CN214742237U - Portable handheld electric fan - Google Patents

Abstract

The utility model discloses a portable handheld electric fan, its mainly by the fuselage shell of cavity form cylinder, the erection joint is in the cavity form conical nozzle of fuselage shell one end tip installs the turbofan in the fuselage shell of conical nozzle one end, installs the battery of the other end in the fuselage shell and supporting electronic component and the bottom equipment of erection joint at fuselage shell this end tip constitutes, it has a plurality of inlet ports to open on the conch wall at fuselage shell middle part, electronic component mainly include circuit switch, voltmeter, circuit board to and be used for connecting each electronic component's circuit. The utility model discloses simple structure, it is very convenient to use and carry, and its is small, the amount of wind is big, and the operating environment that is suitable for high temperature and dust to be many uses extremely, can effectively improve the comfort level of workman's work, also can regard as portable air-blower simultaneously, facilitates for occasions such as picnic.

Description

Portable handheld electric fan

Technical Field

The utility model relates to an electric fan specifically is a portable, the handheld cooling electric fan of little volume that is suitable for among the high temperature operational environment to use.

Background

At present, workers in various industries operate in high-temperature environments for a long time, such as the industries of plastics and cement production, metallurgy, casting and the like. The influence of high-temperature operation on human body mainly has two conditions: one is local injury, which refers to burns and scalds caused to the skin; the other is systemic high temperature injury, such as sunstroke and syncope. In order to reduce the high-temperature hazard, an air conditioner, a cooling fan and the like can be arranged in the working environment for workers to achieve the purpose of cooling. However, the working environment space of industries such as plastics, cement production, metallurgy, casting and the like is large, more dust is generated, if the air conditioner is adopted for cooling, an extremely-high-power air conditioner needs to be equipped, the electric power cost is high, and the air conditioner is difficult to achieve the understood cooling effect due to the large space; if the fan is used for cooling, a large-power large-model electric fan needs to be matched, the electric power cost is high, meanwhile, because dust in the environment is large, if the large-power large-model electric fan is adopted, a large amount of dust in the working environment can be blown, the dust is formed and sucked into the body of a worker, the body health of the worker is seriously influenced, meanwhile, the quality of a product processed by the worker is seriously influenced by the large amount of dust, and the service life of the fan is also seriously shortened; in addition, the large-power fan is large in size and fixed in position, the working position of a worker can be changed at any time, and the large-power fan with the fixed position cannot well cool the body of the worker at any time along with the change of the position of the worker.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the utility model is to provide a portable, small-size handheld cooling fan suitable for high-temperature working environment to solve the shortcomings and deficiencies in the background art.

The utility model provides a technical problem adopt following technical scheme to realize:

a portable handheld electric fan is characterized by mainly comprising a hollow cylindrical machine body shell, a hollow conical nozzle, a turbofan, a battery, a matched electronic assembly and a bottom cover, wherein the hollow conical nozzle is mounted and connected at one end of the machine body shell, the turbofan is mounted in the machine body shell at one end of the conical nozzle, the battery and the matched electronic assembly are mounted at the other end of the machine body shell, the bottom cover is mounted and connected at the end of the machine body shell, a plurality of air inlets are formed in the wall of the middle of the machine body shell, and the electronic assembly mainly comprises a circuit switch, a voltmeter, a circuit board and a circuit used for connecting the electronic assemblies.

To the utility model discloses, the conical nozzle inner wall have streamlined sunk structure, can make wind form the vortex through streamlined sunk structure, further increase the wind pressure.

To the utility model discloses, the inlet port install the protection filter screen, the protection filter screen pass through the fix with screw on the outer wall of fuselage shell.

To the utility model discloses, interconnect between conical nozzle, fuselage shell, the bottom three is quick detach structural connection or threaded connection.

To the utility model discloses, turbofan's periphery is provided with the supporting installation circle of round and fuselage shell inner wall, it has supporting screw to open on the installation circle and the fuselage shell installation position that corresponds (install turbofan promptly) on, turbofan pass through screw and fix with screw in the fuselage shell.

To the utility model discloses, the symmetry is provided with two on fuselage shell's the outer wall and hangs the knot, hang to detain and connect and hang the rope to will the utility model discloses hang positions such as human neck, convenient to carry.

To the utility model discloses, the battery be rechargeable battery and be supporting to have the battery charger.

To the utility model discloses, circuit switch, voltmeter to and rechargeable battery's the mouth that charges, all install on fuselage shell's outer wall through the circuit.

To the utility model discloses, the battery be a lesson, or two or more sections are established ties.

Has the advantages that: the utility model discloses simple structure, it is very convenient to use and carry, and its is small, the amount of wind is big, and the operating environment that is suitable for high temperature and dust to be many uses extremely, can effectively improve the comfort level of workman's work, also can regard as portable air-blower simultaneously, facilitates for occasions such as picnic.

Drawings

FIG. 1 is a front view of the overall structure of the present invention;

fig. 2 is a sectional view taken along line a-a of the present invention.

In the figure: 1-body shell, 2-conical nozzle, 3-turbofan, 4-battery, 5-bottom cover, 6-air inlet, 7-circuit switch, 8-voltmeter, 9-protective filter screen, 10-installation ring, 11-support rod, 12-screw hole and screw, 13-hanging buckle, 14-hanging rope and 15-charging port.

Detailed Description

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Referring to fig. 1 and 2, a portable handheld electric fan is mainly composed of a hollow cylindrical body case 1, a hollow conical nozzle 2 installed at one end of the body case, a turbo fan 3 installed in the body case at one end of the conical nozzle, a battery 4 installed at the other end of the body case, a matching electronic component and a bottom cover 5 installed at the end of the body case, wherein a plurality of air inlets 6 are formed on a wall of the body case at the middle part of the body case, and the electronic component mainly includes a circuit switch 7, a voltmeter 8, a circuit board (not shown in the figure) and a circuit for connecting the electronic components.

In the specific implementation:

1. the conical nozzle is a cone with one large end and the other small end, the inner wall of the conical nozzle is provided with a streamline concave structure (formed by a plurality of concave lines which spiral towards the direction of the air outlet, such as the rifling shape of the inner wall of the gun barrel), and wind can form vortex through the streamline concave structure, so that the wind pressure is further increased.

2. The inlet port sets up in the middle part position of fuselage casing, turbofan's below, and its effect is using the utility model discloses an in-process, turbofan blows off the air in the fuselage shell from conical nozzle, and outside air gets into the fuselage shell from this inlet port again. In order to prevent to use in the many occasions of dust the utility model discloses in the time dust gets into fuselage shell from the inlet port, can block up conical nozzle, turbofan when the dust is excessive, can cause each electronic component short circuit even install round protection filter screen 9 on the fuselage shell outer wall of inlet port position, this protection filter screen is fine meshed structure to fix through the screw on fuselage shell's the outer wall. When the dust deposition on the protection filter screen is too much, the screw can be unscrewed, and the protection filter screen is detached for cleaning.

3. The mounting connection between the conical nozzle and the machine body shell and the mounting connection between the machine body shell and the bottom cover can adopt common quick-release structures on the market (for example, one end uses a buckle, the other end uses an elastic buckle, and the buckle is hooked on the buckle and then compressed tightly during connection. The above-mentioned installation and connection method is not limited by the above-mentioned two methods, but no matter which connection method is adopted, the sealing performance of the connection position should be fully ensured.

4. As shown in the attached drawing 2, the turbofan is driven by a motor connected with a battery in the middle to rotate, a circle of mounting ring 10 is fixed on the periphery of the blade through a support rod 11, the size of the mounting ring is consistent with the size of the inner wall of the body shell, a plurality of screw holes are uniformly formed on the mounting ring, a plurality of screw holes matched with the screw holes on the mounting ring are uniformly arranged on the corresponding body shell mounting position (namely the body shell position where the turbofan is mounted), when the turbofan is mounted and fixed, the turbofan is pushed into the inner cavity of the body shell, and after the screw holes on the mounting ring are aligned with the screw holes on the body shell, screws are screwed into the screw holes (each corresponding screw hole and screw are marked with 12 in the attached drawing), so that the turbofan is fixed in the inner cavity of the body shell.

5. In order to be convenient to hang the utility model on the neck of human body, etc., so that the utility model is convenient to carry, two hanging buckles 13 are symmetrically arranged on the outer wall of the shell of the machine body, and the hanging buckles are connected with a hanging rope 14.

6. The battery adopted by the utility model can be a common battery, can also be a rechargeable battery, can be a battery, and can also be two or more batteries connected in series; in order to save the use cost, the best scheme is to adopt a rechargeable battery and match the rechargeable battery with a battery charger: the battery box is internally provided with three sections of LG18650 batteries with capacity of 3350mAh, the batteries are connected in series and provided with battery protection boards, the overcharging and over-discharging of the batteries are prevented, the discharging cut-off voltage is 2.85V, and the charging cut-off voltage is 4.25V; the battery is connected with the protection plate through a nickel sheet with the thickness of 0.15mm, the welding mode is spot welding, and the welding spot is firm and reliable.

7. The circuit switch (for turning on or off the turbo fan and adjusting the speed of the turbo fan in steps), the voltmeter (for observing the battery capacity), and the charging port 15 of the rechargeable battery are all mounted on the outer wall of the body casing through wires.

8. In order not to influence normal work, should minimize the volume of fan, also guarantee amount of wind and wind pressure simultaneously, so this uses novel turbine fan (turbofan) that adopts, the turbocharging principle as follows: the turbine fan drives the impeller to rotate by the motor, the blades in the impeller force the gas to rotate, the gas does work to increase the momentum of the gas, the gas is thrown out to the periphery of the impeller under the action of centrifugal force, the kinetic energy is converted into pressure energy through the scroll type casing, after the gas in the impeller is discharged, the pressure in the impeller is lower than the pressure in the air inlet pipe, new gas is sucked into the impeller under the action of pressure difference, and the gas is continuously discharged from the fan. However, the machining precision of the fan blades of the turbine fan is higher than that of a common cooling fan, and the noise generated when the impeller has dust deposition or runs at a high speed is also higher, so that the dust filtering effect of the protective filter screen is ensured as far as possible, and the filter screen is cleaned regularly.

The utility model discloses simple structure, it is very convenient to use and carry, and its is small, the amount of wind is big, and the operating environment that is suitable for high temperature and dust to be many uses extremely, can effectively improve the comfort level of workman's work, also can regard as portable air-blower simultaneously, facilitates for occasions such as picnic.

The basic principles and main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are intended to be included within the scope of the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (9)

1. A portable handheld electric fan is characterized in that: the novel air-conditioning unit is mainly composed of a hollow cylindrical body shell, a hollow conical nozzle, a turbofan, a battery, a matched electronic assembly and a bottom cover, wherein the hollow conical nozzle is arranged at one end of the body shell, the turbofan is arranged in the body shell at one end of the conical nozzle, the battery is arranged at the other end of the body shell, the bottom cover is arranged at the end of the body shell, the shell wall at the middle part of the body shell is provided with a plurality of air inlets, and the electronic assembly mainly comprises a circuit switch, a voltmeter and a circuit board and is used for connecting circuits of the electronic assemblies.

2. The portable handheld electric fan of claim 1, wherein: the inner wall of the conical nozzle is provided with a streamline concave structure.

3. The portable handheld electric fan of claim 1, wherein: the air inlet hole is provided with a protective filter screen, and the protective filter screen is fixed on the outer wall of the machine body shell through screws.

4. The portable handheld electric fan of claim 1, wherein: the conical nozzle, the machine body shell and the bottom cover are connected with each other through quick-release structures or threads.

5. The portable handheld electric fan of claim 1, wherein: the periphery of the turbofan is provided with a circle of mounting ring matched with the inner wall of the machine body shell, matched screw holes are formed in the mounting ring and the corresponding mounting position of the machine body shell, and the turbofan is fixed in the machine body shell through the screw holes and screws.

6. The portable handheld electric fan of claim 1, wherein: the outer wall of the machine body shell is symmetrically provided with two hanging buckles, and the hanging buckles are connected with hanging ropes.

7. The portable handheld electric fan of claim 1, wherein: the battery is a rechargeable battery and is matched with a battery charger.

8. The portable handheld electric fan of claim 1, wherein: the circuit switch, the voltmeter and the charging port of the rechargeable battery are all arranged on the outer wall of the shell of the machine body through lines.

9. A portable handheld electric fan according to claim 1 or 7, wherein: the battery is one or two or more connected in series.

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