes are mutually inserted through the opposite butt joints to form a butt joint fixing structure; the two half control boxes clamp the outer shell at the outer side of the butt joint respectively, and the inner sides clamp the air inlet support and the air outlet support respectively, so that a rotation stopping structure of the control box on the circumferential surface is formed, and the control part is prevented from rotating.
Furthermore, the lengths of the upper wind wheel set and the lower wind wheel set are basically equivalent, the maximum length of the control part extending out of the shell is basically equivalent to that of the upper wind wheel set and the lower wind wheel set, and the length of the accommodating groove is not less than that of the lower wind wheel set; the lower end of the shell is fixed with a decorative ring, and the lower part of the shell is hooped and fixed through the decorative ring.
Furthermore, a clamping plate and a clamping plate are arranged in the control box at positions corresponding to the motor, the upper end and the lower end of the motor are clamped and fixed through the clamping plate, and the middle of the motor is clamped and fixed through the clamping plate. The fixing structure can keep the running stability of the motor and the cross-flow wind wheel to the maximum extent and can also enable the structure to be more stable.
A lamp and an alarm can be arranged, the lamp is arranged at the front end of the fan (namely the upper end of the shell) and comprises a driving board, a reflecting cup and a glass cover, the driving board is connected with the battery, the reflecting cup covers the LED lamp beads on the driving board, and the glass cover covers the reflecting cup through the clamping of the shell (the prior art can realize the purpose); the alarm is connected with the battery and is provided with an audible and visual alarm mechanism, and the shell is provided with an excitation structure for preventing the alarm from being touched by mistake. Of course, both the alarm and the false touch prevention excitation structure can be directly realized by using the prior art, such as a wolf prevention alarm in the prior art. When a user (especially women, children and the old) meets some emergency situations, the alarm can be activated, and the alarm gives out sound and/or light alarm.
The battery is a rechargeable lithium battery, a charging interface is arranged on the side face of the control box, and the charging interface is a TYPEC interface, a LIGHT TNING interface or a MIRCO-USB interface; an external charging interface is also arranged on the side surface of the control box, is a USB interface and can be used for carrying out reverse charging on other electronic products; the control key is arranged on the bottom surface of the control box.
The hanging rope is also arranged, the shell is provided with a rotating mechanism, and two ends of the hanging rope are respectively in structure with the rotating mechanism; a detachable counterweight mechanism is arranged on one side of the air inlet of the shell, so that the fan can keep an upward air outlet after being hung transversely. For example, hang the rope at the neck, make the fan horizontal, at this moment under counter weight mechanism's effect, shell can be rotatory relatively rotating mechanism, makes counter weight mechanism rotate bottommost position, and the air intake is down this moment, and the air outlet is up, more accords with the demand that people blown towards the head.
The fan cover can be further provided with a cylindrical mesh cover matched with the fan, the fan is placed in the mesh cover to be stored, so that the fan cover can be conveniently placed in a bag or other devices to be carried, and sundries in the bag are prevented from entering the fan to affect use.
The bottom of the shell can be provided with a sucker, the fan is fixed on the supporting surface through the sucker, and if the fan is vertically fixed on a desktop through the sucker or is transversely fixed on a wall surface.
The invention arranges the brush hair on the cross flow wind wheel or the outer end surface of the blade, and seals the gap between the outer end surface of the blade and the inner circumferential surface of the shell through the brush hair, thereby preventing the wind from flowing back from the gap, and achieving the effect of increasing the total wind volume. The problem of wind backflow can be solved by arranging the bristles, so that the wind quantity does not need to be increased by widening the fan blades, the rotating speed does not need to be increased by increasing the power of the motor, the overall size of the fan cannot be increased, and the smaller size is kept; secondly, the noise of the motor during operation can not be increased. Meanwhile, the control part is designed into a structure separated from the shell, the cavity capable of accommodating the control part is arranged in the shell, and the cross-flow wind wheel is designed into a structure in which the upper group and the lower group are in butt joint, so that the whole control part can be completely retracted into the shell when the fan is not needed, the length of the whole fan is reduced by at least one third, and therefore, the length of twelve and three centimeters is only left, the small bag and the portable pocket can be conveniently put in, and the carrying is more convenient. In addition, auxiliary devices such as a lamp, an alarm, a hanging rope, a mesh enclosure and the like can be arranged in the fan to realize corresponding auxiliary functions, so that the fan achieves a multifunctional effect.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a perspective view of another embodiment of the present invention;
FIG. 3 is an internal structure view of the present invention with half of the housing and half of the control box removed;
FIG. 4 is an internal structure view of the present invention with one half of the housing and the air intake bracket removed;
FIG. 5 is an internal structural view of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 4;
fig. 7 is a partially enlarged view of fig. 5.
In the figure, 1 is a housing, 11 is an air inlet, 12 is an air outlet, 21 is an upper air wheel set, 22 is a lower air wheel set, 23 is a lower rotary table, 24 is a lower rotary table, 25 is an upper rotary table, 26 is an upper rotary table, 27 is a blade, 28 is a through hole, 3 is a control part, 31 is a control box, 32 is a butt joint, 33 is a control cabin, 34 is a circuit board, 35 is a control key, 36 is a USB interface, 37 is a MICRO USB interface, 38 is a clamping plate, 39 is a clamping plate, 4 is a motor, 5 is an air inlet bracket, 51 is an air inlet grid, 6 is an air outlet bracket, 7 is bristles, 8 is a decorative ring, and 9 is a containing groove.
Detailed Description
In this embodiment, referring to fig. 1 to 7, the portable retractable and foldable bladeless fan includes a casing, a cross-flow wind wheel, a motor 4, a circuit board 34, and a battery (not shown), wherein the cross-flow wind wheel, the motor 4, the circuit board 34, the battery, and the casing are assembled into a portable structure, and an air outlet 12 and an air inlet 11 are disposed on a side wall of the casing, and are respectively opposite to the cross-flow wind wheel; the cross-flow wind wheel is connected with the motor 4, the motor 4 is connected with the circuit board 34, the circuit board 4 is connected with the battery 4, and the circuit board 34 is connected with the control key 35; the control device also comprises a control part 3, wherein the control part 3 comprises a control box 31, and a motor 4, a circuit board 34 and a battery are arranged in a control cabin 33 of the control box 31 to form the whole control part 3; the control box 31 and the shell are in a split structure, and a space capable of accommodating the control box to retract is arranged in the shell;
the cross flow wind wheel at least comprises an upper wind wheel set 21 and a lower wind wheel set 22, the lower end of the lower wind wheel set 22 is connected with the motor 4, the lower end of the upper wind wheel set 21 is connected with the upper end of the lower wind wheel set 22, and a structure that the upper wind wheel set 21 and the lower wind wheel set 22 can synchronously rotate is formed; the blades 27 of the upper wind wheel set 21 and the blades 27 of the lower wind wheel set 22 are staggered with each other to form a structure that the blades 27 of the lower wind wheel set 22 can be inserted into the upper wind wheel set 21 so as to shorten the length of the whole cross flow wind wheel;
the blades 27 are provided with bristles 7, the bristles 7 extend beyond the outer end surfaces of the blades 27, and the front ends of the bristles 7 are in contact with or close to the inner circumferential surface of the housing (for example, a gap of several millimeters may be provided), so that a blocking structure for the gap between the blades 27 and the inner circumferential surface of the housing is formed.
The shell comprises a shell 1, an air inlet support 5 and an air outlet support 6, wherein the shell 1 is formed by butt joint of a left half and a right half, and the air inlet support 5 and the air outlet support 6 are butt jointed to form a complete inner frame; the air inlet support 5 is provided with an air inlet grid 51, and the air inlet grid 51 is aligned with the air inlet 11; the air outlet support 6 is provided with an air outlet grid which is aligned with the air outlet 12; an annular accommodating groove 9 matched with the control box 31 is arranged between the lower half sections of the air inlet support 5 and the air outlet support 6 and the lower half section of the shell 1, and the control box 31 is inserted into the top end of the accommodating groove 9 to enable the whole control part 3 to be completely retracted into the shell 1.
The bristles 7 are fixed on the outer end face of the blade 27 in an embedded mode, the bristles 7 extend out towards the inner circular faces of the air inlet support 5 and the air outlet support 6 along the normal direction of the cross-flow wind wheel, and the bristles 7 are fully distributed on the whole outer end face of the blade 27. When the cross-flow wind wheel rotates, the brush bristles 7 rotate along with the cross-flow wind wheel, so that gaps among the blades 27, the air inlet support 5 and the air outlet support 6 can be blocked, and air loss caused by backflow of wind from the gaps is prevented.
The lower wind wheel set 22 comprises a lower bottom turntable 23 and a lower top turntable 24, the upper wind wheel set 21 comprises an upper bottom turntable 25 and an upper top turntable 26, and the lower bottom turntable 23 is connected with a transmission shaft of the motor 4; the upper end and the lower end of the blade 27 of the lower wind wheel set 22 are respectively inserted into the lower rotary table 23 and the lower rotary table 24; the upper bottom rotary table 25 is fixedly connected with the lower top rotary table 24, a rotating shaft of the upper top rotary table 26 is arranged at the top end of an inner frame consisting of the air inlet bracket 5 and the air outlet bracket 6 through a bearing, and the lower bottom rotary table 23, the lower top rotary table 24, the upper bottom rotary table 25 and the upper top rotary table 26 are coaxially arranged; the upper ends of the blades 27 of the lower wind wheel set 22 penetrate through the lower top rotary table 24 and then are inserted into the upper bottom rotary table 25, and the lower ends of the blades are inserted into the lower bottom rotary table 23; the upper ends of the blades 27 of the upper wind wheel set 21 are inserted in the upper top rotary table 26, and the lower ends of the blades penetrate through the upper bottom rotary table 25 and then are inserted in the lower top rotary table 24; through holes 28 for blades 27 of the lower wind wheel set 22 to pass through are formed in the lower top rotating disc 24 and the upper bottom rotating disc 25, when the control part 3 is pushed into the shell, the blades 27 of the lower wind wheel set 22 pass through the through holes 28 and are inserted between the blades 27 of the upper wind wheel set 21, when the control part 3 is completely retracted into the shell, the lower bottom rotating disc 23 is attached to the lower top rotating disc 24, at the moment, the length of the whole fan can be reduced by at least one third, and the original 22 cm long fan can be shortened to be about 13 cm.
The control box 31 is formed by butt joint of a left half and a right half, butt joints 32 with the thickness larger than that of a main body part of the control box 31 are respectively arranged at the butt joint parts of the two half control boxes 31, and the two half control boxes 31 are mutually inserted through the opposite butt joints 32 to form a butt joint fixing structure; the two half control boxes 31 clamp the outer shell 1 at the outer side of the butt joint respectively, and clamp the air inlet bracket 5 and the air outlet bracket 6 at the inner side respectively, so that a rotation stopping structure of the control box 31 on the circumferential surface is formed, and the control part 3 is prevented from rotating.
The length of the upper wind wheel set 21 is basically equivalent to that of the lower wind wheel set 22, the maximum length of the control part 3 extending out of the shell is basically equivalent to that of the upper wind wheel set 21 and the lower wind wheel set 22, and the length of the accommodating groove 9 is not less than that of the lower wind wheel set 22; a decoration ring 8 is fixed at the lower end of the shell 1, and the lower part of the shell 1 is clamped and fixed through the decoration ring 8.
A clamping plate 38 and a clamping plate 39 are arranged in the control box 31 corresponding to the motor 4, the upper end and the lower end of the motor 4 are clamped and fixed through the clamping plate 38, and the middle of the motor 4 is clamped and fixed through the clamping plate 39. The fixing structure can keep the running stability of the motor 4 and the cross-flow wind wheel to the maximum extent and can also enable the structure to be more stable.
A lamp and an alarm (not shown) can be arranged, the lamp is arranged at the front end of the fan (namely the upper end of the shell), and comprises a driving board, a reflecting cup and a glass cover, the driving board is connected with the battery, the reflecting cup covers the LED lamp beads on the driving board, and the glass cover covers the reflecting cup through the clamping of the shell (the prior art can realize the purpose); the alarm is connected with the battery and is provided with an audible and visual alarm mechanism, and the shell is provided with an excitation structure for preventing the alarm from being touched by mistake. Of course, both the alarm and the false touch prevention excitation structure can be directly realized by using the prior art, such as a wolf prevention alarm in the prior art. When a user (especially women, children and the old) meets some emergency situations, the alarm can be activated, and the alarm gives out sound and/or light alarm.
The battery is a rechargeable lithium battery, a charging interface is arranged on the side face of the control box 31, and the charging interface is a MIRCO-USB interface 37; an external charging interface is also arranged on the side surface of the control box 31, and the external charging interface is a USB interface 36 and can be used for charging other electronic products; the control key 35 is provided on the bottom surface of the control box 31.
A hanging rope (not shown) is also arranged, a rotating mechanism is arranged on the shell, and two ends of the hanging rope are respectively connected with the rotating mechanism; a detachable counterweight mechanism is arranged on one side of the air inlet of the shell, so that the fan can keep an upward air outlet after being hung transversely. For example, hang the rope at the neck, make the fan horizontal, at this moment under counter weight mechanism's effect, shell can be rotatory relatively rotating mechanism, makes counter weight mechanism rotate bottommost position, and the air intake is down this moment, and the air outlet is up, more accords with the demand that people blown towards the head.
The fan can be accommodated in the mesh enclosure by arranging the fan, so that the fan can be conveniently put into a bag or carried by other devices, and the situation that sundries in the bag enter the fan to affect use can be avoided.
A suction cup (not shown) may be disposed at the bottom of the housing, and the fan may be fixed on the supporting surface by the suction cup, for example, the fan may be vertically fixed on a table top by the suction cup, or may be horizontally fixed on a wall surface.
The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. Meanwhile, the upper, lower, left, right directions are formed at a specific viewing angle, and when the viewing angle is changed, the directions are changed.

Claims (10)

1. A portable telescopic folding bladeless fan comprises a shell, a cross-flow wind wheel, a motor, a circuit board and a battery, wherein the cross-flow wind wheel, the motor, the circuit board, the battery and the shell are assembled into a portable structure; the motor is connected to the through-flow wind wheel, and motor connecting circuit board, circuit board connection battery, circuit board are connected with control button, its characterized in that: the control part comprises a control box, and the motor, the circuit board and the battery are arranged in a control bin of the control box to form the whole control part; the control box and the shell are of a split structure, and a space capable of accommodating the control box to retract is arranged in the shell;
the cross flow wind wheel at least comprises an upper wind wheel set and a lower wind wheel set, the lower end of the lower wind wheel set is connected with the motor, and the lower end of the upper wind wheel set is connected with the upper end of the lower wind wheel set to form a structure that the upper wind wheel set and the lower wind wheel set can synchronously rotate; the blades of the upper wind wheel set and the blades of the lower wind wheel set are staggered with each other to form a structure that the blades of the lower wind wheel set can be inserted into the upper wind wheel set so as to shorten the length of the whole cross flow wind wheel;
the blades are provided with bristles which extend out of the outer end faces of the blades, so that the front ends of the bristles are in contact with or close to the inner circumferential face of the shell, and a sealing structure for a gap between the blades and the inner circumferential face of the shell is formed.
2. The portable, telescopically collapsible, bladeless fan according to claim 1, wherein: the shell comprises a shell, an air inlet support and an air outlet support, wherein the shell is formed by butt joint of a left half part and a right half part, and the air inlet support and the air outlet support are butt joint to form a complete inner frame; the air inlet support is provided with an air inlet grid, and the air inlet grid is aligned to the air inlet; the air outlet support is provided with an air outlet grid, and the air outlet grid is aligned to the air outlet; an annular accommodating groove matched with the control box is arranged between the lower half sections of the air inlet support and the air outlet support and the lower half section of the shell, and the control box is inserted into the top end of the accommodating groove to enable the whole control part to be completely retracted into the shell.
3. The portable, telescopically collapsible, bladeless fan according to claim 2, wherein: the bristles are fixed on the outer end faces of the blades in an implanted mode, the bristles extend out towards the inner circular faces of the air inlet support and the air outlet support along the normal direction of the cross-flow wind wheel, and the bristles are distributed on the whole outer end faces of the blades.
4. The portable, telescopically collapsible, bladeless fan according to claim 2, wherein: the lower wind wheel set comprises a lower bottom turntable and a lower top turntable, the upper wind wheel set comprises an upper bottom turntable and an upper top turntable, and the lower bottom turntable is connected with a transmission shaft of the motor; the upper end and the lower end of each blade of the lower wind wheel set are respectively inserted into the lower bottom rotary table and the lower top rotary table; the upper bottom rotary table and the lower top rotary table are fixedly connected, a rotating shaft of the upper top rotary table is installed at the top end of an inner frame consisting of an air inlet support and an air outlet support through a bearing, and the lower bottom rotary table, the lower top rotary table, the upper bottom rotary table and the upper top rotary table are coaxially arranged; the upper end of the blade of the lower wind wheel set penetrates through the lower top rotary table and then is inserted into the upper bottom rotary table, and the lower end of the blade of the lower wind wheel set is inserted into the lower bottom rotary table; the upper end of the blade of the upper wind wheel set is inserted into the upper top turntable, and the lower end of the blade penetrates through the upper bottom turntable and then is inserted into the lower top turntable; through holes for blades of the lower wind wheel set to pass through are formed in the lower top rotating disc and the upper bottom rotating disc, the blades of the lower wind wheel set penetrate through the through holes and are inserted between the blades of the upper wind wheel set when the control part is pushed into the shell, and the lower bottom rotating disc is attached to the lower top rotating disc when the control part is completely retracted into the shell.
5. The portable, telescopically collapsible, bladeless fan according to claim 2, wherein: the control box is formed by butt joint of a left half and a right half, butt joints with the thickness larger than that of the main body part of the control box are respectively arranged at the butt joint parts of the two half control boxes, and the two half control boxes are mutually inserted through the opposite butt joints to form a butt joint fixed structure; the two half control boxes clamp the outer shell at the outer side of the butt joint respectively, and the inner sides clamp the air inlet support and the air outlet support respectively to form a rotation stopping structure of the control box on the circumferential surface.
6. The portable, telescopically collapsible, bladeless fan according to claim 2, wherein: the length of the upper wind wheel set is basically equivalent to that of the lower wind wheel set, the maximum length of the control part extending out of the shell is basically equivalent to that of the upper wind wheel set and the lower wind wheel set, and the length of the accommodating groove is not less than that of the lower wind wheel set; the lower end of the shell is fixed with a decorative ring, and the lower part of the shell is hooped and fixed through the decorative ring.
7. The portable, telescopically collapsible, bladeless fan according to claim 2, wherein: the position of the inside corresponding motor of control box is provided with splint and cardboard, and the upper and lower both ends of motor are through splint clamp tight fixed, and the centre of motor is then fixed through the cardboard chucking.
8. The portable, telescopically collapsible, bladeless fan according to claim 2, wherein: the LED lamp is characterized by further comprising a lamp and an alarm, wherein the lamp is arranged at the front end of the fan and comprises a driving board, a reflecting cup and a glass cover, the driving board is connected with the battery, the reflecting cup covers the LED lamp beads on the driving board, and the glass cover is clamped by the shell to cover the reflecting cup; the alarm is connected with the battery and is provided with an audible and visual alarm mechanism, and the shell is provided with an excitation structure for preventing the alarm from being touched by mistake.
9. The portable, telescopically collapsible, bladeless fan according to claim 1, wherein: the battery is a rechargeable lithium battery, a charging interface is arranged on the side face of the control box, and the charging interface is a TYPEC interface, a LIGHT TNING interface or a MIRCO-USB interface; an external charging interface is also arranged on the side surface of the control box, and the external charging interface is a USB interface; the control key is arranged on the bottom surface of the control box.
10. The portable, telescopically collapsible, bladeless fan according to claim 2, wherein: the hanging rope is also arranged, the shell is provided with a rotating mechanism, and two ends of the hanging rope are respectively in structure with the rotating mechanism; a detachable counterweight mechanism is arranged on one side of the air inlet of the shell, so that the fan can keep an upward air outlet after being hung transversely.
CN202011416855.4A 2020-06-12 2020-12-07 Portable telescopic folding bladeless fan Active CN112524065B (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN114087237A (en) * 2021-12-17 2022-02-25 广东美的白色家电技术创新中心有限公司 Bladeless fan

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CN106402003A (en) * 2016-10-27 2017-02-15 广东美的环境电器制造有限公司 Lifting assembly for fan and tower fan with lifting assembly
CN207864202U (en) * 2017-12-29 2018-09-14 杭州热浪工业产品设计有限公司 A kind of portable bladeless fan of through-flow
CN109538526A (en) * 2018-11-28 2019-03-29 珠海格力电器股份有限公司 Through-flow fan blade and air-conditioner set
CN110005623A (en) * 2019-05-08 2019-07-12 青岛海尔空调器有限总公司 Cross flow fan and air conditioner including the blower

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE629550C (en) * 1933-01-19 1936-05-05 Electrofan G M B H Electrically driven small fan
US20050207887A1 (en) * 2003-03-26 2005-09-22 Nidec Corporation Centrifugal Fan
TWM322676U (en) * 2007-04-30 2007-11-21 Power Circling Co Ltd Heat dissipating device with radial current fan motor
CN106402003A (en) * 2016-10-27 2017-02-15 广东美的环境电器制造有限公司 Lifting assembly for fan and tower fan with lifting assembly
CN207864202U (en) * 2017-12-29 2018-09-14 杭州热浪工业产品设计有限公司 A kind of portable bladeless fan of through-flow
CN109538526A (en) * 2018-11-28 2019-03-29 珠海格力电器股份有限公司 Through-flow fan blade and air-conditioner set
CN110005623A (en) * 2019-05-08 2019-07-12 青岛海尔空调器有限总公司 Cross flow fan and air conditioner including the blower

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114087237A (en) * 2021-12-17 2022-02-25 广东美的白色家电技术创新中心有限公司 Bladeless fan
CN114087237B (en) * 2021-12-17 2024-03-08 广东美的白色家电技术创新中心有限公司 Bladeless fan

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