TWI852808B - Gas supply system and wearable gas supply components - Google Patents

Abstract

This invention discloses a gas supply system and a wearable gas supply component. The gas supply system comprises a gas supply device and a wearable gas supply component. The wearable gas supply component includes a main body, an ear-hanging structure, a gas supply arm, an airflow sensor, a processing module, and an electronic gas valve. The ear-hanging structure is designed to hang on the user's ear. The gas supply arm is connected to the main body and has a gas supply channel within. The airflow sensor is positioned around the gas supply end of the gas supply arm. The electronic gas valve is set on the gas flow path connecting the gas supply arm and the gas supply device. When the processing module determines that the user's nostril is exhaling based on the airflow direction signal generated by the airflow sensor, the processing module will control the electronic gas valve to close, preventing the gas produced by the gas supply device from passing through the gas supply channel, and thus the gas outlet of the gas supply arm will not release gas.

Description

Gas supply systems and wearable gas supply components

The present invention relates to a gas supply system and a wearable gas supply assembly, in particular to a wearable gas supply assembly that is convenient for a user to wear and a gas supply system comprising the wearable gas supply assembly.

Common oxygen supply equipment and related air supply equipment are usually used together with oxygen masks. Oxygen masks usually include a mask and two elastic bands. When using, the user covers the mouth and nose with the mask and hangs the two elastic bands on the two ears. With this design, users often experience various discomforts after long-term use, such as pain caused by the ears being strangled by the two elastic bands, and marks left on the face by the mask.

In addition, since the air supply equipment and the oxygen mask continuously supply oxygen, when the user wears the oxygen mask, when the user exhales, the mouth and nose will be covered by the oxygen mask, and the oxygen mask will continuously discharge oxygen, and the user will easily feel the problem of breathing difficulties.

The present invention discloses a gas supply system and a wearable gas supply assembly, which are used to improve the inconvenience brought to users by the known gas supply mask and related gas supply system.

One embodiment of the present invention discloses a gas supply system, which includes: a gas supply device and a wearable gas supply assembly. The gas supply device is used to generate at least one gas, which is at least one of oxygen and hydrogen; the wearable gas supply assembly includes: a body, an ear hanging structure, a gas supply arm, an air flow sensor, a processing module and an electronic gas valve. The ear-hanging structure is connected to the main body, and the ear-hanging structure is used to hang on the ear of the user; the air supply arm is connected to the main body, and an air supply channel is provided in the air supply arm. The two ends of the air supply arm are respectively a connecting end and an air supply end, and the connecting end is connected to the air supply device through a pipeline; the air supply end is used to be arranged near the nostril of the user; the air flow sensor is arranged on the air supply arm, and the air flow sensor is close to the air supply end, and the air flow sensor can sense whether the user's nostrils are exhaled, and generate a corresponding air flow direction signal accordingly; the processing module The group is arranged in the main body, the processing module is electrically connected to the air flow sensor; the electronic gas valve is electrically connected to the processing module, and the electronic gas valve is arranged on the gas flow path where the gas supply arm is connected to the gas supply equipment; wherein, when the processing module determines that the user's nostrils are exhaling according to the gas flow direction signal, the processing module will control the electronic gas valve so that the gas supply end does not supply gas; wherein, when the processing module determines that the user's nostrils are inhaling according to the gas flow direction signal, the processing module will control the electronic gas valve so that the gas supply end supplies gas.

One embodiment of the present invention discloses a wearable air supply assembly, which includes: a body, an ear-hanging structure, an air supply arm, an air flow sensor, a processing module and an electronic air valve. The ear-hanging structure is connected to the body, and the ear-hanging structure is used to hang on the user's ear; the air supply arm is connected to the body, and the air supply arm has an air supply channel, and the two ends of the air supply arm are respectively a connecting end and an air supply end, and the connecting end is connected to an air supply device through a pipeline; the air supply end is used to be set close to the user's nostrils; the air flow sensor is set on the air supply arm, and the air flow sensor is close to the air supply end, and the air flow sensor can sense whether the user's nostrils are exhaling, and generate a corresponding air flow direction signal accordingly; the processing module The module is arranged in the main body, the processing module is electrically connected to the air flow sensor; the electronic gas valve is electrically connected to the processing module, and the electronic gas valve is arranged on the gas flow path where the gas supply arm is connected to the gas supply equipment; wherein, when the processing module determines that the user's nostrils are exhaling according to the gas flow direction signal, the processing module will control the electronic gas valve so that the gas supply end does not supply gas; wherein, when the processing module determines that the user's nostrils are inhaling according to the gas flow direction signal, the processing module will control the electronic gas valve so that the gas supply end supplies gas.

In summary, the gas supply system and wearable gas supply assembly of the present invention can be convenient for users to use through the ear hanging structure, gas supply arm and other designs, and can effectively improve the problem that the conventional oxygen mask will bring inconvenience to the user when worn for a long time. In addition, the gas supply system and wearable gas supply assembly of the present invention will not supply gas to the user when the user exhales through the design of air flow sensor, electronic gas valve and other designs, so as to effectively improve the user's experience.

To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, such description and drawings are only used to illustrate the present invention and do not limit the protection scope of the present invention.

In the following description, if it is indicated to refer to a specific figure or as shown in a specific figure, it is only used to emphasize that in the subsequent description, most of the related contents mentioned are shown in the specific figure, but it does not limit the subsequent description to only refer to the specific figure. It should be noted that in order to clearly present all the components included in the gas supply system of the present invention, the size and proportion of each component in each figure of the present invention are only for illustration and are not used as a limitation of the actual size and proportion.

Please refer to Figures 1 to 3 together. Figure 1 is a schematic diagram of the gas supply system of the present invention, Figure 2 is a schematic diagram of the wearable gas supply assembly of the present invention worn on the user's head, and Figure 3 is a partial enlarged schematic diagram of Figure 1.

The gas supply system 600 of the present invention comprises: a gas supply device 6, a pipeline 7 and a wearable gas supply assembly 8. The gas supply device 6 is used to generate at least one gas, which is at least one of oxygen or hydrogen, that is, the gas supply device 6 can supply oxygen, hydrogen or a mixed gas of the two. The gas supply device 6 is the same as various common medical gas supply devices (such as water electrolysis hydrogen production equipment, water electrolysis oxygen production equipment, etc.), and will not be described in detail here.

The wearable air supply assembly 8 includes: a body 81, an ear-hanging structure 82, an air supply arm 83, an air flow sensor 100 and a processing module 84. The body 81 includes, for example, a shell and other structures. The ear-hanging structure 82 is connected to the body 81, and the ear-hanging structure 82 is used to be hung on the ear of the user. The air supply arm 83 is connected to the body 81, and the air supply arm 83 has an air supply channel 831. In practice, the air supply arm 83 can be, for example, a hollow structure, and the air supply channel 831 is directly formed in the air supply arm 83, or a tube can be provided in the air supply arm 83, and the air supply channel 831 is formed by the tube.

The two ends of the air supply arm 83 are respectively a connection end 832 and an air supply end 833. The connection end 832 is connected to the air supply device 6 through the pipeline 7. The air supply end 833 is used to be arranged near the nostrils of the user. The air supply arm 83 has two air supply holes 834 at the air supply end 833. The gas provided by the air supply device 6 can pass through the pipeline 7 and the air supply channel 831 and be discharged from the two air supply holes 834. The setting position, arrangement, size and number of the air supply holes 834 are not limited to those shown in the figure.

In actual application, the air supply arm 83 can be made of a plastic material, for example, and the user can bend the air supply arm 83 according to actual needs so that the air supply end 833 is disposed close to the user's nostrils.

The air flow sensor 100 is disposed on the air supply arm 83, and the air flow sensor 100 is adjacent to the air supply end 833. The air flow sensor 100 can sense whether the user's nostrils are exhaling, and generate a corresponding air flow direction signal accordingly.

The processing module 84 is disposed in the body 81, and the processing module 84 is electrically connected to the air flow sensor 100. In practical applications, the air flow sensor 100 can be electrically connected to the processing module 84 disposed in the body 81 through a line or wire buried in the air supply arm 83. The processing module 84 includes, for example, a microprocessor, a circuit board, a power switch button, etc. In practical applications, the body 81 can include, for example, components such as a power switch.

The electronic gas valve 85 is electrically connected to the processing module 84. The electronic gas valve 85 is disposed on the gas flow path connecting the gas supply arm 83 and the gas supply device 6. For example, the electronic gas valve 85 can be disposed in the body 81, and the electronic gas valve 85 is located between the gas supply channel 831 and the pipeline 7. The processing module 84 can control the electronic gas valve 85 to open or close, so that the gas provided by the gas supply device 6 through the pipeline 7 can enter or not enter the gas supply channel 831, thereby allowing the gas supply hole 834 to discharge or not discharge gas accordingly. In an embodiment in which the electronic gas valve 85 can adjust the size of the passing airflow, the main body 81, for example, can also include a knob or a button for the user to operate. The user can control the electronic gas valve 85 through the processing module 84 by operating the knob or button to adjust the amount of air discharged from the air supply hole 834.

When the processing module 84 determines that the user's nostrils are exhaling according to the airflow direction signal, the processing module 84 will control the electronic gas valve 85 to stop the air supply end 833 from supplying air. Conversely, when the processing module 84 determines that the user's nostrils are inhaling according to the airflow direction signal, the processing module 84 will control the electronic gas valve 85 to enable the air supply end 833 to supply air.

As described above, the gas supply system 600 of the present invention can provide users with a relatively good user experience through the design of the above-mentioned air flow sensor 100 and the wearable gas supply assembly 8. More specifically, the wearable gas supply assembly 8 of the present invention can be worn on the head by the user with one hand, simply and easily through the design of the ear hanging structure 82. In contrast, the user basically needs to use both hands to wear the conventional gas supply mask (such as an oxygen mask), and after the user wears the oxygen mask for a long time, pressure marks are easily formed on the user's face, which causes many inconveniences to the user.

In addition, the wearable air supply assembly 8 of the present invention can prevent the user from being supplied with air during the exhalation process through the design of the air flow sensor 100, the processing module 84 and the electronic air valve 85, so that the user can breathe better. In contrast, the conventional air supply mask will only continuously supply oxygen regardless of whether the user is exhaling or not, which may cause the user to have difficulty breathing.

In addition, the conventional air supply mask continuously supplies gas, so when the user exhales, most of the gas provided by the air supply mask will be wasted; in other words, in long-term use, a certain portion of the gas provided by the air supply device of the conventional air supply mask will be wasted. In contrast, the gas supply system 600 of the present invention stops supplying gas when the user exhales, so in long-term use, the present invention can effectively save the cost of gas generation compared to the conventional air supply mask.

It should be noted that, in actual application, the wearable air supply assembly 8 can also be manufactured or sold independently, and the wearable air supply assembly 8 can also be connected to various existing air supply devices through pipelines. In other words, the wearable air supply assembly 8 is not limited to being manufactured or sold together with the air supply device 6 and the pipeline 7.

Please refer to FIG. 4 and FIG. 5 together. FIG. 4 is a schematic diagram of the first embodiment of the air flow sensor of the wearable air supply assembly of the present invention, and FIG. 5 is a schematic cross-sectional diagram of the air flow sensor of the wearable air supply assembly of the present invention along the section line V-V of FIG. 4. The air flow sensor 100 includes: a substrate 1, a heating circuit 2, four sensing circuits and a control module 4. The substrate 1 can be, for example, a hard circuit board or a flexible circuit board. In the embodiment in which the substrate 1 is a flexible circuit board, the air flow sensor 100 can be used with adhesive, double-sided tape, etc., as a component attached to the surface of a device, a robot arm, etc., thereby monitoring the air flow outside the device, the robot arm, etc. In one practical application, the substrate 1 may be connected to a flexible cable, and the control module 4 may transmit the relevant sensing results in the form of signals through the flexible cable.

The heating circuit 2 can be powered to form a heating resistor and generate heat energy accordingly. In practical applications, the heating circuit 2 can include, for example, a plurality of arc sections 31 and a plurality of bend sections 32, at least one end of each arc section 31 is connected to one of the bend sections 32, and the periphery of the heating circuit 2 can be roughly circular (or elliptical). The shape, size, wire diameter, etc. of the heating circuit 2 can be changed according to actual needs, and the figure shows only one exemplary state.

In one specific application, the line width of the heating circuit 2 is the same at any position, so that when the heating circuit 2 is energized to generate heat energy, the temperature at any position of the heating circuit 2 will be substantially the same. By making the line width of the heating circuit 2 the same at any position, the air flow sensor 100 can also make the resistance value change of each sensing circuit due to the heat energy generated by the heating circuit 2 substantially the same when the external air flow is not flowing.

Four sensing circuits are formed on one side of the substrate 1. Each sensing circuit can be powered to form a thermistor. The four sensing circuits are arranged around the heating circuit 2. The four sensing circuits are connected to form a Wheatstone Bridge.

For the sake of explanation, the four sensing circuits located at the upper left corner, the upper right corner, the lower left corner and the lower right corner in FIG. 4 are defined as the first sensing circuit 3A, the second sensing circuit 3B, the third sensing circuit 3C and the fourth sensing circuit 3D in sequence. The first sensing circuit 3A and the second sensing circuit 3B are arranged symmetrically, the third sensing circuit 3C and the fourth sensing circuit 3D are also arranged symmetrically, the first sensing circuit 3A and the third sensing circuit 3C are arranged symmetrically, and the second sensing circuit 3B and the fourth sensing circuit 3D are arranged symmetrically.

The line width of each sensing line gradually increases from the end close to the heating line 2 to the end far from the heating line 2. In one specific application, the minimum line width D1 of each sensing line is at least 5% of the maximum line width D2 of each sensing line. Since the overall shape of the sensing line is generally formed by extending outward from the end close to the heating line 2, when there is no airflow in the environment where the air flow sensor 100 is located, the section of the sensing line close to the heating line 2 is significantly affected by the heat energy of the heating line 2 than the section of the sensing line far from the heating line 2. Therefore, the section of the sensing line closest to the heating line 2 and the section of the sensing line farthest from the heating line 2 have a relatively large temperature difference. When there is a relatively large temperature difference between the section of the sensing circuit closest to the heating circuit 2 and the section of the sensing circuit farthest from the heating circuit 2, when the external airflow of the airflow sensor 100 flows slightly, the overall temperature of the sensing circuit will be relatively unlikely to change, and the resistance value of the airflow sensor 100 will be insensitive to changes.

In contrast, the line width of each sensing circuit of the air flow sensor 100 of the present invention gradually increases from the end close to the heating circuit 2 to the end farthest from the heating circuit 2. Therefore, when there is no airflow in the environment of the air flow sensor 100 of the present invention, the temperature difference between the section of each sensing circuit closest to the heating circuit 2 and the section farthest from the heating circuit 2 will not be too large. Therefore, when the external airflow of the air flow sensor 100 flows slightly, the overall temperature of the sensing circuit will change relatively quickly, and the resistance value of the air flow sensor 100 will change sensitively accordingly. That is, the air flow sensor 100 of the present invention can effectively improve the sensing sensitivity of the air flow sensor 100 by changing the line width of the sensing circuit.

In practical applications, each sensing circuit may include, for example, a plurality of arc sections 31 and a plurality of bend sections 32, and at least one end of each arc section 31 is connected to one of the bend sections 32. The closer each sensing circuit is to the heating circuit 2, the shorter the length of the arc section 31 is, and the farther each sensing circuit is from the heating circuit 2, the longer the length of the arc section 31 is. In practical applications, the curvature and size of the arc section 31 of each sensing circuit can be changed according to actual needs, and the figure shows only one exemplary state. Through the above-mentioned design of changing the length of the arc section 31 of each sensing circuit, the sensing sensitivity of the air flow sensor 100 can also be further improved.

In one preferred specific application, the material of each sensing line can be gold foil, so that the resistance value change of the sensing line can be more sensitive.

The control module 4 is electrically connected to the heating circuit 2 and the four sensing circuits, and the control module 4 can output an airflow direction signal according to the change in the resistance value of each sensing circuit. In practical applications, the control module 4 may include, for example, a microprocessor, a signal conversion circuit, a communication chip, etc., and after the microprocessor generates a corresponding airflow direction signal according to the change in the resistance value of the four sensing circuits, the microprocessor may, for example, transmit the airflow direction signal to the outside through the communication chip. Of course, in different embodiments, the microprocessor may also transmit the airflow direction signal to the outside through components such as related wiring, wires, etc. connected to the substrate 1. The components included in the control module 4 and the technology of converting the resistance value change into an analog signal based on the Wheatstone bridge are all known technologies and will not be elaborated here.

The control module 4 can determine the flow direction of the airflow by measuring the change in the resistance value of the four sensing circuits, and the design of the four sensing circuits allows the airflow sensor to detect airflow in various directions. More specifically, when the external airflow of the airflow sensor 100 is not flowing, the control module 4 will measure that the four sensing circuits have approximately the same resistance value. When the external airflow of the airflow sensor 100 begins to flow, the heat energy generated by the heating circuit 2 will flow along with the airflow to the direction of at least one of the sensing circuits, thus causing the overall temperature of the sensing circuit to rise, and the resistance value of the sensing circuit will change accordingly, thereby allowing the control module 4 to know that the airflow is flowing in the direction of the sensing circuit.

As shown in FIG5 , in actual application, the air flow sensor 100 may further include an insulating protective layer 5. The insulating protective layer 5 is disposed on the side of the substrate 1 where the sensing circuit and the heating circuit 2 are formed, and the insulating protective layer 5 covers the sensing circuit and the heating circuit 2. The insulating protective layer 5 is used to protect the sensing circuit and the heating circuit 2, so as to greatly reduce the problem of the sensing circuit or the heating circuit 2 being peeled off from the substrate 1 due to external force, thereby further improving the service life of the air flow sensor 100. Preferably, the thickness of the insulating protective layer 5 is not greater than 0.0008 mm, thereby preventing the insulating protective layer 5 from blocking the airflow-driven heat transfer. In practical applications, the insulating protective layer 5 can be, for example, PI 9320 material.

Please refer to FIG. 6 , which is a schematic diagram of the second embodiment of the air flow sensor of the wearable air supply assembly of the present invention. One of the differences between this embodiment and the aforementioned embodiment is that each sensing line includes a plurality of straight line segments 33, and the closer the sensing line is to the heating line 2, the shorter the length of the straight line segment 33 is, and the farther the sensing line is from the heating line 2, the longer the length of the straight line segment 33 is. The closer the sensing line is to the heating line 2, the smaller the line width is, and the farther the straight line segment 33 is from the heating line 2, the larger the line width is. In one specific application, the minimum line width D3 of each sensing line is at least 5% of the maximum line width D4 of each sensing line.

Another difference between this embodiment and the aforementioned embodiment is that the heating circuit 2 includes a heating section 21 and two connecting sections 22, the two ends of the heating section 21 are connected to the two connecting sections 22, one of the connecting sections 22 is located between the first sensing circuit 3A and the third sensing circuit 3C, and the other connecting section 22 is located between the second sensing circuit 3B and the fourth sensing circuit 3D, and the line width D5 of the heating circuit 2 at any position of the heating section 21 is different from the line width D6 at any position of each connecting section 22. In one specific application, the line width D5 at any position of the heating section 21 is smaller than the line width D6 at any position of each connecting section 22.

As described above, by making the line width D5 at any position of the heating section 21 different from the line width D6 at any position of each connecting section 22, the impact of the heat energy generated by the connecting section 22 on the adjacent sensing circuit when the heating circuit 2 generates heat energy can be greatly reduced.

Furthermore, since there is no connection section 22 between the first sensing circuit 3A and the second sensing circuit 3B and between the third sensing circuit 3C and the fourth sensing circuit 3D, by making the line width of the connection section 22 larger than the line width of the heating section 21, the temperature of the connection section 22 can be greatly reduced, which affects the temperature of the surrounding sensing circuits, thereby further improving the sensing sensitivity of the sensing circuits.

It should be noted that the above description of the air flow sensor is only one exemplary embodiment of the air flow sensor of the present invention. In actual applications, any air flow sensor that can be installed on an air supply arm is within the applicable scope of the air flow sensor of the present invention.

The above description is only the preferred feasible embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all equivalent technical changes made by using the contents of the specification and drawings of the present invention are included in the protection scope of the present invention.

100: Air flow sensor 1: Substrate 2: Heating circuit 21: Heating section 22: Connecting section 3A: First sensing circuit 3B: Second sensing circuit 3C: Third sensing circuit 3D: Fourth sensing circuit 31: Arc section 32: Turning section 33: Straight section 4: Control module 5: Insulation protective layer 600: Gas supply system 6: Gas supply equipment 7: Pipeline 8: Wearable gas supply assembly 81: Body 82: Ear hook structure 83: Gas supply arm 831: Gas supply channel 832: Connecting end 833: Gas supply end 834: Gas supply hole 84: Processing module 85: Electronic gas valve D1: Line width D2: Line width D3: Line width D4: Line width D5: Line width D6: Line width

FIG1 is a schematic diagram of a gas supply system of the present invention.

FIG. 2 is a schematic diagram of the wearable air supply assembly of the present invention worn on the user's head.

FIG3 is a partial enlarged schematic diagram of FIG1 .

FIG. 4 is a schematic diagram of a first embodiment of the air flow sensor of the wearable air supply assembly of the present invention.

FIG5 is a schematic cross-sectional view of the air flow sensor of the wearable air supply assembly of the present invention along the section line V-V of FIG4.

FIG6 is a schematic diagram of a second embodiment of the air flow sensor of the wearable air supply assembly of the present invention.

100: Air flow detector

600: Gas supply system

6: Gas supply equipment

7: Pipeline

8: Wearable air supply assembly

81:Entity

82: Ear hook structure

83: Air supply arm

831: Air supply channel

832:Connection port

833: Air supply end

834: Air supply hole

84: Processing module

85: Electronic gas valve

Claims (10)

A gas supply system, comprising: an air supply device, which is used to generate at least one gas, wherein the gas is at least one of oxygen or hydrogen; a wearable air supply assembly, which comprises: a body; an ear-hanging structure, which is connected to the body, and the ear-hanging structure is used to hang on the ear of the user; an air supply arm, which is connected to the body, and the air supply arm has an air supply channel, and the two ends of the air supply arm are respectively a connecting end and an air supply end, and the connecting end is connected to the air supply device through a pipeline; the air supply end is used to be arranged near the nostrils of the user; an air flow sensor, which is arranged on the air supply arm, and the air flow sensor is adjacent to the air supply end, and the air flow sensor can sense the user's nostrils. whether the user's nostrils are exhaling, and accordingly generating a corresponding airflow direction signal; a processing module, which is arranged in the body, the processing module is electrically connected to the airflow sensor; an electronic gas valve, which is electrically connected to the processing module, the electronic gas valve is arranged on the gas flow path where the air supply arm and the air supply device are connected; wherein, when the processing module determines that the user's nostrils are exhaling according to the airflow direction signal, the processing module will control the electronic gas valve so that the air supply end does not supply air; wherein, when the processing module determines that the user's nostrils are inhaling according to the airflow direction signal, the processing module will control the electronic gas valve so that the air supply end supplies air. A gas supply system as described in claim 1, wherein the air flow sensor comprises: a substrate; a heating circuit that can be powered to form a heating resistor and generate heat energy; at least four sensing circuits formed on one side of the substrate, each of which can be powered to form a thermistor, the four sensing circuits are arranged around the heating circuit, and the four sensing circuits are connected to form a Wheatstone bridge; each of the sensing circuits The line width gradually increases from one end close to the heating line to one end far from the heating line; a control module is arranged on the substrate, and the control module is electrically connected to the heating line and the four sensing lines, and the control module can output the airflow direction signal according to the change of the resistance value of each sensing line; the control module is connected to the processing module, and the control module can transmit the airflow direction signal to the processing module. A gas supply system as described in claim 2, wherein the minimum line width of each of the sensing lines is at least 5% of the maximum line width of each of the sensing lines. A gas supply system as described in claim 2, wherein each of the sensing lines comprises a plurality of straight line segments, the closer each of the sensing lines is to the heating line, the shorter the length of the straight line segment is, and the farther each of the sensing lines is from the heating line, the longer the length of the straight line segment is. A gas supply system as described in claim 2, wherein each of the sensing lines comprises a plurality of arc sections and a plurality of bend sections, at least one end of each of the arc sections is connected to one of the bend sections; the closer each of the sensing lines is to the heating line, the shorter the length of the arc section, and the farther each of the sensing lines is from the heating line, the longer the length of the arc section; the heating line comprises a plurality of arc sections and a plurality of bend sections, at least one end of each of the arc sections is connected to one of the bend sections; the outer periphery of the heating line is substantially circular. A wearable air supply assembly comprises: a body; an ear-hanging structure connected to the body, the ear-hanging structure is used to hang on the ear of a user; an air supply arm connected to the body, the air supply arm has an air supply channel, the two ends of the air supply arm are respectively a connecting end and an air supply end, the connecting end is connected to an air supply device through a pipeline; the air supply end is used to be arranged near the nostrils of the user; an air flow sensor is arranged on the air supply arm, and the air flow sensor is near the air supply end, the air flow sensor can sense whether the user's nostrils are exhaling, and generate a corresponding air flow direction signal accordingly a processing module, which is arranged in the body, and the processing module is electrically connected to the air flow sensor; an electronic gas valve, which is electrically connected to the processing module, and the electronic gas valve is arranged on the gas flow path where the air supply arm is connected to the air supply device; wherein, when the processing module determines that the user's nostrils are exhaling according to the air flow direction signal, the processing module will control the electronic gas valve so that the air supply end does not supply air; wherein, when the processing module determines that the user's nostrils are inhaling according to the air flow direction signal, the processing module will control the electronic gas valve so that the air supply end supplies air. The wearable air supply assembly as claimed in claim 6, wherein the air flow sensor comprises: a substrate; a heating circuit which can be powered to form a heating resistor and generate heat energy; at least four sensing circuits formed on one side of the substrate, each of which can be powered to form a thermistor, the four sensing circuits are arranged around the heating circuit, and the four sensing circuits are connected to form a Wheatstone bridge; each of the sensing circuits The line width gradually increases from one end close to the heating line to the end far from the heating line; a control module is arranged on the substrate, and the control module is electrically connected to the heating line and the four sensing lines, and the control module can output the airflow direction signal according to the change of the resistance value of each sensing line; the control module is connected to the processing module, and the control module can transmit the airflow direction signal to the processing module. A wearable air supply assembly as described in claim 7, wherein the minimum line width of each of the sensing lines is at least 5% of the maximum line width of each of the sensing lines. A wearable air supply assembly as described in claim 7, wherein each of the sensing lines comprises a plurality of straight line segments, the closer each of the sensing lines is to the heating line, the shorter the length of the straight line segment is, and the farther each of the sensing lines is from the heating line, the longer the length of the straight line segment is. A wearable air supply assembly as described in claim 7, wherein each of the sensing circuits comprises a plurality of arc sections and a plurality of bend sections, and at least one end of each of the arc sections is connected to one of the bend sections; the closer the sensing circuit is to the heating circuit, the shorter the length of the arc section is, and the farther the sensing circuit is from the heating circuit, the longer the length of the arc section is; the heating circuit comprises a plurality of arc sections and a plurality of bend sections, and at least one end of each of the arc sections is connected to one of the bend sections; the outer periphery of the heating circuit is substantially circular.

Images