CN204517455U - A kind of portable charger based on vortex tube - Google Patents

Abstract

A portable charging device based on a vortex tube mainly includes: a portable air source, a buffer tank, a vortex tube, a thermoelectric power generation module, a voltage stabilizing module, a power storage module and a power output interface. The gas from the portable gas source enters the vortex tube, and the high-speed air flow undergoes energy separation in the vortex tube. One end generates hot air flow, and the other end generates cold air flow. The temperature of the hot and cold air flow can be adjusted through the heat flow regulating valve. The cold and hot air flow are respectively applied to the thermoelectric power generation The two sides of the chip generate electricity to charge electronic products such as mobile phones. The utility model only relies on a portable air source as a power source, is not affected by light conditions, rain and snow and other bad weather, and can work around the clock. The device has the advantages of simple composition, low cost, convenient operation, no maintenance, and convenient voltage adjustment, and can be widely used in field emergency charging of electronic products.

Description

A portable charging device based on vortex tube

Technical field:

The invention relates to a charging device, in particular to a device for emergency charging of electronic products such as mobile phones in the field.

Background technique:

With the development of social economy, portable electronic products such as mobile phones, PDAs, digital cameras, and MP4s are increasingly common in people's lives. Portable electronic products are generally powered by batteries, which need to be charged regularly due to the limitation of battery life. When people work in the field or travel outdoors for a long time, they often encounter the problem of being unable to charge electronic products in time, which brings a lot of inconvenience to life.

The Chinese patent application No. 201110087642.6 discloses a solar charger, which converts solar energy into electrical energy to power electronic devices. The disadvantage is that the solar charger is greatly affected by the weather and cannot work normally in rainy days and at night. The Chinese patent application No. 201110268385.6 discloses a hand-cranked charger, which generates electricity by manual hand-cranking. The charger includes components such as a micro-generator, a micro-battery pack, and electrodes. The structure is complex and requires regular inspection and maintenance.

In order to overcome the defects of the prior art, the present invention utilizes the energy separation principle of the vortex tube to propose a new type of portable charging device that can charge electronic products in a timely manner in an outdoor environment. It only uses a portable air source as power and does not depend on the weather. , has the advantages of simple structure, safety and reliability, and no maintenance.

Invention content:

The invention relates to a portable charging device based on a vortex tube, which mainly includes: a portable gas source, a buffer tank, a vortex tube, a thermoelectric power generation module, a voltage stabilizing module, a power storage module and a power output interface, and the outlet of the portable gas source passes through a hose It is connected to the inlet of the buffer tank, and the outlet of the buffer tank is connected to the inlet of the vortex tube through a hose. The hot gas inlet is connected, and the thermoelectric power generation module, the voltage stabilizing module, the power storage module and the power output interface are connected sequentially through metal wires.

The thermoelectric power generation module is composed of a thermoelectric power generation sheet, a cold air heat exchanger and a hot air heat exchanger. The cold air heat exchanger is composed of a cold end plate, a cold air distribution chamber and a heat exchange sheet; , several heat transfer fins are installed in the cold air heat exchanger, each heat transfer fin is parallel to each other and perpendicular to the inlet wall of the cold air distribution chamber; the hot end heat exchanger is composed of a hot end plate, a hot gas distribution chamber and heat transfer fins, There is a hot gas inlet on the inlet wall of the hot gas distribution chamber, and the heat exchange fins in the hot gas distribution chamber are parallel to each other and perpendicular to the inlet wall of the hot gas distribution chamber; the cold air heat exchanger is located above the hot air heat exchanger, and the thermoelectric power generation sheet is located Between the cold end plate of the heat exchanger and the hot end plate of the hot gas heat exchanger; the surface of the thermoelectric power generation module except the outlet is covered with an insulating layer.

The heat exchange fins, cold end plates, and hot end plates are all made of metal materials with good thermal conductivity.

The power storage module is equipped with a switching switch, through which the voltage stabilizing module can bypass the power storage module and directly communicate with the output interface of the power supply.

A heat flow regulating valve is installed near the outlet of the hot end of the vortex tube.

When the present invention is working, the gas from the portable gas source enters the vortex tube, and the energy separation occurs in the high-speed air flow in the vortex tube. One end generates a hot air flow, and the other end generates a cold air flow. The temperature of the hot and cold air flow can be adjusted through the heat flow regulating valve. The airflow is applied to both sides of the thermoelectric power generation sheet respectively, thereby generating electric energy for charging electronic products such as mobile phones.

Compared with the prior art, the present invention has the following beneficial effects:

(1) Only rely on portable air source as the power source, not affected by day and night light conditions, as well as bad weather such as rain and snow, and can work around the clock;

(2) The device has the advantages of simple composition, low cost, convenient operation, no maintenance, and convenient voltage adjustment.

Description of drawings:

Fig. 1 is the composition schematic diagram of the present invention;

Figure 2 is a schematic diagram of the working principle of the vortex tube;

Fig. 3 (a) and Fig. 3 (b) are the experimental characteristic curve of vortex tube;

Figure 4 is a schematic diagram of the outlet structure of the thermoelectric power generation module;

Fig. 5 is a structural schematic diagram of the cold air heat exchanger;

Fig. 6 is a schematic diagram of the structure of the hot gas heat exchanger.

Detailed ways:

The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the invention, and detailed implementation modes are provided, and the protection scope of the present invention is not limited to the following embodiments.

As shown in FIG. 1 , the present invention mainly includes a portable air source 1 , a buffer tank 2 , a vortex tube 3 , a thermoelectric power generation module 4 , a voltage stabilizing module 5 , a power storage module 6 and a power output interface 7 . The portable gas source 1 is a gas supply device that can provide a certain pressure, such as an inflator, a compressed gas tank, etc. The gas with a certain pressure provided by the portable gas source 1 enters the buffer tank 2 through the hose 8, and the buffer tank 2 The function is to balance the gas pressure and flow, and reduce the fluctuation of gas volume caused by the intermittent operation of gas supply devices such as pumps. The outlet of the buffer tank 2 communicates with the vortex tube inlet 9 of the vortex tube 3 through a hose 8 .

The vortex tube is a new type of energy separation device developed in the 1930s. As shown in Figure 2, described vortex tube 3 is mainly made up of vortex chamber 25, cold end pipe 22, hot end pipe 23 and heat flow regulating valve 24, and compressed gas enters vortex chamber 25 along tangential direction at very high speed, and air flow A high-speed vortex is formed in the vortex chamber 25, and is separated into two parts of airflow with unequal temperatures under the action of the vortex effect. Wherein, the temperature of the return airflow at the center decreases to form a cold airflow, which flows out from the cold air outlet 26 of the cold end pipe 22, while the temperature of the airflow at the outer layer increases to form a hot airflow, which flows out from the hot air outlet 27 of the hot end pipe 23. This phenomenon is called the energy separation effect of the vortex tube, also known as the Ranque effect. A heat flow regulating valve 24 is installed near the hot gas outlet 27 of the hot end pipe 23 . The heat flow regulating valve 24 can control the gas flow ratio entering the cold end pipe 22 and the hot end pipe 23 , thereby changing the airflow temperature of the cold air outlet 26 and the hot air outlet 27 .

Fig. 3(a) and Fig. 3(b) are characteristic curves of vortex tube experiments, wherein Fig. 3(a) shows the inlet pressure of 1.4bar, the inlet temperature of 25°C, and the ratio of hot and cold airflow is changed by the heat flow regulating valve 24 The obtained temperature change curve of the cold and hot air outlet. As can be seen from Fig. 3(a), when the ratio of the cold air flow reaches 0.8, that is, when the proportion of the cold air flow to the total air flow reaches 80%, the temperature of the cold air outlet 26 is about 9° C., and the temperature of the hot air outlet 27 is 84° C. , the temperature difference between the hot and cold plates will reach about 75°C. Fig. 3(b) is the change curve of the outlet temperature of the hot and cold air flow obtained by changing the ratio of the hot and cold air flow through the heat flow regulating valve 24 at an intake air pressure of 4.1 bar and an intake air temperature of 25°C. It can be seen from Fig. 3(b) To, when the cold air flow ratio reaches 0.8, the air flow temperature of the cold air outlet 26 is 5°C, the air flow temperature of the hot air outlet 27 is 105°C, and the temperature difference between the cold and hot air flow will reach about 100°C. Experiments have shown that after the air flow with a certain pressure passes through the vortex tube 3 , a cold and hot air flow with a large temperature difference will be formed, thereby driving the thermoelectric battery module 4 to work.

As shown in FIG. 1 , the thermoelectric power generation module 4 is composed of a thermoelectric power generation sheet 11 , a cold air heat exchanger 12 and a hot air heat exchanger 13 . As shown in Figure 4 and Figure 5, the cold air heat exchanger 12 is composed of a cold end plate 16, a cold air distribution chamber 17, and a heat exchange fin 14. The cold air inlet wall of the cold air distribution chamber 17 is provided with a cold air inlet 18, and several heat exchange The slices 14 are arranged parallel to each other and are all perpendicular to the inlet wall of the cold air distribution chamber 17 . As shown in FIG. 1 , the cold air outlet 26 of the vortex tube 3 is connected to the cold air inlet 18 of the cold air heat exchanger 12 through a hose 8 , and the low-temperature cold air flows into the cold air distribution chamber 17 through the hose 8 . Through the cold air distribution chamber 17 , the cold air is distributed to the flow channel formed by a plurality of parallel heat exchange fins 14 . After the cold air flow passes through the cold air heat exchanger 12, the temperature of the cold end plate 16 of the cold air heat exchanger 12 is maintained at a lower value by the sufficient heat exchange between the air flow and the cold air heat exchanger 12 wall. In order to enhance the heat exchanging effect, the heat exchanging fins 14 and the cold end plate 16 are made of aluminum and other metal materials with good thermal conductivity.

As shown in Fig. 4 and Fig. 6, the hot gas heat exchanger 13 is composed of a hot end plate 19, a hot gas distribution chamber 20 and heat exchange fins 14. A hot gas inlet 21 is provided on the inlet pipe wall of the hot gas distribution chamber 20, and several heat transfer fins 14 They are parallel to each other and perpendicular to the inlet wall of the hot gas distribution chamber 20 . As shown in FIG. 1 , the hot gas outlet 27 of the vortex tube 3 is connected to the hot gas inlet 21 of the hot gas heat exchanger 13 through a hose 8 , and the high temperature hot air flows into the hot gas distribution chamber 20 through the hose 8 . The hot gas distribution chamber 20 distributes the hot gas flow to the flow channels formed by the heat exchange fins 14 . The heat exchanging fins 14 and the hot end plate 19 are all made of aluminum and other metal materials with good thermal conductivity. When the hot air flow passes through the hot gas heat exchanger 13, it exchanges heat with the hot gas heat exchanger 13 through the air flow, and the heat of the hot air heat exchanger 13 End plate 19 is maintained at an elevated temperature.

Since the hot air flow tends to move upward and the cold air flow tends to move downward, in order to enhance the heat exchange effect between the cold and hot air flow and the cold end plate 16 and the hot end plate 19, the cold air heat exchanger 12 is located above the hot air heat exchanger 13 , the thermoelectric generation sheet 11 is located between the cold end plate 16 of the cold air heat exchanger 12 and the hot end plate 19 of the hot air heat exchanger 13 . As shown in Figure 4, in order to reduce the loss of cold and heat, keep a larger temperature difference between the cold end plate 16 and the hot end plate 19, except for the outlet of the cold end heat exchanger 12 and the hot gas heat exchanger 13, The surfaces of the rest of the thermoelectric power generation modules 4 are covered with an insulating layer 15 . It can be seen from the experimental data in FIG. 3 that the hot air heat exchanger 13 and the cold air heat exchanger 12 have a large temperature difference, and the thermoelectric power generation sheet 11 converts the temperature difference into electrical energy output.

As shown in FIG. 1 , the thermoelectric power generation sheet 11 in the thermoelectric power generation module 4 is connected to the voltage stabilizing module 5 through a wire 10 , and the stability of the output voltage is maintained by the built-in voltage stabilizing circuit of the voltage stabilizing module 5 , and the voltage stabilizing module 5 is connected through a wire 10 It is connected with the power storage module 6 and can charge the power storage module 6 . The power storage module 6 is equipped with a switch 28, through which the voltage stabilizing module 5 can directly communicate with the power output interface 7 across the power storage module 6, thereby directly providing power for mobile phones, flashlights and other equipment. When it is not necessary to charge the electronic equipment, the power storage module 6 can be charged by the switch 28, and when needed in the future, the power storage module 6 can be directly used to charge the electronic product.

The adjustment of the output voltage of the present invention is realized in this way: the ratio of the hot and cold air flow can be changed by the heat flow regulating valve 24 of the vortex tube 3, and then the output voltage of the thermoelectric power generation sheet 11 can be changed; in addition, the output voltage can be adjusted by the voltage stabilizing module 5 Further fine adjustment is performed to ensure the stability of the output voltage of the power output interface 7 .

The present invention skillfully utilizes the principle that the vortex tube generates cold air flow and hot air flow at the same time, and provides electric energy through the thermoelectric power generation module 4 . The core components of the present invention are the portable air source 1, the vortex tube 3, and the thermoelectric power generation sheet 11, etc., which are common equipment, low in price, and easy to carry. They are quickly connected by hoses and quick connectors to realize rapid power supply. Compared with the existing field power supply technology, its advantage is that it is not affected by the weather of solar power generation equipment, can generate electric energy, and can be used for emergency charging of mobile phones and flashlights.

Claims (5)

1. the portable charger based on vortex tube, it is characterized in that: mainly comprise: portable source of the gas (1), surge tank (2), vortex tube (3), temperature-difference power generation module (4), Voltage stabilizing module (5), power storage module (6) and power output interface (7), the outlet of portable source of the gas (1) is connected with surge tank (2) import by flexible pipe (8), the outlet of surge tank (2) is connected with the air inlet (9) of vortex tube (3) by flexible pipe (8), the cold air outlet (26) of vortex tube (3) is connected with the cold air import (18) of temperature-difference power generation module (4) by flexible pipe (8), the heat outlet (27) of vortex tube (3) is connected with the hot air intake (21) of temperature-difference power generation module (4) by flexible pipe (8), temperature-difference power generation module (4), Voltage stabilizing module (5), power storage module (6) and power output interface (7) are connected successively by plain conductor (10).

2. a kind of portable charger based on vortex tube according to claim 1, it is characterized in that, described temperature-difference power generation module (4) is made up of thermo-electric generation sheet (11), cold air heat exchanger (12) and hot gas heat exchanger (13), and cold air heat exchanger (12) is made up of cold end plate (16), cold air distributor chamber (17) and heat exchanger fin (14); Cold air distributor chamber import wall is provided with cold air import (18), several heat exchanger fins (14) are installed in cold air heat exchanger (12), each heat exchanger fin (14) is parallel to each other, and all perpendicular to cold air distributor chamber import wall; Hot gas heat exchanger (13) is made up of hotter side plate (19), hot gas distributor chamber (20) and heat exchanger fin (14), hot gas distributor chamber import wall is provided with hot air intake (21), in hot gas distributor chamber (20), each heat exchanger fin (14) is parallel to each other, and all perpendicular to hot gas distributor chamber import wall; Cold air heat exchanger (12) is positioned at the top of hot gas heat exchanger (13), and thermo-electric generation sheet (11) is positioned between the cold end plate (16) of cold air heat exchanger (12) and the hotter side plate (19) of hot gas heat exchanger (13); The remaining surface of temperature-difference power generation module (4) except outlet is all coated with heat-insulation layer (15).

3. a kind of portable charger based on vortex tube according to claim 1, is characterized in that, described heat exchanger fin (14), cold end plate (16), hotter side plate (19) all adopt the metal material of good heat conductivity.

4. a kind of portable charger based on vortex tube according to claim 1, it is characterized in that, described power storage module (6) is provided with diverter switch (28), Voltage stabilizing module (5) can be made to cross power storage module (6) be directly communicated with power output interface (7) by diverter switch (28).

5. a kind of portable charger based on vortex tube according to claim 1, is characterized in that, the heat pipe end (23) of described vortex tube (3) is provided with hot-fluid adjuster valve (24) near exit.