Face cleaning air layer creating system and method based on neck side air supply

Abstract

The invention belongs to the technical field of wearable ventilation, and discloses a face cleaning air layer creating system and method based on neck side air supply, and the system is characterized in that an information processing unit drives a negative-ion generator and a fan to work, the negative-ion generator purifies sucked air, and filter cotton is arranged in an air inlet; the dust and pollen in the air are adsorbed, the purified air is conveyed out through the air outlet grille through the fan, the information processing unit changes the deflection angle of the airflow, the inclination angle of the air outlet and the rotating speed of the fan according to the pollutant concentration collected by the second pollutant concentration sensor, and the airflow is conveyed to the mouth and nose of the human body. And a clean air layer is formed at the mouth, the nose and the surrounding face area. A clean thin air layer can be formed on the surface layer of the face of the human body, clean air is directly provided for the mouth and nose area, pollutant spreading is hindered, and the risk that the human body inhales pollutants is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of wearable ventilation, and relates to a facial clean air layer creation system and method based on neck side air supply. Background Art

[0002] In recent years, air pollution has become a major global health challenge, affecting the health of millions of people every day. In addition to air pollution, airborne diseases also pose another major health threat. In addition, allergic rhinitis caused by exposure to airborne allergens such as pollen, mold, and pet dander is also a key factor affecting people's quality of life. Personal respiratory protective equipment such as masks have excellent effects in reducing airborne diseases. They are designed to protect humans from inhalation and infection of harmful substances by filtering toxic particles, viruses, and bacteria discharged from the wearer's mouth and nose droplets. This is equivalent to establishing a physical barrier between the user and the contaminants in the breathing zone. However, the additional breathing resistance caused by wearing the device will cause great discomfort to the user, and this discomfort will increase over time. In addition, the discomfort caused by the wearing feeling may cause the user to fail to wear the mask correctly as designed, which will significantly affect the effectiveness of the mask, thereby further reducing the protective performance. In addition, the filters of current N95 or surgical masks have a serious problem of being susceptible to moisture. The filter will quickly lose its filtration efficiency in the humid air that humans breathe.

[0003] Ventilation plays an important role in reducing the impact of air pollution and preventing the spread of respiratory diseases. However, it is difficult to achieve a sufficiently low level of pollutant exposure by relying solely on traditional ventilation modes. Personalized ventilation has been used to create a clean microenvironment for people, but its defects are also obvious. Personalized ventilation is mainly suitable for places where the location of the objects is relatively fixed, such as offices. For places where the location changes frequently, the installation and adjustment of personalized ventilation systems may become complicated and impractical. In addition, the design and installation of personalized ventilation systems are relatively complex and require professional technicians to operate and maintain them, which increases the operating cost and maintenance difficulty of the system. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art that personalized ventilation is complex in design and installation, difficult to move with the ventilation object, and uncomfortable to wear contact devices such as existing masks, and to provide a facial clean air layer creation system and method based on neck side air supply.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A facial clean air layer creation system based on neck-side air supply includes: an air purification device, a power device, a neck hanging shell and a pollutant concentration sensor;

[0007] The air purification device and the power device are both arranged inside the neck hanging shell, the air purification device is connected to the power device, the air purification device is located at the air outlet, the pollutant concentration sensor is arranged at the air outlet, the pollutant concentration sensor is externally connected to the information processing unit, and the information processing unit is connected to the power device.

[0008] A further improvement of the present invention is:

[0009] Furthermore, the port of the air outlet is provided with an air outlet grille, which is an adjustable device. The air outlet grille plate is connected to a power device. Under the instruction of the information processing unit, the air outlet grille adjusts the opening angle of the air outlet grille through the power device; the air outlet grille is externally connected with an adjustment button; the adjustment button is used to manually adjust the air supply angle of the air outlet grille.

[0010] Furthermore, the information processing unit is externally connected to a temperature sensor, which is disposed inside the neck strap shell and close to human skin, and is used to collect the temperature of the human body and send it to the information processing unit.

[0011] Furthermore, the air purification device includes a fan and a negative ion generator; the fan and the negative ion generator are both connected to a power device and an information processing unit; the negative ion generator is arranged on one side of the fan, and the fan and the negative ion generator are both arranged at the air outlet; or the fan is connected to the air outlet through a ventilation duct, and the wind from the fan is discharged to the air outlet through the ventilation duct; the fan and the air outlet are externally connected to corresponding control buttons, and the control buttons are used to control the wind speed of the fan and the air outlet angle of the air outlet; the air outlet is arranged on one side of the end of the neck hanging shell, and an air inlet corresponding to the air outlet is arranged on the other side of the end of the neck hanging shell, and the fan is arranged between the air outlet and the air inlet; the air purification device also includes filter cotton; the filter cotton is arranged in the air inlet, and is used to absorb dust and pollen in the air.

[0012] Furthermore, there are two pollutant concentration sensors. The first pollutant concentration sensor is used to measure the concentration of the surrounding environment. When it is determined that the pollutant concentration transmitted by the first pollutant concentration sensor is greater than the set concentration threshold, if so, the power device drives the negative ion generator and the fan to work; the second pollutant concentration sensor is used to measure the concentration of the face and mouth and nose, evaluate the shielding performance of the neck side fan for pollutants, and then adjust the angle of the air outlet grille, change the air flow deflection angle, as well as the air outlet inclination angle and the fan speed.

[0013] The method for creating a clean air layer based on a neck side air supply device includes: starting a power device, a temperature sensor and a first pollutant concentration sensor sending collected data to an information processing unit; when the temperature information transmitted by the temperature sensor is greater than a set temperature threshold, or the pollutant concentration transmitted by the first pollutant concentration sensor is greater than a set concentration threshold, the information processing unit sends an instruction to the power device, the power device drives a negative ion generator and a fan to work, the negative ion generator purifies the inhaled air, and transmits the purified air through an air outlet grille through the fan, the second pollutant concentration sensor collects the pollutant concentration in the processed air supply, the information processing unit evaluates the shielding performance of the neck side fan for pollutants according to the pollutant concentration collected by the second pollutant concentration sensor, when the shielding performance index of the neck side fan for pollutants is greater than a preset threshold, the information processing unit changes the angle of the air outlet grille, the air flow deflection angle, the air outlet inclination angle of the air outlet and the speed of the fan through the power device, and forms a clean air layer at the mouth and nose and the surrounding facial area; until the shielding performance index of the neck side fan for pollutants is less than the preset threshold, the power device stops adjusting.

[0014] Furthermore, the pollutant concentration transmitted by the first pollutant concentration sensor includes: the pollutant concentration of the ambient air, the pollutant concentration of the inhaled gas, and the pollutant concentration of the treated supply air.

[0015] Furthermore, when the power device adjusts the angle of the air outlet grille, changes the air flow deflection angle, the air outlet inclination angle of the air outlet and the speed of the fan, if the user is not satisfied with the adjustment result, the user can manually adjust the air supply angle of the air outlet grille, control the wind speed of the fan and the air outlet angle of the air outlet through the adjustment knob and control button.

[0016] Furthermore, the air outlet has four inclination angles of 30°, 35°, 40° and 45° along the normal direction of the air supply air flow, i.e., the air outlet inclination angle; the air flow deflection angle is changed to have four inclination angles towards the neck of 0°, 15°, 30° and 45°.

[0017] Furthermore, the shielding performance of the fan on the side of the neck against pollutants is evaluated, specifically: the pollutant concentration of the ambient air, the pollutant concentration of the gas inhaled by the human body and the pollutant concentration in the treated air supply are collected, and the shielding performance of the fan on the side of the neck against pollutants is evaluated, specifically:

[0018]

[0019] Among them, C E is the pollutant concentration in the ambient air, C I is the pollutant concentration of the inhaled gas, C P It is the pollutant concentration in the treated supply air.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention drives a negative ion generator and a fan to work through an information processing unit, the negative ion generator purifies the inhaled air, and the fan delivers the purified air through an air outlet grille, and the information processing unit changes the airflow deflection angle, the air outlet inclination angle of the air outlet and the speed of the fan according to the pollutant concentration collected by the second pollutant concentration sensor, delivers the airflow to the mouth and nose of the human body, and forms a clean air layer at the mouth and nose and the surrounding facial area. The present invention can form a thin layer of clean air on the surface of the human face, directly provide clean air to the mouth and nose area, and hinder the spread of pollutants, reducing the risk of pollutants inhaled by the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a structural schematic diagram of the facial clean air layer creation system based on neck side air supply of the present invention;

[0024] Figure 2 This is a schematic diagram of the adjustable direction of air supply to the side of the neck.

[0025] Among them, 1-fan; 2-power device; 3-information processing unit; 4-first pollutant concentration sensor; 5-temperature sensor; 6-negative ion generator; 7-air outlet grille; 8-second pollutant concentration sensor. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0033] See also Figure 1 , the present invention discloses a facial clean air layer creation system based on neck side air supply, comprising: an air purification device, a power device 2, a neck hanging shell and a pollutant concentration sensor 4;

[0034] The air purification device and the power device 2 are both arranged inside the neck hanging shell, the air purification device is connected to the power device 2, the air purification device is located at the air outlet, the pollutant concentration sensor is arranged at the air outlet, the pollutant concentration sensor is externally connected to the information processing unit 3, and the information processing unit 3 is connected to the power device 2.

[0035] The port of the air outlet is provided with an air outlet grille 7, which is an adjustable device. The air outlet grille 7 is connected to the power device 2. Under the instruction of the information processing unit 3, the air outlet grille 7 adjusts the opening angle of the air outlet grille 7 through the power device 2; the air outlet grille 7 is externally connected to an adjusting button; the adjusting button is used to manually adjust the air supply angle of the air outlet grille 7.

[0036] The information processing unit 3 is externally connected to a temperature sensor 5 . The temperature sensor 5 is arranged inside the neck strap shell and close to the human skin. The temperature sensor 5 is used to collect the temperature of the human body and send it to the information processing unit 3 .

[0037] The air purification device includes a fan 1 and a negative ion generator 6; the fan 1 and the negative ion generator 6 are both connected to the power device 2 and the information processing unit 3; the negative ion generator 6 is arranged on one side of the fan 1, and the fan 1 and the negative ion generator 6 are both arranged at the air outlet; or the fan 1 is connected to the air outlet through a ventilation duct, and the wind of the fan 1 is discharged to the air outlet through the ventilation duct; the fan 1 and the air outlet are externally connected to corresponding control buttons, and the control buttons are used to control the wind speed of the fan 1 and the air outlet angle of the air outlet; the air outlet is arranged on one side of the end of the neck hanging shell, and an air inlet corresponding to the air outlet is arranged on the other side of the end of the neck hanging shell, and the fan 1 is arranged between the air outlet and the air inlet; the air purification device also includes filter cotton; the filter cotton is arranged in the air inlet, and is used to absorb dust and pollen in the air.

[0038] There are two pollutant concentration sensors. The first pollutant concentration sensor 4 is used to measure the concentration of the surrounding environment. When it is determined that the pollutant concentration transmitted by the first pollutant concentration sensor 4 is greater than the set concentration threshold, if so, the power device 2 drives the negative ion generator 6 and the fan 1 to work; the second pollutant concentration sensor 8 is used to measure the concentration of the face and mouth and nose, evaluate the shielding performance of the neck side fan for pollutants, and then adjust the angle of the air outlet grille 7, change the air flow deflection angle, the air outlet inclination angle of the air outlet and the speed of the fan 1.

[0039] The method for creating a clean air layer based on the neck side air supply device includes: starting the power device 2, the temperature sensor 5 and the first pollutant concentration sensor 4 send the collected data to the information processing unit 3; when the temperature information transmitted by the temperature sensor 5 is greater than the set temperature threshold, or the pollutant concentration transmitted by the first pollutant concentration sensor 4 is greater than the set concentration threshold, the information processing unit 3 sends a command to the power device 2, the power device 2 drives the negative ion generator 6 and the fan 1 to work, the negative ion generator 6 purifies the inhaled air, and the fan 1 transmits the purified air through the air outlet grille 7. The second pollutant concentration sensor 8 collects the pollutant concentration in the processed supply air, and the information processing unit 3 evaluates the shielding performance of the neck side fan against pollutants based on the pollutant concentration collected by the second pollutant concentration sensor 8. When the shielding performance index of the neck side fan against pollutants is greater than the preset threshold, the information processing unit 3 changes the angle of the air outlet grille 7 through the power device 2, changes the air flow deflection angle, the air outlet inclination angle of the air outlet and the rotation speed of the fan 1, and forms a clean air layer at the mouth and nose and the surrounding facial area; until the shielding performance index of the neck side fan against pollutants is less than the preset threshold, the power device 2 stops adjusting.

[0040] The aerodynamic principle used in the formation of the clean air layer is: after the air supply jet is blown out through the air outlet, it will continuously draw in the static air in the surrounding environment under the action of air viscosity, and the static air will be replenished into the jet body. When the air flow is attached to the neck and face, there is less air available for replenishment on the side close to the neck, while the outside of the opposite face is not affected, so the pressure of the air supply jet close to the neck will decrease. The pressure difference between the inside and the outside will press the air supply jet against the neck and face, thereby forming a thin layer of air attached to the face. This phenomenon of air flow deflecting when attached to the wall is also called the Coanda effect.

[0041] The pollutant concentration transmitted by the first pollutant concentration sensor 4 includes: the pollutant concentration of the ambient air, the pollutant concentration of the inhaled gas and the pollutant concentration of the treated supply air.

[0042] When the power device 2 adjusts the angle of the air outlet grille 7, changes the air flow deflection angle, the air outlet inclination angle of the air outlet and the rotation speed of the fan 1, if the user is not satisfied with the adjustment result, the user can manually adjust the air supply angle of the air outlet grille 7, control the wind speed of the fan 1 and the air outlet angle of the air outlet through the adjustment knob and control button.

[0043] In the present invention, the air outlet has four inclination angles along the normal direction of the air supply airflow, namely, the air outlet inclination angle (PitchAngle), of 30°, 35°, 40° and 45°, and the air supply airflow has four inclination angles toward the neck, namely, the airflow deflection angle (RollAngle), of 0°, 15°, 30° and 45°. Figure 2In an ideal state, the airflow from the air outlets on both sides will move diagonally upward along the neck, and deflect toward the face under the action of the Coanda effect, forming a clean area in front of the mouth and nose.

[0044] Evaluate the shielding performance of the fan on the side of the neck against pollutants, specifically: collect the pollutant concentration of the ambient air, the pollutant concentration of the gas inhaled by the human body and the pollutant concentration in the treated air supply, and evaluate the shielding performance of the fan on the side of the neck against pollutants, specifically:

[0045]

[0046] Among them, C E is the pollutant concentration in the ambient air, C I is the pollutant concentration of the inhaled gas, C P It is the pollutant concentration in the treated supply air.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A facial clean air layer creation system based on neck side air supply, characterized in that: include: An air purification device, a power device (2), a neck-hanging housing and a pollutant concentration sensor; The air purification device and the power device (2) are both arranged inside the neck hanging shell, the air purification device is connected to the power device (2), the air purification device is located at the air outlet, the pollutant concentration sensor is arranged at the air outlet, the pollutant concentration sensor is externally connected to an information processing unit (3), and the information processing unit (3) is connected to the power device (2).

2. The facial clean air layer creation system based on neck side air supply according to claim 1, characterized in that: The port of the air outlet is provided with an air outlet grille (7), the air outlet grille (7) is an adjustable device, the air outlet grille (7) plate is connected to a power device (2), and the air outlet grille (7) adjusts the opening angle of the air outlet grille (7) through the power device (2) under the instruction of the information processing unit (3); the air outlet grille (7) is externally connected with an adjustment button; the adjustment button is used to manually adjust the air supply angle of the air outlet grille (7).

3. The facial clean air layer creation system based on neck side air supply according to claim 2, characterized in that: The information processing unit (3) is externally connected to a temperature sensor (5), and the temperature sensor (5) is arranged inside the neck-hanging shell and close to the human skin, and is used to collect the temperature of the human body and send it to the information processing unit (3).

4. The facial clean air layer creation system based on neck side air supply according to claim 3 is characterized in that: The air purification device comprises a fan (1) and a negative ion generator (6); the fan (1) and the negative ion generator (6) are both connected to a power device (2) and an information processing unit (3); the negative ion generator (6) is arranged on one side of the fan (1), and the fan (1) and the negative ion generator (6) are both arranged at an air outlet; or the fan (1) is connected to the air outlet via a ventilation duct, and the wind of the fan (1) is discharged to the air outlet via the ventilation duct; the fan (1) and the air outlet are externally connected to corresponding control buttons, and the control buttons are used to control the wind speed of the fan (1) and the air outlet angle; the air outlet is arranged on one side of the end of the neck hanging shell, and the other side of the end of the neck hanging shell is provided with an air inlet corresponding to the air outlet, and the fan (1) is arranged between the air outlet and the air inlet; the air purification device also comprises filter cotton; the filter cotton is arranged in the air inlet, and is used to absorb dust and pollen in the air.

5. The facial clean air layer creation system based on neck side air supply according to claim 4, characterized in that: There are two pollutant concentration sensors, the first pollutant concentration sensor (4) is used to measure the concentration of the surrounding environment, and when it is determined that the pollutant concentration transmitted by the first pollutant concentration sensor (4) is greater than a set concentration threshold, if so, the power device (2) drives the negative ion generator (6) and the fan (1) to work; the second pollutant concentration sensor (8) is used to measure the concentration at the face and mouth and nose, evaluate the shielding performance of the fan on the side of the neck for pollutants, and then adjust the angle of the air outlet grille (7), change the air flow deflection angle, the air outlet inclination angle of the air outlet, and the rotation speed of the fan (1).

6. A method for creating a clean air layer based on a neck side air supply device, characterized in that: The facial clean air layer creation system based on neck side air supply as described in claim 5 comprises: turning on the power device (2), the temperature sensor (5) and the first pollutant concentration sensor (4) sending the collected data to the information processing unit (3); when the temperature information transmitted by the temperature sensor (5) is greater than the set temperature threshold, or the pollutant concentration transmitted by the first pollutant concentration sensor (4) is greater than the set concentration threshold, the information processing unit (3) sends a command to the power device (2), the power device (2) drives the negative ion generator (6) and the fan (1) to work, the negative ion generator (6) purifies the inhaled air, and transmits the purified air through the fan (1). The air is transported out through the air outlet grille (7), the second pollutant concentration sensor (8) collects the pollutant concentration in the processed air supply, the information processing unit (3) evaluates the shielding performance of the neck side fan against pollutants based on the pollutant concentration collected by the second pollutant concentration sensor (8), and when the shielding performance index of the neck side fan against pollutants is greater than a preset threshold, the information processing unit (3) changes the angle of the air outlet grille (7) through the power device (2), changes the air flow deflection angle, the air outlet inclination angle of the air outlet and the rotation speed of the fan (1), and forms a clean air layer at the mouth and nose and the surrounding facial area; until the shielding performance index of the neck side fan against pollutants is less than the preset threshold, the power device (2) stops adjusting.

7. The method for creating a clean air layer based on the neck side air supply device according to claim 6, characterized in that: The pollutant concentration transmitted by the first pollutant concentration sensor (4) includes: the pollutant concentration of the ambient air, the pollutant concentration of the inhaled gas and the pollutant concentration of the treated supply air.

8. The method for creating a clean air layer based on the neck side air supply device according to claim 7, characterized in that: When the power device (2) adjusts the angle of the air outlet grille (7), changes the air flow deflection angle, the air outlet inclination angle of the air outlet and the rotation speed of the fan (1), if the user is not satisfied with the adjustment result, the user can manually adjust the air supply angle of the air outlet grille (7), control the wind speed of the fan (1) and the air outlet angle of the air outlet through the adjustment knob and the control button.

9. The method for creating a clean air layer based on the neck side air supply device according to claim 8, characterized in that: The air outlet has four inclination angles along the normal direction of the air supply air flow, namely, the air outlet inclination angle, of 30°, 35°, 40° and 45°; the changed air flow deflection angle has four inclination angles toward the neck, of 0°, 15°, 30° and 45°.

10. The method for creating a clean air layer based on the neck side air supply device according to claim 9, characterized in that: The evaluation of the shielding performance of the neck fan against pollutants is specifically as follows: collecting the pollutant concentration of the ambient air, the pollutant concentration of the gas inhaled by the human body and the pollutant concentration in the treated air supply, and evaluating the shielding performance of the neck fan against pollutants is specifically as follows: Among them, C E is the pollutant concentration in the ambient air, C I is the pollutant concentration of the inhaled gas, C P It is the pollutant concentration in the treated supply air.

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